The EGR valve is located in the engine compartment (underneath the hood) .
What happens when EGR valve goes bad?
A faulty EGR valve can cause problems with the flow and operation of the EGR system leading to performance issues including a reduction in power , reduced acceleration and decreased fuel efficiency. It can also cause vehicle emissions to increase.
What does an EGR valve do?
It connects the exhaust manifold to the intake manifold and is controlled by either a vacuum or a built-in electric step motor. The function of the EGR valve is to control the flow of exhaust gas being recirculated depending on the engine load .
What is a EGR solenoid valve?
The exhaust gas recirculation (EGR) solenoid is an electronic vacuum valve that distributes engine vacuum to the EGR valve when the computer commands it .
Where is the EGR valve located on a 2004 Buick Lesabre?
Open the hood of the LeSabre and locate the EGR valve. The small, circular EGR valve is found on the LeSabre’s engine intake manifold .
Can I drive with a bad EGR valve?
Can I drive with a bad EGR valve? Technically, you can drive your vehicle with a bad EGR valve , but your vehicle will run rough, shake at idle, and a check engine light will be illuminated. You might also hear popping sounds while driving down the road.
Can I disconnect my EGR valve?
If you unplug it, while the truck is off, then the EGR will stay closed . If the EGR valve is clogged or completely blocked off it can longer re-burn harmful emissions in the combustion chamber. You’re now sending the exhaust gas away from the engine when using an EGR delete kit, which means it begins to run cleaner.
Will a bad EGR valve throw a code?
Question: If I have a bad EGR valve, will it throw a code for a misfire in cylinder number 2? Answer: A bad valve most likely will cause a random misfire since it doesn’t direct exhaust gases to a particular cylinder.
What happens if an EGR valve is stuck closed?
If the EGR system is clogged up, or the valve is stuck closed, the combustion temperature increases . This may cause pinging (detonation), as well as surging on light acceleration. In a diesel engine, a bad EGR valve is one of the causes of a black smoke. The Check Engine light might also come on in either case.
How much does it cost to replace the EGR valve?
The average cost for an EGR Valve Replacement is between $314 and $399 but can vary from car to car.
What causes EGR valve failure?
The failure of the EGR valve on the vehicle is not out of the ordinary, as this issue can arise on most modern diesel engines. The failures are usually caused by a build-up of deposits in the EGR valve over a period of time that causes them to stick.
Can you clean a EGR valve?
To clean the valve, wear an acid-resistant pair of gloves. Put on safety glasses, too, as the carbon deposits could become airborne in the process. Spray the EGR valve cleaner onto the carbon deposits . Remove the carbon buildup with the use of a pipe cleaning brush and dull scraper.
Will a car run without EGR valve?
It might affect the environment but it is not harmful to the engine . Some people are running for more than 50k km without EGR. The EGR is disabled in all remapping.
How long can you drive with bad EGR?
it shouldn’t cause any other problems UNLESS it is completely stuck open. (only seen this once in 5 years) a stuck open EGR valve can cause stalling at idle, no start, rough idle. for the most part, it is safe to drive without limitations .
