Bad Purge Valve Bad Gas Mileage

Can a bad vent solenoid cause a five mpg drop and a miss only code is 466 - Answered by a verified Chevy Mechanic I changed the vent solenoid and the purge valve. That is what causes your engine to sound rough or perform unpredictably. What it looks for is the effect the valve should have on other sensors when it opens. When these camshaft actuators go bad, the engine will no longer be able to properly change the valve timing and there may be a noticeable loss of fuel economy and power. Bottom line: you could’ve went without if. I had to drive the vehicle like that on an unforeseen trip because I had no time to change the sensor. It is getting poor gas mileage. I ended up going to Autozone and they used their OBD Scanner and it said the cause for it to be on is the Purge Valve. Bad gas mileage: 5 to 8 mpg burns oil pretty good White smoke on cold start Blue smoke when shifting under load Strong smell of fumes in cab Checked vacuum: 17hg (needle does not move) Compression Test: 120 122 110 112 125 130 (not the best) I believe the smoke on start-up and under load are signs that I need to replace the valve gaskets. Again the manufacturers in an effort to reduced costs per unit used some cheap plastic solenoids on the factory assembly line. Ding, Ding, Ding!! And you would be correct! I too remember reading that the reddish powder in the dist cap meant the bearings were toasted or something. i installed a new air and gas filter. So for months now, I've had a bad EVAP purge valve and I finally ordered one and replaced it on the weekend. 3mpg) I live in vt and the car doesnt idle in the morning before i leave. I had a vacuum leak on my 98 on the front differential. But if these emissions were to get released into the environment, it will decrease your fuel economy. DTC P0446 is defined as “Evaporative Emission (EVAP) Vent Control Circuit Malfunction. the only other problem i really had was the evap purge valve, which i. Have you ever found any fluid on the ground? The way this works is the fuel vapor from the fuel tank goes into the canister where the purge valve pulls it into the engine to improve fuel mileage and reduce emissions. VW has had a. theres no exhause gas line here. Bad Vapor Canister Purge Valve Symptoms. Just as an FYI, the part you replaced is referred to as the solenoid purge valve. Bad gas mileage doesn't necessarily mean there's something wrong with the engine, it could also be based. This is a definite indication that this engine is burning oil. Bad Fuel Economy - When the carbon emissions renter the combustion chamber and get burned, this promotes a healthy fuel economy. maybe a bad coil on the dizzyprobe dizzy's are known to be bada misfire is a lag in spark getting to the cylinderso it could be that, or bad wires I obviously cannot rule it out for sure, but the distributor was replaced about 1. Replace Spark PlugsThe National Institute for Automotive Service Excellence indicates that bad spark plugs. Since the fix, my mpg has improved by 2 to 3 mpg over normal (not the artificially low numbers I was getting recently) which I attribute to the Michelin Energy Savers that I installed immediately after I experienced the mpg drop. Edit: Engine light turned off on it's own today as for the caved in part of the gas tank that too also went back down too. If it is found to be faulty, it should be either repaired or replaced immediately. stock my wildfire got 90 some mpg (i forget now) and a top speed of 45 on speedo last check speedo was still 2 off (radar sign) so 43, after hard break in. No, a leaky valve cover with not effect fuel mileage unless it gets so bad that it submerges the spark plug in oil and then there would be an obvious misfire that no one has mentioned so I doubt it. Instead of reaching the combustion chamber, gasoline gets burned up before it engages in the combustion process. Instead of reaching the combustion chamber, gasoline gets burned up before it engages in the combustion process. Richard, wouldn't the missing O2 sensor cause the computer to run in "limp home" mode? I ask this because my '93 Blazer Tahoe 4. The purpose of this blog is to inform you about "MPG" and what you can do to increase your gas mileage, save money and the environment. This system restricts the fuel vapours created in your fuel tank from escaping into the atmosphere by trapping them in a charcoal canister. Whats your MPG? There are two factors in which affect your mpg: car maintenance and driving behaviors. This past Summer of 2018 just bought a 2008 Subaru Forester automatic, 2. 