5ktq high 'idle' - another update - getting there!

[Ameer Antar]

Yes, it could. I had a bad ground on the ISV temp sensor and it caused the idle to be a bit high. On my 5000 turbo, the ISV system gets temp input from the red 2-pin sensor that's on top of the coolant outlet on the head. This might be different on MC motors, but it might be worth double checking all those sensors and their wiring. A wiring diagram would make things a lot easier...
 
-Ameer
 
-------------------- Original Message --------------------
Message: 4
Date: Tue, 31 Oct 2006 07:51:24 -0500
From: Kneale Brownson [kneale at coslink.net]
Subject: Re: 5ktq high 'idle' - another update - getting there!
To: "E. Roy Wendell IV" [erwendell at mac.com],quattro at audifans.com
Message-ID: [4.1.20061031074911.0112e650 at pop.powerc.net]
Content-Type: text/plain; charset="us-ascii"

Since the controller relies on a sensor to "know" the coolant temperature,
a faulty sensor also could cause the problem, couldn't it?
At 11:59 PM 10/30/2006 -0500, E. Roy Wendell IV wrote:

>You are correct in thinking that a cold running engine may be causing
>your high idle. If the engine is running cold enough the idle speed
>controller will mistakenly think that the engine is still warming up
>and set the idle higher than normal.
------------------------------