Weird Idle --
superba
superba at comcast.net
Tue Sep 16 17:35:25 EDT 2003
Hi Rand et al,
Get a copy of Probst's book on Bosch Fuel Injection Systems and use the
troubleshooting steps in it. My guess from 10,000 feet is that one of these
is faulty: (1) grounding of the ECU to manifold, (2) ECU itself, (3) Ox
Sensor. I think the Marketplace database on the Quattro web site has the
name of a bookstore that will sell the book to you; there was one in
Alameda, CA. You may be able to find a copy close to home.
Someone posted not long ago that many ECU probs are caused by faulty
grounding, I second that.
HTH.
Cheers!
Jim Jordan
> Message: 1
> Reply-To: <orsopers at comcast.net>
> From: "Rand Soper" <orsopers at comcast.net>
> To: "'Quattro List'" <quattro at audifans.com>
> Subject: The continuing Idle weirdness saga...
> Date: Mon, 15 Sep 2003 20:34:22 -0700
>
> Well, the idle weirdness in my '88 80q has gotten weirder. Last week I
> replaced the radiator (all copper $225.00 from Discount Import Parts in
> Milwaukie, Or) and replaced both the coolant temp. sender (for the dash
> gague) and the coolant temp. sensor (for the ECU). Both were original to
> the car, as are all the other sensors. My temp gauge now reads correctly
> and the idle was better for two days.
>
> When I first bought the car it idled fine but within a day the
> idle switch
> went dead. I replaced it and all has been well since except
> that it would
> idle,rock steady, at 1000 rpm. Now two days after replacing the radiator
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