5 Signs of a Bad Fuel Pressure Regulator. ummm you MIGHT wanna check your "check engine light" cord b/c my dad knows a guy who cut one one time b/c he couldnt figure out the problem. It's important to familiarize yourself with the warning signs of a faulty fuel pump—that way you can address any problems before it's too late. When that happens, a chemical reaction takes place between the nitrogen and oxygen, creating NOx, or Nitrous Oxide, which is an indirect greenhouse gas. Bad gas cap or Purge Solenoid? now with the new Purge Valve in, so far, I haven't had the gas cap message pop up in the DIC. Subject: new pcv=bad gas mileage IP: Logged Message: i put a new pcv valve in my 98 3. If your canister purge valve is stuck open it creates a vacuum leak. Does an Evap Leak cause BETTER gas mileage? I Replaced the purge solenoid valve (psv) and cleared the CEL. today i'm gonna get a new PCV valve and get back to. I'm getting about 13 mpg on the highway! The mpg in my old 97 was close to 20. AFR is bouncy. It may seem counter-intuitive when you’re trying to save money on fuel, but choosing a higher grade of fuel can ultimately make for fuel savings. 92 foxbody gt running rich all the time. I have a 2001 2500 with the 5. It's a 2009 model, no graphics, looks nice. Bad gas mileage: 5 to 8 mpg burns oil pretty good White smoke on cold start Blue smoke when shifting under load Strong smell of fumes in cab Checked vacuum: 17hg (needle does not move) Compression Test: 120 122 110 112 125 130 (not the best) I believe the smoke on start-up and under load are signs that I need to replace the valve gaskets. Purge valve (solenoid): how it works, symptoms, problems, testing Check Engine light: what to check, common problems, repair options OBD Code P0446 Evap System Vent Control Circuit Malfunction OBD Code P0441 Evaporative Emission Control System Incorrect Purge Flow Code P0455 Evaporative Emission Control System Leak Detected (gross or large leak). After reading up in the FSM, I tested the valve, and found that it was bad (the FSM says you can simply attempt to blow through it with it disconnected, if you can blow through it the valve is bad as it should be closed with no power attached). Back in the day when this bad Boss 429 was roaming the streets, some of the gas saving tips held true, but not anymore. well i had a bad egr too and had horrible gas mileage not sure if its a coincedense<--? or not i also had a 3' exhaust make sure that its put on fully cuz i had it a little loose and wow that got annoying real fast hahaha but yeah sorry if im not th at much help hahaha. It contains Polyetheramine (PEA), which is the strongest type of detergent found in the leading brands of fuel injector cleaners. If it gets stuck open, you have purge flow and it wouldn't affect the mileage as much but. For those who don't know, the EGR, Exhaust Gas Recirculation, system takes some of the exhaust gas and reintroduces it into the intake manifold. Read our funny complaints to see people who found humor in a bad situation. Active Shutter Grille Vents: How They Help Improve MPG Nikki Gordon-Bloomfield October 8, 2012 Comment Now! Over the past few years, more automakers than ever have started to promote something. Re: Evap purge valve and fuel odor Post by jreed » 17 Apr 2011, 12:06 Another potential leak point is the roll-over valve located under the fuel tank filler tube, next to the fuel filter (at least, that's where it's located on my '97 855 GLT). MK3 VR6 Bad Gas Mileage, PCV Valve? Results 1 to 6 of 6 Quick question, would a bad EVAP Purge Valve cause bad gas mileage? I believe mine is acting up, heard. 5-inch power valve, allowing the engine to get a healthy splash of fuel when engine load (vacuum) dictated it. About 3 months ago the fuel economy started to go down and LARGE clouds of black smoke would come out my exhaust under hard acceleration. The rear O2 sensors do NOT affect gas mileage. My HX has a Short Ram Intake and a Catback Exhaust, so I expect better than 45 mpg. I replaced all the vacuum hoses in the engine bay, even though none of them looked bad. shakes when in idle, codes P0443, P0403, P0135, what could possibly be wrong? 