EGR Valve

[SiZzOuRcE]

The imfamous EGR valve strikes again. I have a 1994 Grand Marquis and I got my car diagnosed when the first engine light came on. I was told it was an EGR problem, having no idea what it was, I let it go. Nothing seems to be happening right now, so thats good but I was told it will affect the performance later, don't know how true that is.

Anyways, they wanted to charge me 325 to fix it, so I told them to shove it. Is it worth getting fixed? And how much should it cost me?

Can someone please tell me what the hell it does anyways and does it affect gas milage?

Thanks, any feedback will be appreciated!

[cobradude360]

whats really happining is a very big recuring problem with these engines theres a lil horse shoe shaped passige way under the intake elbow that gets colged up easly so if ur any good with tools or mechanicale nowhow then i would do it ur self and the egr just controls the blow by gasses i beleave not quite sure but i do know that this is a recureing prob on these engine ive had to have mine done twice in the past75000 miles so good luck

[Marco Sr.]

Originally Posted by cobradude360

whats really happining is a very big recuring problem with these engines theres a lil horse shoe shaped passige way under the intake elbow that gets colged up easly so if ur any good with tools or mechanicale nowhow then i would do it ur self and the egr just controls the blow by gasses i beleave not quite sure but i do know that this is a recureing prob on these engine ive had to have mine done twice in the past75000 miles so good luck

The EGR Valve does not control blowby gases, EGR stands for Exhaust Gas Recirculation, and is primarily active when the vehicle is cold to preheat the fuel mixture with exhaust gas being alowed to flow back into the intake manifold. If the EGR valve gets clogged and is held in the open position it will effect the way the engine idles (making it run rough and intermittently die) and generally you can just remove the EGR and clean out the carbon buildup in the openings, and around the seat of the valve itself. Of course vacume leaks will also directly affect the operation of a multitude of valves, EGR, Heater & several other systems that use vacume.

Marco Sr.

To answer the original question, yes it is advisable to get it cleaned out or replaced and you should be able to do it yourself, generally there are 3 bolts that mount the EGR Valve to the Intake Manifold, if you do not replace the valve make sure that you get a replacement gasket unless it is a hermetically sealed unit, then you should clean the 2 surfaces without gouging it up and then reassemble it dry.