[mc_883]

On Sunday I started the 85 and it started laboring, While in drive the RPM would go up than
down while idioling? Any ideas where to start
looking?

[toobroketoretire]

Originally Posted by mc_883

On Sunday I started the 85 and it started laboring, While in drive the RPM would go up than
down while idioling? Any ideas where to start
looking?

As the IAC motor controls the idle speed I'd try unplugging and re-plugging it's electrical connection a few times with the engine off. Also if you have any contact cleaner you could try shooting that into the connection.

[mc_883]

I do not know where to look for the IAC motor control. Thanks

[toobroketoretire]

Originally Posted by mc_883

I do not know where to look for the IAC motor control. Thanks

It's the thing that attaches to your throttle body and has a electrical plugin on it's side. The throttle blades remain almost completely closed at idle and it's the IAC motor that controls the amount of air getting into your engine. The IAC motor has a tapered-end "pintle valve" that will extend or retract according to the engine's air needs and the pintle is controlled by a "stepper motor" which is a motor that can spin in either direction.

[mc_883]

Stupid question... by pulling the plug is this reseting something or is with the contact cleaner
to make what could be a bad connection?


Thank for the help!

[crossflag]

Originally Posted by mc_883

Stupid question... by pulling the plug is this reseting something or is with the contact cleaner
to make what could be a bad connection?


Thank for the help!

A little of both !

[mc_883]

I started the car a day later and did not seem to have the problem. Today I pulled the plug both ends
looked pretty clean but i still sprayed some contact
cleaner plugged it back in and the car seems to run
fine ......I will just have to watch it and see.

Thanks