Re: UrQ Hot Start - Help

[quk@isham-research.demon.co.uk (Phil Payne)]

In message <19990706212451.19970.rocketmail@web1001.mail.yahoo.com> Andrew Finney writes:

> In an effort to figure out my UrQ hot start problem I
> hooked up the fuel pressure gauge and discovered that
> the control pressure, system pressure and residual
> pressures are all within specs. I did all the
> "disconnect the coolant temp sensor and the OX sensor"
> tests spec'd in the factory repair manual and passed
> them all. The duty cycle bounces around happily at
> 45-50%. My thought is a massive air leak. I have the
> idle screw all the way in and the idle speed is still
> at the high end of normal.

a) Seriously shagged idle stabiliser valve.  Take it off the car - if
   you can blow through it, bin it.

(I did this a couple of weeks ago to a club member who turned up at my
 house with a D-plate 200TQ estate.  He also complained of high idle,
 so the first thing I checked was the ISV.  Bad.  So I threw it
 straight into the bin - right over the top of his car on the far side
 of the workshop.  Dropped right in the centre.  I had a replacement
 out of the spares box before he had his mouth shut.  Roger Galvin
 nearly soiled his underwear.  But I digress.)

b) Clamp off hoses in the breather system until you find out which one
   is carrying the leaked air.

--
 Phil Payne
 UK Audi quattro Owners Club
 Phone: 0385 302803   Fax: 0870 0883933