Can Anyone Help ?? - Code 81

[Marccus]

I jsut installed a new IAB valve which contains the solenoid.

I 'm getting a Code 81 error,. which for a SHO is:

"Inlet Air Solenoid - solenoids"

Car idle is racing to 2000 then falls, then chuggs; cycle repeats. Same symptoms as with replaced IAB.

Could there be a wiring problem?

Can anyone detail this circuit and what to test for?

I don't have my wiring diagrams with me.

Can anyone post one here for this circuit?

Any help would be GREATLY appreciated.





Thanks.

 

[sdpatt]

It looks like the wiring harness to the IAS has a problem.

81: 3.0L SHO - Inlet Air Solenoid
81: '90-91: IAS circuit failure.

 

[Marccus]

Sorry should always post year: '89

Thanks for the reply!!!

I'll have to start chasing it down, because it sure doesn't feel good when I'm idling at a light, etc, and the engine is runnning at 2,000 rpm.

I would be very much appreciative If you or anyone else could post a circuit diagram.

 

[sdpatt]

Wiring diagrams.