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MSD · 08-07-2003, 07:06 PM

My mom's 1993 Lincoln Town Car has been running really roughly lately, so I hooked up my diagnostic computer to the engine, and of the 6 persistant error codes I got, 5 indicated that it's running lean, and the 6th determined that the culprit is an EGR valve that won't open. I popped out a few plugs, and the contacts were all white, which means it's running hot, probably due to a lean fuel mixture.

I have the Haynes repair manual for the car, and seeing as it covers all models from '81 to '98, it didn't have a specific diagram for each model, it gave the wonderfully helpful information that teh EGR valve is most likely located next to the carburetor. My thought: Great, I'm supposed to ignore the fuel injectors and look for this thing next to the carburetor. I poked around near the manifold for a while, and found nothing matching the low-res, tiny, grainy picture that they so helpfully provided. It implies that the EGR valve has an exposed diaphragm that I ould push on to test it, but I only found one barely accessable part with a metal case.

So, where is the EGR valve, will I need to disassemble it (i.e. have my uncle/family car guy look at it,) and is it expensive to replace?

08-07-2003, 07:06 PM	#1 (permalink)
MSD The sky calls to us ... Super Moderator Location: CT	Where's my EGR valve? My mom's 1993 Lincoln Town Car has been running really roughly lately, so I hooked up my diagnostic computer to the engine, and of the 6 persistant error codes I got, 5 indicated that it's running lean, and the 6th determined that the culprit is an EGR valve that won't open. I popped out a few plugs, and the contacts were all white, which means it's running hot, probably due to a lean fuel mixture. I have the Haynes repair manual for the car, and seeing as it covers all models from '81 to '98, it didn't have a specific diagram for each model, it gave the wonderfully helpful information that teh EGR valve is most likely located next to the carburetor. My thought: Great, I'm supposed to ignore the fuel injectors and look for this thing next to the carburetor. I poked around near the manifold for a while, and found nothing matching the low-res, tiny, grainy picture that they so helpfully provided. It implies that the EGR valve has an exposed diaphragm that I ould push on to test it, but I only found one barely accessable part with a metal case. So, where is the EGR valve, will I need to disassemble it (i.e. have my uncle/family car guy look at it,) and is it expensive to replace?