Idle Air Control Valve

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myc1972@netzero.net - 04 Nov 2005 05:09 GMT

Hi i Have a 1986 Oldsmobile Delta 88, 3.8L V6, vin3, port fuel
injection, car.
I started getting a really high idle on cold days, cold engine.

I took it to have the "Service engine soon" light codes retrieved and
got a bad "TPS"
and "Idle Air Control Valve" codes.
Both were replaced with GP Sorensen parts and i still get the high idle
and the service
engine soon light still comes on.
After replacing the parts i get the check engine light on almost all
the time now.

What would be causing the problem? Could it be defective parts?

Myc

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oldkid - 04 Nov 2005 05:17 GMT

did you recheck the codes?free at advance or autozone.

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putt@webtv.net - 04 Nov 2005 16:42 GMT

Both parts require specific adjustment procedures using the OBD system.
Did you follow those procedures? Neither of those parts can just be
removed and replaced without correct adjustments.

Dave S(Texas)

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Steve W. - 05 Nov 2005 03:22 GMT

> Hi i Have a 1986 Oldsmobile Delta 88, 3.8L V6, vin3, port fuel
> injection, car.
[quoted text clipped - 12 lines]
>
> Myc

Check it over real good for a vacuum leak on a cold day. Use some WD-40
and spray around the manifold while you listen for the engine to drop
the idle speed. Also check each line and connection for cracks.

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4545@mydeja.com - 05 Nov 2005 04:01 GMT

>Hi i Have a 1986 Oldsmobile Delta 88, 3.8L V6, vin3, port fuel
>injection, car.
[quoted text clipped - 12 lines]
>
>Myc

That happened to me, after I replaced an Idle Air Control Valve, on my
old Olds Cutlass Cruiser. It was 1988, with a 3.8 engine. I had to
clear the computer, a couple of times, by removing the battery
connection. Then it ran fine.

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