20 Answers. Subject: new pcv=bad gas mileage IP: Logged Message: i put a new pcv valve in my 98 3. The result of one may indicate the replacement of both to fix the problem. The purge valve controls the amount of fuel vapor being purged. Typically, the replacement cost for a bad purge valve ranges between $130 - $180, including labor charges, while the repair cost will vary depending upon the amount of work that needs to be done. In 2004 and prior years, the GM 4. My 1987 Bronco ll 4x4 is only getting about 8-10 miles to the gallon!I posted on the Bronco site where the average mileage acording to those owners is 18-26 mpg!You can literally watch it suck gas, ate up almost a quarter tank on a 30 mile trip to work tonight. Cars are meant to be driven, in my mind. 0 liter engine. Usually a bad or failing EVAP vent solenoid will produce a few symptoms that can alert the driver of a potential issue that should be serviced. I tried replace it with dorman rock auto parts, cheap enough to buy to replace a few more times but the codes would come back and so would the symptoms, which is a very unusual fuel trim. Generally on vehicles with over 100,000 miles on them the EGR may either have a clogged or hard to actuate valve that is filled with carbon deposits from years of hot carbon sooty exhaust gas contacting the valve. And that's a good thing. com (or Ford 4L or Ford 4. 2012 Hyundai Elantra Elantra GL 1. Charcoal Canister Replacement Cost. The gas cap is new, I jsut changed it, so I have only the purge valve left…. 60 percent city and 40 percent highway. After removing the throttle body on this truck, I noticed that the carbon build was bad right on the top of the intake manifold and by removing the body I was able to clean into the manifold a bit more. was created by bryanwarden Ok, long story short, I just bought my wife a 2005 buick rendezvous, inspected every square inch of this car and found nothing wrong with it, everythign ran great no cil codes or anything. Both will turn on the check engine light, and store a code. Modern vehicles eschew the diaphragm vacuum line and will instead have an electronically controlled valve (like a solenoid) placed inline between the purge port and the manifold. This may cause the "Check Engine" warning light to come on. rendezvous bad gas mileage, rough startup idle. Usually a bad or failing EVAP vent solenoid will produce a few symptoms that can alert the driver of a potential issue that should be serviced. For those who don't know, the EGR, Exhaust Gas Recirculation, system takes some of the exhaust gas and reintroduces it into the intake manifold. VALVE cap replaced in 2014 Purge Valve replaced 2015 Car turned. Hey guys, I just got my first CEL last week (during that cold spell) and the dealer said it was due to a bad purge valve. You're stepping on the gas pedal, but the vehicle isn't gaining speed as before? That could be a sign of a bad fuel pressure sensor. Code 33 MAP Sensor Signal High. I can feel the ECU pulling timing like crazy because it is sensing the noisy lifters as knock. Mine was stuck closed so I wasn't getting any purge flow. So, I ran a P0440 the other day, tested my purge valve and it seemed to not click every 30 seconds. On a lot of newer vehicles you can't adjust ignition timing (or idle speed, or nearly anything else) because it's all controlled by the computer. The vent control valve is usually open when the engine is at normal operating temperature, and the purge volume control valve is commanded on when the ECM is ready to burn the built-up fuel vapors. Poor gas mileage is another symptom of a failing canister purge valve. Hyundai Elantra Check Engine Light Due to Failing Canister Purge Valve - 105 reports. Check the air injection pump, belt and check valve. HW41 CHECK EVAP CANISTER PURGE VALVE CIRCUIT INTERMITTENT OPEN OR SHORT. I'm getting about 13 mpg on the highway! The mpg in my old 97 was close to 20. The purge valve has been diagnosed as bad, causing the engine to run lean. Improved gas mileage is good for you, good for your car and good for the environment. How the heck would you locate a blockage in a line that runs from the gas tank to the engine?? Furthermore, what would block a purge vapor line? The evap system should be clean. Toyota dealer trouble shooted it to a bad charcoal