Found my low speed miss, but.........still need some help - 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 10-16-2004, 05:50 PM   #1
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Default Found my low speed miss, but.........still need some help

I have a low speed miss that I couldn't find. Today you could feel it when power breaking but when I disconnected my EGR valve it smoothed right out. So my questions is, does that mean a need for a new EGR valve or could there be a problem with my programing that could be causing it. I don't want to go part swapping unless I have to.

Second, does anyone know the part number for the EGR valve on a 95 SSEi? I have looked on Ebay and could save some money there but I want to make sure I get the right one.

Any help would be greatly appreciated.
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Old 10-16-2004, 07:27 PM   #2
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Ahh your EGR is probably leaking. Might try yanking it, cleaning it, and putting a new gasket under it to see if that helps.

www.gmpartsdirect.com - their catalog should have the part #
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Old 10-16-2004, 08:40 PM   #3
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my experience with them says replace it, but cleaning is a cheap way to start! My grandma'* pontiac 6000 had a similar problem and the egr had to be replace...the plunger got to sticking.
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Old 10-16-2004, 08:57 PM   #4
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JDB: what year was that 6000? Because I betcha that was a mechanical EGR valve.. found on the midish 80s cars.. which had a vacuum line, which [dr jay said, not me] is controlled by the ECU.. ECU controlled vacuum.. who the hell thought of that???


-justin
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Old 10-16-2004, 09:00 PM   #5
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I said what?
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Old 10-17-2004, 12:10 AM   #6
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My bad. It was mechanical. i will now close my big mouth
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Old 10-17-2004, 01:07 AM   #7
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Anyway, yours is electronic. Ofcourse you should try to clean it first. Why spenf 80 bucks when a 2.00 dollar shot of carb cleaner would fix it? Try the cleaner, bolt it back on. If the miss is still there then replace it. I average about a 50/50 success ratio.
If it doesn't work your only down by one hour of time. If it does work your up $80
bucks.

Try it. If it pukes by another. I say ALWAYS try the cheap stuff first.

JLathem
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Old 10-17-2004, 05:21 PM   #8
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Default Try cleaning first

I had the same problem, it finally started throwing codes. My EGR was able to be cleaned and that fixed the sticking open problem.
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Old 10-17-2004, 05:53 PM   #9
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9 time out of 10, cleaning will buy you at least another year. I've owned my SSEi for 2.5 years, and I've cleaned it twice for sticking. Still running strong.
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Old 10-17-2004, 08:49 PM   #10
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Ok, I appreciate the help and I am going to clean it and put on a new gasket. I looked in the Techinfo for instructions but couldn't find any.

Can anyone share the cleaning process.
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