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.

Found my low speed miss, but.........still need some help

Old 10-16-2004, 04:50 PM
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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.
Old 10-16-2004, 06:27 PM
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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 #
Old 10-16-2004, 07:40 PM
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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.
Old 10-16-2004, 07:57 PM
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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
Old 10-16-2004, 08:00 PM
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I said what?
Old 10-16-2004, 11:10 PM
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My bad. It was mechanical. i will now close my big mouth
Old 10-17-2004, 12:07 AM
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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
Old 10-17-2004, 04:21 PM
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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.
Old 10-17-2004, 04:53 PM
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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.
Old 10-17-2004, 07:49 PM
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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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