filter and possibly bad after market locking gas cap I put on several months ago. If the computer detects an issue with the EVAP vent solenoid signal. And no, a bad canister wont affect your mileage by any drastic means. You likely use it to get to and from work, to get the kids to school and any other errands you have each and every day. We're sure this How to Clean a Fuel System article will help you get your car back on track! the fuel is bad. Symptoms of a bad evap canister can alert any drivers that there is a potential problem occurs that needs to be addressed immediately. Or that valve might be bad, but not as likely as the hot, abused purge valve. If the computer detects an issue with the EVAP vent solenoid signal. I was told the 5. Here are 4 signs of a failing catalytic converter. It only has 101,000 on it. My HX has a Short Ram Intake and a Catback Exhaust, so I expect better than 45 mpg. The question then becomes how to get better gas mileage. A bent rim or severely unbalanced tire can cause axle-bearing failure. You need only modify the fuel sending unit of the vehicle. At the time I didn't know t. Does a PCV Valve affect fuel economy? I don't know if it's working well on my HX, and I want to get better than 41. Gas Mileage Tips; Driving More Efficiently We can help you calculate and track your fuel economy. Bad fuel milage after egr delete and more. Sometimes the EGR valve will throw an engine code if it is really bad. Bad Vapor Canister Purge Valve Symptoms. I love the truck - but I'm getting terrible gas mileage. The only place visible smoke is coming from is from the fuel filler neck (place where fuel or gas is put into the car) when the gas cap is off. Low Fuel Economy. I have ran through a couple bottles of iso-heat and it went up another. which has a purge valve on it. Can a bad vent solenoid cause a five mpg drop and a miss only code is 466 - Answered by a verified Chevy Mechanic I changed the vent solenoid and the purge valve. The charcoal canister contributes to promoting a healthy. 2) Clogged gas tank vent, or fuel venting system. The check gas cap light comes on because the computer senses a leak,but cannot determine what it is. Gas Mileage Tips; Driving More Efficiently We can help you calculate and track your fuel economy. I have had my Canister replaced 3 times over the last 30 Days. any ideas on what is going on?!. Purge Flow Fault. The reason for this is that the vapours that your car regularly uses in combustion will find the EVAP canister and eventually be vented to the environment, meaning that you will lose a portion of the fuel regularly used in burning. Manifold vacuum was around 17" Hg, which is acceptable. ð•Check to see if you can light it manually. There only function is to monitor cat performance. When the engine is cruising and vacuum is high, airflow through the PCV valve is at a maximum to purge the blowby vapors from the crankcase. From my experience of Taps coming from one side of the engine. I have put shorty headers on, K&N intake, flowmaster, and an MSD ignition coil. An engine with bad rings will also show signs of power loss, especially when going up hills. Here’s how to test a purge valve (YouTube). The symptoms of a bad EGR valve will leave your engine running badly or maybe not at all. Major improvement in gas mileage accomplished by 5 minute procedure - 2004 sienna In recent years, I noticed that the highway mileage on my 2004 Sienna dropped significantly from 24 to 25 miles per gallon down to 21 to 22 miles per gallon. Welcome to Ford40. Mine was stuck closed so I wasn't getting any purge flow. I've posted before about my rough low idle and declining gas mileage, but now I'm noticing a raw gas smell in the cabin while driving. Just to be safe please note the potential dangers of venting vapor from your gas cap. Open the gas line and bleed it (p ressing control knob in) for not more than 1 - 2 minutes or until you smell gas. Hi, and thank you to everyone reading this post. Generally on vehicles with over 100,000 miles on them the EGR may either have a clogged or hard to actuate valve that is filled with carbon deposits from years of hot carbon sooty exhaust gas contacting the valve. This can only be done when the vent valve and purge valve are opened simultaneously. Here are some of the most common. I keep track of miles, quantity, total