Audi 5000CS Quattro Turbo - Stalling issue!

All,
I have a current stalling/starting problem with my '86 5000 TQ.
-Starting: Sometimes if I release the key before the motor starts (generaly fires in 3-4 seconds of cranking), I have to wait ~5 min
before making another attempt. If I attempt to start before ~5 mins, engine will maybe 'pop', but will simply crank (as if no fuel in the system.) Happens mostly COLD, sometimes WARM.
-Stalling: Earlier this week, stalled out in an intersection (WARM engine). Same as above, had to wait ~5 mins then restarted.
Any thoughts? Thanks!
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ign switch? loose intake boots? residual fuel pressure leaking down too fast!

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Or leaking injectors causing flooding. Try a bottle of Techron injector cleaner.
dave AKA vwdoc1 wrote:

</pre> <blockquote type="cite"> <pre wrap="">All,
I have a current stalling/starting problem with my '86 5000 TQ.
-Starting: Sometimes if I release the key before the motor starts (generaly fires in 3-4 seconds of cranking), I have to wait ~5 min before making another attempt. If I attempt to start before ~5 mins, engine will maybe 'pop', but will simply crank (as if no fuel in the system.) Happens mostly COLD, sometimes WARM.
-Stalling: Earlier this week, stalled out in an intersection (WARM engine). Same as above, had to wait ~5 mins then restarted.
Any thoughts? Thanks! </pre> </blockquote> <pre wrap=""><!---->
</pre> </blockquote> </body> </html>
--------------010004060500050903040400--
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i had a 200 quatro with the same symptom. it turned out to be a hole worn into the underside (hard to see) of a 2" rubber hose leading from the top front of the engine compartment to the air intake. i think what was happening was that the computer was compensating for the hole at times (after you got it running) but then had difficulty maintaining the right settings at other times (slowing down comming off the highway)
hope this helps - it was a bear to figure out
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In article

Fuel pump relay?
Quite easy to eliminate by replacing it with a jumper wire (across the 2 large terminals). For safety reasons do not leave the jumper wire in place as the fuel pump will be running all the time it is there.
G.
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This is a multi-part message in MIME format. --------------070803030405070600090403 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit
The fuel pump normally runs constantly when the engine is running and it will still shut off when the ignition is turned off.
The risk is that in an accident the key will be on and the engine stopped and with the possibility of leaking fuel there is the potential for a fire that will continue to be fed. Not a good idea but the test is still valid to see if the relay is the problem,
The issue could be a number of things but vacuum leaks, fuel pressure issues an ignition problem due to hall effect module on distributor are places I could check.
Replace fuel filter, Clogged screen on the fuel pump, injector issues, sticking air flow plate in intake box, plugs / wires ...
ovalking wrote:

--------------070803030405070600090403 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta content="text/html;charset=ISO-8859-1" http-equiv="Content-Type"> </head> <body bgcolor="#ffffff" text="#000000"> The fuel pump normally runs constantly when the engine is running and it will still shut off when the ignition is turned off.<br> <br> The risk is that in an accident the key will be on and the engine stopped and with the possibility of leaking fuel there is the potential for a fire that will continue to be fed. Not a good idea but the test is still valid to see if the relay is the problem,<br> <br> The issue could be a number of things but vacuum leaks, fuel pressure issues an ignition problem due to hall effect module on distributor are places I could check.<br> <br> Replace fuel filter, Clogged screen on the fuel pump, injector issues, sticking air flow plate in intake box, plugs / wires ...<br> <br> ovalking wrote: <blockquote cite="mid: snipped-for-privacy@bt.com" type="cite"> <pre wrap="">In article <a class="moz-txt-link-rfc2396E" href="mailto: snipped-for-privacy@g31g2000yqc.googlegroups.com">&lt; snipped-for-privacy@g31g2000yqc.googlegroups.com&gt;</a> Matt, <a class="moz-txt-link-abbreviated" href="mailto: snipped-for-privacy@gmail.com"> snipped-for-privacy@gmail.com</a> writes: </pre> <blockquote type="cite"> <pre wrap="">I have a current stalling/starting problem with my '86 5000 TQ </pre> </blockquote> <pre wrap=""><!----> Fuel pump relay?
Quite easy to eliminate by replacing it with a jumper wire (across the 2 large terminals). For safety reasons do not leave the jumper wire in place as the fuel pump will be running all the time it is there.
G. </pre> </blockquote> </body> </html>
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