car won't idle...

[Richard van der Hoff]

Sorry, I should have said - this is a 1991 2.0L coupe - engine code 3A.

Rich

On Thu, 18 Jul 2002, Richard van der Hoff wrote:

> The saga of my ISV continues.  The audi dealer swears blind it's the idle
> switch (and wants to charge me £230 for fixing it!).
>
> Personally, I think he's talking crap, and just wants to charge me a
> fistful of cash, but can anybody give me a description of what it's
> *meant* to do?
>
> As far as I an see, the throttle-position sensor has three pins; 1-2
> close at closed throttle, and 2-3 close at WOT.
>
> Reasons for thinking the closed-throttle switch is good are:
>
> 1. a multimeter across pins 1-2 shows healthy switching, and a voltmeter
> on pin 1 shows 0V at closed-throttle, 12V at open throttle
>
> 2. while the car's idling, opening the switch (by disconnecting it) causes
> the engine to rev higher
>
> 3. no combination of jumpers across the socket, in an attempt to
> mimic a closed throttle, make the ISV work properly.
>
> Tomorrow morning I'm going back to the dealer, where he's going to show me
> exactly what he did to justify the £60 he charged me for his diagnosis,
> but in the meantime, I'd be very interested to know if anybody has any
> ideas.
>
> Thanks again,
>
> Rich
>
> PS: And he blames my lack of blink codes (see an earlier post) on a faulty
> ECU. Don't know if he's talking crap there too, but either way it pisses
> me off.
>
>
>
>

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