ODO reading, what station, brand, location, etc and it figures the cost per mile also. what does this fix. having a bad pcv valve wont lower your gas mileage, at least, not enough to notice. I have started my process of getting all my documentation together and I have sent notice to the Dealer I am pursuing this directly with FORD and my State 3-time lemon law. "My gas mileage has increased nearly 1 mpg on my annual trip from Michigan to Alabama, from 16. Here's the thing: I'm returning the car next month (lease is up) and really don't want to spend the money to repair it. 3 Signs Of A Failing Canister Purge Valve The canister purge valve, also commonly referred to as the purge valve, is an important component of your Evaporative Emission Control (EVAP) system. P0455 KIA Meaning This diagnosis detects leaks in the Evaporative Emission System (EVAP) purge line using engine intake manifold vacuum. This system restricts the fuel vapours created in your fuel tank from escaping into the atmosphere by trapping them in a charcoal canister. If pressure does not increase, the Engine Control Module (ECM) will check for leaks in the line between the fuel tank and EVAP canister purge volume control solenoid valve under the following vacuum test condition. Does P0441 on my Dodge Ram 1500 Pickup mean that it has a bad Purge Valve. there are a lot of performance modifications that will increase your gas mileage. how much does a bad EGR valve affect MPG? decrease gas mileage 2-4 mpg, but the shitty idle or pinging will do more damage, best to get it taken care of. So putting Boltons helped w/my gas mileage. 4 got comparable mileage to the 4. The question then becomes how to get better gas mileage. BUT the lack of timing is really starting to put a damper on my fuel economy. The check engine code says an EGR valve but I also had a new engine put in recently. The IAC controls the rpm in your car by open or closing its valve, and it is controlled by the computer. Check Engine Light : Cadillac SRX 3. Low Fuel Economy. The most common problem with the purge valve is when it sticks or does not close fully. Purge valve (solenoid): how it works, symptoms, problems, testing Check Engine light: what to check, common problems, repair options OBD Code P0446 Evap System Vent Control Circuit Malfunction OBD Code P0441 Evaporative Emission Control System Incorrect Purge Flow Code P0455 Evaporative Emission Control System Leak Detected (gross or large leak). 2011 Chevy Equinox Engine Light Recall. stock my wildfire got 90 some mpg (i forget now) and a top speed of 45 on speedo last check speedo was still 2 off (radar sign) so 43, after hard break in. If your canister purge valve isn't opening correctly, it may adversely affect your gas mileage. The flow of the gas vapors from the charcoal canister to the engine air intake is controlled by a purge valve. View all 64 consumer vehicle reviews for the Used 2013 Chevrolet Cruze on Edmunds, or submit your own review of the 2013 Cruze. The only place visible smoke is coming from is from the fuel filler neck (place where fuel or gas is put into the car) when the gas cap is off. The most common problem with the purge valve is when it sticks or does not close fully. Anyways, I am sitting here just now and I thought, shouldn't have the ""check engine" light come on if the PCV valve was bad??? The PCV valve is part of the valve cover on this mini, so they have to replace the whole cover! Valve cover on internet is just about $400. Mine should be 192-199F. Why Is My Car Using So Much Gas? And the list of culprits behind a decrease in mileage can be rather large: A bad ECT sensor The purge valve controls the flow. The problem is that the brake hydraulic system will release most of the residual pressure so you can drive the car, but it retains a little residual pressure, just enough to make the brakes drag a bit. i have noticed that while in idle, i get a heavy odor of gas. Dragging Brakes, MASTER CYLINDER FAULT #1 - BT-101A There has been a recent run of a particular fault in a new replacement part master cylinder. 0-liter GDI and 2. The flip side of the second pro (higher resale value) is that it costs more -- sometimes a lot more -- to get into a low-mileage used car. Gas Mileage - Old School Meets New School With this in mind, we installed a 6. The vent control valve is normally opened when the engine is on, and the purge volume control valve is normally closed and is controlled by the ECM to open when it is ready to purge the stored fuel vapors from the charcoal canister. Improved gas mileage is good for you, good for your car and good for the environment. 