1992 Sable rough idle after 1 minute

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kilowatt66 - 26 Aug 2006 03:21 GMT

A family member has a problem with a '92 Sable (3.8L) after about 1
minute after startup (hot or cold engine). The engine starts to idle
rough, and sometimes stalls. Restart is fine and acceleration is good
with no problems. The car has 76K miles and had a head gasket
replacement 30K miles ago and was running fine until recently. Also,
another unrelated problem occurs occasionally with the check engine
light. It comes on momentarily and then goes out at random times. No
problems are noticed while driving when it comes on. I have not taken
it anywhere to check codes yet. Any suggestions? Thanks

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Mortimer Schnerd, RN - 26 Aug 2006 06:29 GMT

> A family member has a problem with a '92 Sable (3.8L) after about 1
> minute after startup (hot or cold engine). The engine starts to idle
[quoted text clipped - 5 lines]
> problems are noticed while driving when it comes on. I have not taken
> it anywhere to check codes yet. Any suggestions? Thanks

Throttle positioning sensor or the AIC.

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Mortimer Schnerd, RN
mschnerdatcarolina.rr.com

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kilowatt66 - 02 Sep 2006 02:06 GMT

Hello and thank you for the reply. The problem turned out to be a
cracked/bad vacuum hose which was causing the poor or no idle and check
engine light to come on occasionally. Hope this helps someone else
having a similar problem.

Thanks again!

> > A family member has a problem with a '92 Sable (3.8L) after about 1
> > minute after startup (hot or cold engine). The engine starts to idle
[quoted text clipped - 7 lines]
>
> Throttle positioning sensor or the AIC.

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Mortimer Schnerd, RN - 02 Sep 2006 21:18 GMT

> Hello and thank you for the reply. The problem turned out to be a
> cracked/bad vacuum hose which was causing the poor or no idle and check
> engine light to come on occasionally. Hope this helps someone else
> having a similar problem.
>
> Thanks again!

This is a rare thing. Although I turned out to be wrong, I wish everyone with
car problems would tell us how it turned out like you did. Thanks for posting
the sequel.

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Mortimer Schnerd, RN
mschnerdatcarolina.rr.com

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