[200q20v] Hot starts

Peter Schulz peschulz at cisco.com
Fri Sep 8 09:48:47 EDT 2000


My TQW started easier for about three weeks after the pump was replaced.
Now it's back to it's old ways, so I have to look elsewhere.  I'm going to 
clean all the ground wires for the ECU and see what happens...

Why? I was out of the country for a week and lent my ECU to Chris 
Miller.  So the car sat for a week.

I re-installed the ECU, and the car started on the first crank.

Go figure...


At 10:26 PM 9/7/00 -0400, Steve Hackett wrote:
>I have the same problem(since about 63k - now at 84k). Injectors, O2 
>sensor, vacuum hoses, etc ... did nothing.  My feeling is that it is the 
>check valve at the fuel pump.  If I jumper the fuel pump to run with 
>ignition on (before start - let it run for 5 or 10 sec.) it is audibly 
>clear that fuel has run out of the system as the pump refills the system 
>... the car starts instantly.  In your case - at 110k - I wouldn't 
>hesitate to change the pump (check valve is not available as a separate 
>component), this may well eliminate the problem.  Even if it doesn't - 
>reliability will be improved that much more ( I've had pumps fail as I'm 
>sure others have) - it is just a component that wears out.
>I have yet to change the pump - it's on my fall/winter project list, so I 
>can't say 100% this solved my problem.
>Be advised > there is a special tool that is highly recommended to assist 
>in the removal of the pump within the tank ( #3214) as described in 
>Bentley vol 1 section 20.20 .
>good luck.   SH
>At 03:30 PM 9/6/00 -0400, you wrote:
>>Car has 110k on it, have replaced throttle switch, O2 sensor, full tune up,
>>w/p, t belt, pulley, front seals, vaccum hoses.  I don't get any codes, 
>>But consistently have trouble on hot starts, has never not turned over, but
>>does take a little cranking.  My question is has anyone else had this
>>trouble and remedied it with either new injectors, or cleaning and or
>>replacing the reference sensor.
>>These are next on my list, but would love to hear any feedback from anyone
>>who's had a similiar situation.
>>Thanks in advance for any help.
>>Best Regards,
>>Allen Swett
>>Montclair, NJ
>>91 200q20v Avant
>>89 200q
>200q20v mailing list
>200q20v at audifans.com

Peter C. Schulz				peschulz at cisco.com
Quality Systems Engineer/SSE		http://www.cisco.com
Customer Contact Business Unit (CCBU)	Direct: 978.275.7772
Cisco Systems, Inc. 			Fax: 	978.275.5299
900 Chelmsford Street 			Pager: 	800.365.4578
Lowell, MA 01851 USA

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