27280 mi: Engine was bogging down and almost stalling on start up after the car was warmed and actually stalled while in stop and go traffic. Or that valve might be bad, but not as likely as the hot, abused purge valve. Bad gas mileage is caused by a number of different things. they generally don't stick completely open where it's a vacuum leak and you feel it. One part on your Ford Focus that does both jobs is your vapor canister purge solenoid. The EGR valve, or Exhaust Gas Recirculation valve, is a vacuum controlled valve which allows a specific amount of your exhaust back into the intake manifold. One of the worst auto repair night mares I ever personally experienced was once replacing a bad alternator. Also, I noticed that almost a quart of oil was used in my car in about 2000miles. A few months ago I notice a drop in gas mileage, down to 12. VALVE cap replaced in 2014 Purge Valve replaced 2015 Car turned. Sometimes the EGR valve will throw an engine code if it is really bad. When the vent valve and purge valve are closed, the evaporative canister will store vapors until the vents are opened. 11) I looked on the internet and found that a bad front o2 sensor could cause bad gas mileage, so I replaced it (myself) with a Bosch Direct OEM replacement model (not a genuine Honda). The attendants have a bad habit of trying to fill the tanks all the way to the top of the fill hose. The only way to fix it is to replace it. if it's on the back it isn't bad. Charcoal Canister Replacement Cost. Bad Fuel Pressure Regulator: Is Your Fuel Mileage Worse? According to eHow, the fuel system in a car is made up of several components and if any part of that system is flawed your car can run erratically, or it might not be able to run at all. Thus it is very important to check you PCV valve and replace it on a high mileage vehicle as it is often. The EVAP system is in constant communication with the engine control unit. Another cause of blue smoke is bad valve stem seals. Usually a bad or failing EVAP vent solenoid will produce a few symptoms that can alert the driver of a potential issue that should be serviced. A weak thermostat will impact fuel economy. But just wondering if anyone could tell me, is there any good points or bad points that I should know before I make my decision. Thinking it was just the gas cap. Yes, that is one of the very common symptoms when the purge valve goes bad. The vehicle is still shuddering at a stop light & lurching when accelerating and feels as though the tires are grabbing for traction. A malfunctioning charcoal canister purge valve might cause a rough idle and poor fuel economy, and will certainly cause your vehicle to fail an emissions inspection (if tested in your city). its evap major leak or some bs like that. The purpose of a charcoal canister is to capture evaporating fumes from your gas tank so that they can be used in the engine. Welcome To V6Mustang. so of course I'm thinking bad pump. The purge valve has been diagnosed as bad, causing the engine to run lean. how much does a bad EGR valve affect MPG? decrease gas mileage 2-4 mpg, but the shitty idle or pinging will do more damage, best to get it taken care of. 8T Common Troubleshooting Guide 3 of 6 5/14/06 1:12 PM Ignition Coils - These are famous parts for the 1. Does a PCV Valve affect fuel economy? I don't know if it's working well on my HX, and I want to get better than 41. Poor gas mileage is another symptom of a failing canister purge valve. A broken or disconnected purge solenoid is basically the same thing as leaving your gas cap loose which you can do as a replacement for a bad purge solenoid. sinc emy '95 does not have one (just the purge flow valve), I'm not sure how/where it sits. So putting Boltons helped w/my gas mileage. The purge valve is the "switch" that enables the fuel vapors to flow from the charcoal canister to the engine. The flow of the gas vapors from the charcoal canister to the engine air intake is controlled by a purge valve. any ideas on what is going on?!. Every part that the gas touched between the tank and the