Idle problem

[Velocity562]

Whats up everyone..I was wondering if anyone can help me out

I have an 89 fastback and I've been having a minor problem with the engine idle.

I dont know all the factory specs but I would assume that idle should be under 1000 RPM right? maybe 950 or something.

However when Im driving, when I come off the gas the idle stays at around 1100 RPM and it says like that for maybe 60 seconds to a minute and a half before it goes back down to normal.

Also sometimes when I start it, it automatically idles high at about the same..1100 RPM.

Anyone know why its doing that?

[corn322]

Idle speed is supposed to be around 700 when warm.

You say when you come off the gas it stays up. Do you mean when you are coasting to a stop?

When the engine is cold, it idles at around 1000 rpm to warm the engine up faster.

[Velocity562]

You say when you come off the gas it stays up. Do you mean when you are coasting to a stop?

Actually when I come to a complete stop..like at a redlight for example..it will still stay up