EGR Valve - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 11-30-2005, 01:30 PM   #1
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Default EGR Valve

ok, i'm getting the Oil changed and the guy tells me that the EGR valve isn't hooked up and asked if the check engine light was on. well, it wasn't on so i don't kow whats up. Why would someone unhook the EGR valve? it seems to run just fine but i don't know if it could have any long term effects.
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Old 11-30-2005, 01:46 PM   #2
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Makes no sense. Did he point it out to you on the engine? Maybe he mistaken something else for the EGR...

Although..everything should be hooked up.
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Old 11-30-2005, 01:53 PM   #3
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thats what i thought too, he showed me himself, and he showed me the connector that should be hooked up to it. now i can't say for certin that it is the EGR valve, i'm taking his word on that. i know Jeep engines inside and out but this 3800 is foreign to me.

standing in front of car, its on the front right side of the engine, its got a spot for the connector on top and cant be much bigger then a can of soup.
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Old 11-30-2005, 01:57 PM   #4
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I'm at a loss...lol.. I sold my series 1 and my memory went with it. Uh..yes..it is up front...there is a corregated looking pipe going to it from the front exhaust manifold.
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Old 11-30-2005, 02:06 PM   #5
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i thought it was the series II in there? hmm... i'm trying to fid a pic of what it is...
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Old 11-30-2005, 02:10 PM   #6
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this is the part...


**can't seem to figure out the correct way to post pics... sorry
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Old 11-30-2005, 02:10 PM   #7
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95 was the first year for series 2 NA motors. Being SC 95 is the last year for the Series 1 SC motor.

(I just sold my 95 SSEi... never spent as much time under the hood as my S2 97)
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Old 11-30-2005, 02:16 PM   #8
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if i was to just hook it up whats the worst that could happen? all it does is control the flow of exhaust gasses into the intake, so it would just run horrible if its broken I think... I would hate to mess with this and screw up something more in the engine. one of those if it aint broke don't fix it things...
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Old 11-30-2005, 04:05 PM   #9
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It shouldn't break by you hooking it up. It might already be bad and set a check engine light. as a preventative measure, buy an EGR gasket.

Then remove the EGR valve and gently push on the pintle valve (black thing) underneath to see if it'* free moving or not. I used carb cleaner to remove some carbon and reinstalled. Works great.
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Old 11-30-2005, 04:11 PM   #10
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sounds like a good place to start. I'll try that one soon as i get a chance to. i don't think that it is a pressing matter because i've been driving it for about a month now without a problem. thanks for your help!
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