engine had to be flushed and cleaned as well, since bad fuel had been known to ruin higher-pressure fuel injectors. stock my wildfire got 90 some mpg (i forget now) and a top speed of 45 on speedo last check speedo was still 2 off (radar sign) so 43, after hard break in. -*** IMPORTANT NOTE: Many W-bodies are under a recall for this issue. Read consumer reviews from real 2019 Buick Encore buyers. Charcoal Canister Replacement Cost. The purge solenoid is basically the on/off switch for a fuel vapor recapture system. Some of the most effective emissions reduction equipment on automobiles today also helps improve gas mileage. Re: Evap purge valve and fuel odor Post by jreed » 17 Apr 2011, 12:06 Another potential leak point is the roll-over valve located under the fuel tank filler tube, next to the fuel filter (at least, that's where it's located on my '97 855 GLT). If it is found to be faulty, it should be either repaired or replaced immediately. That's fine but I replaced it any how. The rear O2 sensors do NOT affect gas mileage. Usually, a poor purge solenoid will display a few symptoms that may alert the driver a possible problem has occurred and has to be serviced. Vapor Canister Purge Valve- One of the most common causes of the P0456 code is the vapor canister purge valve. The scenner showed P0325 (knock sensor) and P1444 (EVAP purge control valve). But if better gas mileage is your primary aim, you'll be disappointed with the. Subject: new pcv=bad gas mileage IP: Logged Message: i put a new pcv valve in my 98 3. Contaminated. A car's purge valve is a mechanism that directs the vapors emitted by the engine fuel from the fuel tank to the intake manifold. 2) Clogged gas tank vent, or fuel venting system. 2012 Ford Focus code P144a changed purge valve but light is still on. It's a vacuum-controled diaphragm that is activated by engine vacuum. 3mpg) I live in vt and the car doesnt idle in the morning before i leave. The wrong PCV valve for an application can flow too much or too little air causing driveability problems. 8 L, Automatic 4-spd. Get up-to-date recall information for Toyota vehicles, including information on class action lawsuits, affected models, false advertisement, and more. Bad Spark Plug Wires. Inflated Pricing. If I clear the code it will stay off for 4-6 days and then come back on. Is there anyway the transmission can cause bad gas mileage? It's been ever so slowly leaking just a bit here and there but every time I check the dipstick, it's basically right where it should be. Does the egr valve affect your gas mileage? Answer. Does a PCV Valve affect fuel economy? I don't know if it's working well on my HX, and I want to get better than 41. Changed gas cap, no obvious loose ho. QUICK NOTE - Valve cover Replacement This is a common repair due to cracks in the composite valve covers and leaky gaskets. P0446 code means that the computer has detected a short in the vent control valve circuit. 2) Clogged gas tank vent, or fuel venting system. Baja_Chris, thanks for taking the time to post an informative guide on how to replace the faulty part. But if these emissions were to get released into the environment, it will decrease your fuel economy. I have only driven it 50 miles since I replaced it, but I still have the DTC, will I need to get the codes cleared or will it clear if the replacement part fixed the issue? Some other background info I am also getting bad gas mileage. The automaker says car equipped with 2. The ecu looks At several different evap references when determining malfunction. Having bad purge valve will not effect the ovrv valve on the tank, and that's what shuts off the fuel when refueling. Don't go too long without fixing your Vapor Canister Purge Solenoid Valve here's why. well, having the pcv valve changed is a good thing if it needed changing :) otherwise you could have started leaking oil. Poor Fuel Economy. If an EGR valve is stuck open, it can create a vacuum leak that leads to a rough idle and hesitation. When these camshaft actuators go bad, the engine will no longer be able to properly change the valve timing and there may be a noticeable loss of fuel economy and power. Common symptoms of a bad purge valve include: Check engine light Stored DTC code Difficulty starting (less common) The purge valve 258600H020 can be tested with a voltmeter for function. A