'95 SSEi EGR valve/O2 sensor replacement - 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 12-31-1969, 08:00 PM   #1
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My '95 SSEi has 76,000 miles on the clock. I bought it used at 72K so am in the process of replacing certain items that can start to get questionable around this age, and next on the list are the EGR valve and the oxygen sensor. Any "gotchas" I should know about before starting? Thanks!

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Old 12-31-1969, 08:00 PM   #2
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The oxygen sensors are not difficult to replace. Since your car is OBDII I'm unsure how many oxygen sensors you have (2 or 3?). It should be easy enough to check, just look from the exhaust manifolds down for wires coming out. Mine only has one coming off the exhaust manifold, but it'* a 1992. I'm also EGR-less

A repair manual is a great investment if you're planning to do any sort of work to your car. A Chiltons can be had for $20 and ordered from any large bookstore.

<font size=-1>[ This Message was edited by: csprague on 2002-01-31 12:18 ]</font>
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Old 07-20-2002, 10:14 PM   #3
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When is it time to replace the oxygen sensor? I don't recall reading about a suggested replacement time in the maintenance schedule. If I'm not having any problems right now, would replacing the sensor improve anything?
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Old 07-21-2002, 01:22 AM   #4
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I replaced mine when the CES light came on & I pulled the codes. Before that time I did notice shitty gas mileage though, so I know it was going.
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