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'98 Olds LSS PCM swap
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SBlackfoot
Oct 12, 2008, 2:57:18 PM10/12/08
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I *think* my intermittent 'check oil' condition is related to a flakey PCM.
Occasionally the 'check oil' light flashes and the engine either stumbles or
stalls outright pretty much whenever the hell it feels like it, even when I
have the oil level sensor bypassed right at the PCM. While digging through a
junk yard during a 'free-parts-day' I found a few similar cars and grabbed
their PCMs to play with. The most promising came from a '98 car of the same
body style (a Bonneville perhaps?), except it was supercharged (My Olds is
N/A). The other two were from N/A cars, just a year or two older.
Occasionally the 'check oil' light flashes and the engine either stumbles or
stalls outright pretty much whenever the hell it feels like it, even when I
have the oil level sensor bypassed right at the PCM. While digging through a
junk yard during a 'free-parts-day' I found a few similar cars and grabbed
their PCMs to play with. The most promising came from a '98 car of the same
body style (a Bonneville perhaps?), except it was supercharged (My Olds is
N/A). The other two were from N/A cars, just a year or two older.
So, obvious questions. Is there any risk in trying any of the junkyard PCMs?
I read that the PCM needs to be programmed for each specific car. Is this
just a VIN-matching thing, or a functionality thing? What are the odds that
the programming is on a removable chip inside these things? The older ones
appear to have access panels while the '98 part I think does not.
1998 Oldsmobile LSS, 3800 N/A, flaky as hell.
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