properly working EVAP system traps the fuel vapors in the charcoal canister whenever the engine is off. 9 and noticed that in a 10 - 15 mile round trip i was using 1/8 tank of gas, thought this wasn't normal so put the old one back in after cleaning it out the best i could. Hi, I'm trying to put a long open-ended debate to rest. how much does a bad EGR valve affect MPG? decrease gas mileage 2-4 mpg, but the shitty idle or pinging will do more damage, best to get it taken care of. Remember, it's the distributor that decides exactly when each one of the spark plugs is to fire. 3mpg) I live in vt and the car doesnt idle in the morning before i leave. I'm getting about 13 mpg on the highway! The mpg in my old 97 was close to 20. Effects gas mileage. ummm you MIGHT wanna check your "check engine light" cord b/c my dad knows a guy who cut one one time b/c he couldnt figure out the problem. A bent rim or severely unbalanced tire can cause axle-bearing failure. It's really easy to replace. If you want to know how to improve fuel economy, aim for the obvious in your fuel consumption habits and be willing to try what you haven’t tried. Learn more about the 2016 Vehicle Health Index at AutoGuide. Usually the code is caused by the gas cap being left off or loose after a refuel. Since poor gas mileage wasn't a good match for my Wag's intended use, I began a witch hunt to find the source of my poor mileage. 27280 mi: Engine was bogging down and almost stalling on start up after the car was warmed and actually stalled while in stop and go traffic. Horrible gas mileage 9-10 mpg 4. Lower Gas Mileage If your canister purge valve is not opening properly, it may adversely impact your gas mileage. 3 months after i put the K-Pro my gas mileage went from 300 average to 240 average. I was told the O2 sensors and EGR valve are fine. Does anyone happen to have a picture of the EVAP Purge Flow Sensor on a '96 Cougar/T-Bird with a 4. The smoke is so bad I cannot tell what kind of car is beside me. poorly and get bad gas. The vacuum lines appear to be OK. The leak detection pump does exactly that, pumps air into the fuel tank and charcoal canister so that the ECM can measure the system's pressure decay. Toyota dealer trouble shooted it to a bad charcoal filter and possibly bad after market locking gas cap I put on several months ago. 2011 Chevy Equinox Engine Light Recall. The question then becomes how to get better gas mileage. Hey everyone. MY QUESTION , would that cause a little fuel on the plugs. 9L and i have the very same issues and i have replaced plugs, wires, cap, rotor, coil. Don't go too long without fixing your Vapor Canister Purge Solenoid Valve here's why. Here’s how to test a purge valve (YouTube). 3mpg) I live in vt and the car doesnt idle in the morning before i leave. 0l SOHC engine. Instead of getting to the combustion chamber, gasoline gets burned up before it engages in the combustion process. Most basic automotive systems can be pinpoint tested down to a faulty component in a matter of less than 20 minutes, regardless of the code. Bad gas mileage is caused by a number of different things. Throughout its run, the Saturn SL’s gas mileage ratings put it at top of the shortlist for many budget-minded families. Ive owned it since 2001 as the third owner. Nobody would love to come across such a snag, especially for those who have experienced the hefty repair charges from their local mechanics. Hey everyone. Your mileage may vary of course - maybe you will have just the "bad gas cap" problem! Let's hope. I have ran through a couple bottles of iso-heat and it went up another. Bad Fuel Economy - When the carbon emissions renter the combustion chamber and get burned, this promotes a healthy fuel economy. Inflated Pricing. Remember, it's the distributor that decides exactly when each one of the spark plugs is to fire. Help With Those Troublesome EGR Valve Codes! Today I'd like to throw some thoughts out on how to check a car's EGR Valve and related EGR system components for proper operation. Read our funny complaints to see people who found humor in a bad situation. My wife's 2006 EX Pilot 4WD has 120,000 miles and runs great overall. If the unit lights manually but not with igniter, service or replace the igniter switch. Gas Cap/Vapor Canister and Gas Mileage. Symptoms of a Bad or Failing EGR Control Solenoid.