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How does the car know the EGR valve is bad?

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2011-03-19 15:21:46
2011-03-19 15:21:46

If the egr valve was stuck open, the engine wouldn't idle. If the egr valve was stuck closed you may hear excessive pinging (spark knock) and in most vehicles, the check engine light would illuminate.

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Would this cause the car not to start If the EGR VALVE is bad

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AnswerThe 3800 (RPO: L27) was not equipped with an EGR Valve for the model year 1992 only. The 3800 (RPO:L67) does have an EGR valve.The valve should be located on the driver's side on top of the manifold.A bad EGR valve can keep your car from starting and running properly.

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The cost of replacing an EGR valve varies with the make, model and location of the car. An EGR valve for a 1996 Lincoln Town Car is about $160.

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It does not happen as often as you might think. But it does happen. Usually EGR valve goes out if you car is 10 years and older and you have way over 100K miles. Also if the valve is cleaned regularly it will work longer.

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Blocking off an EGR valve can make the car run rough. The fuel mileage can suffer as well, since the car is designed to have the EGR valve operable.

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if this is a v6, unless your car has California emissions, there is no EGR valve.

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It is a common suspect in contributing to rough idle. See "Related Questions" below for more about the EGR valve, from testing to replacing.

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Yes, if the valve is bad. With the car idling, move the EGR valve diaphragm with your fingers. The engine should quit or want to quit. If it doesn't do this, it could be plugged up. Remove the EGR valve and clean any carbon deposits in the valve and also do the same on the engine side where the EGR valve is connected. If the EGR has never been removed before, it will probably have carbon buildup.

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The location of the EGR valve on a 1987 to 1989 Chevy Celebrity depends on which engine the car has. If the car has the 2.8L V6 the EGR valve mounts to the plenum near the throttle body. If the car has the 2.5L 4 cylinder engine the EGR valve mounts in the center of the intake manifold near the valve cover.

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do you mean the EGR valve? The Exhaust Recirculation Valve? EGR

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I am not going to try to discourage you from doing your own repairs. What I hope to do is try to help you to save time and money. Has your car been in a repair shop and the EGR valve is guarenteed to fix your problem? I have had numerous occasions that a car was brought to me that Brand A auto parts got a code and said that it was the EGR valve. We scanned it and it was an EGR code and the valve was NOT bad. It was a 50 cent hose we replaced and NOT a $200.00 valve. It is to costly to assume.

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I dont know what other egr valve will work, but I know they can be cleaned out and put back on the car. I have a 96 Paseo, and I soaked mine in carb cleaner and was able to get all the carbon out and put it back on the car and works fine.

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A PVC valve is typically bad in a car if a car has an oil leak. Other signs of a bad valve include a collapsed hose and a sludge-like buildup.

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An EGR valve is round on the bottom. A metal L looking piece is located on the top. The EGR valve is important in keeping your car running more efficiently.

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EGR stands for exhaust gas recirculation and refers to the valve which acts as the main emissions control in a car. It helps the car burn fuel efficiently.

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If your car has the 2.5L engine. The EGR valve is located directly under the coolant fill cap & pipe. The EGR has a long metal tube that goes from the EGR valve to the upper intake plenum.

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Error code 32 for that car is EGR problem - during normal driving the car periodically runs an internal test of the EGR valve - it triggers the valve and watches for a change of exhaust stream composition, if the change does not happen, then the computer assumes the valve is bad and sets the code. If you get this code then if you are living in an area that does not do emissions testing you can ignore it. If you are living in an area that does do emissions testing then before replacing parts, take the car through emissions testing and see if it is really producing high NoX. If it is, the EGR valve is bad or the passages from the exhaust line that lead to the EGR valve are plugged. But sometimes the car ISN'T producing high NoX and the code gets set anyway. Legally, if your within emissions requirements then there's no reason to do anything about it. Note also that a standard tailpipe sniff at idle will not detect high NoX, only a dyno test will detect it. If your state's emissions testing has abandonded dyno testing, then even if your car has a bad EGR valve and is producing high NoX then it will not show up on an emissions test. Engine computers made after the late 1980's all test for proper EGR functioning so many states simply assume that if a bad EGR code is NOT set in the engine computer, that the car is producing acceptable NoX levels. The Chrysler engine computers of this vintage, in my experience, have a faulty algorithm for detecting a bad EGR valve. I have seen vehicles of this vintage that have a bad EGR valve and that fail emissions testing, that will not set a code. I've also seen vehicles that are producing acceptable NoX and that have a good EGR valve, that set this code intermittently.

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Possibly if it is leaking.

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Yes, the Diamante has an EGR solenoid. On any Mitsubishi, if the car has an egr valve, it has a solenoid to operate the valve. Just follow the vacuum line from the valve and it will go to the solenoid. There may be another one way valve between the valve and the solenoid, though. The solenoid is electronic.

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It can cause massive Engine failure and blow up the whole car, so be careful.

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Does a 2000 pontiac gran am 4 cyl. Have an egr valve all that parts stores have is a gasket. Gm says it does not have one. Car shakes and shimmies when you stop at an intersection which everyone says check the EGR valve

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It can if it sticks open at idle.

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No Egr (exhaust gas recirculation ) is to help better fuel economy

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Check the EGR valve. It sounds like your EGR valve is staying open. An EGR valve that is open at idle will cause a car to stall. An EGR should be closed at idle and open when you are driving around.

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A faulty or clogged egr valve can cause an engine to run rough. If stuck or clogged the valve can be cleaned after removal with carburetor cleaner.


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