[urq] No start situation - suddenly

Thu Apr 8 04:12:57 PDT 2010

Hello Pat
Thanks for this.
I've just checked - no spark on #1.
In all the work I have done I haven't touched the distributor and the 
cam/crank timing is cock-on.
You're right about no spark = no signal to fuel pump relay - just got to 
find out why no spark when it all worked fine a week or so ago.All I've done 
since is re-fit the bumpers and lights/grill. Weird.
There is power to the coil - unsure what/how to test further.
Going back to garage to have a think!
Thanks again.

Keith

----- Original Message ----- 
From: "Patrick Carlier" <p.carlier at pandora.be>
To: "Keith Lloyd" <spotatashleys at hotmail.com>
Sent: Thursday, April 08, 2010 10:27 AM
Subject: Re: [urq] No start situation - suddenly

> Do you have ignition ?
>
> If not , Check the distributor hall window .
> If it's off a tiny little bit , you'll have no spark , hence no signal to 
> the
> fuelpump relay .
>
> If you do have spark , I would temporarily hotwire the fuelpump
> to see if it will start then .
>
> Pat
>
>
>
> ----- Original Message ----- 
> From: "Keith Lloyd" <spotatashleys at hotmail.com>
> To: <urq at audifans.com>
> Sent: Thursday, April 08, 2010 11:18 AM
> Subject: Re: [urq] No start situation - suddenly
>
>
>> Well I've ruled out the battery spinning the motor too slowly, so I'm 
>> back
>> to there being some break in continuity between the ignition switch and 
>> the
>> fuel pump relay (#10 in the fuse box). Anyone know the route the wire 
>> takes
>> and any potential trouble spots along the way?
>> Cheers
>>
>> Keith
>>
>> '87 WR
>> ----- Original Message ----- 
>> From: "Keith Lloyd" <spotatashleys at hotmail.com>
>> To: "Keith Lloyd" <spotatashleys at hotmail.com>; <urq at audifans.com>
>> Sent: Wednesday, April 07, 2010 9:10 PM
>> Subject: Re: [urq] No start situation - suddenly
>>
>>
>>>I may have the answer to my own question in this snippet I found from 
>>>Phil
>>>Paynes old site :
>>> "A fuel pump control signal. This signal is applied to the fuel pump 
>>> relay
>>> (J17) once engine RPM reaches a preset limit and is cut if the engine
>>> stops (fire prevention in event of an accident), the programmed maximum
>>> boost levels are exceeded (to prevent engine damage) or the engine rpm
>>> exceeds a safe limit. The WR's fuel pump relay is in position 10 of the
>>> under-bonnet fuse box on later cars and should be blue with "67" on the
>>> cap. "
>>> My battery is running a little low and turning over sluggishly, so 
>>> perhaps
>>> it is not attaining sufficient RPM to activate the fuel pump relay?????
>>> I'l get a new battery tomorrow, which I was intending to do anyway. And
>>> see what effect that has.
>>> Regards
>>>
>>> Keith
>>>
>>> '87 WR
>>> ----- Original Message ----- 
>>> From: "Keith Lloyd" <spotatashleys at hotmail.com>
>>> To: <urq at audifans.com>
>>> Sent: Wednesday, April 07, 2010 8:51 PM
>>> Subject: [urq] No start situation - suddenly
>>>
>>>
>>>> Over the winter I had the old girl resprayed and since then have 
>>>> snatched
>>>> only odd moments of free time to put her back together again, replacing
>>>> the cam belt and radiator at the same time. I filled the system with
>>>> water to check for leaks, fired her up and made sure everything 
>>>> worked -
>>>> which it did. Since then I have refitted the bumpers and lights and now
>>>> suddenly she wont start.
>>>> I am fairly confident the problem is lack of power to the fuel pump -
>>>> obvious sign - no sound of it priming when switching on ignition. To
>>>> check this I worked backwards:
>>>> I have a supplenetary relay set up to provide the fuel pump with the 
>>>> full
>>>> voltage so the wiring is all in place to test the pump with a direct 
>>>> feed
>>>> from the battery. I can confirm that the pump works by giving it a 
>>>> direct
>>>> feed from the battery..
>>>> I tested the relay (the supplementary one mentioned above) and this 
>>>> works
>>>> fine but is not receiving any power from upstream. I have tested the
>>>> actual fuel pump relay (relay #10 in the fuse box - part number
>>>> 857951253). This works but is receiving no power to trigger it.
>>>> The fuse (#13 - 15A) This is fine and intact.
>>>> However there doesn't appear to be any power reaching terminal the fuel
>>>> pump relay. Looking at the only wiring diagram I have (which is for US
>>>> spec quattro - from Bentley) shows this relay to receive it's feed from
>>>> #15 which I understand is the ignition switch. I naturally thought that
>>>> perhaps the ignition switch had stopped functioning. But checking the
>>>> only other items that take a feed from here (reversing light and feed 
>>>> to
>>>> coil), they both work. The problem seems to me to be somewhere between
>>>> the ignition switch and the fuel pump relay. Where though, I have no
>>>> idea. Any suggestions will be gratefully received.
>>>> I have done no work in or around the fusebox area nor under-dash. The
>>>> only work I have done is at the front (refitting bumpers and lights and
>>>> refitting rear bumpers. Is there any wiring here that has anything to 
>>>> do
>>>> with the feed to the fuel pump relay. I can't imagine so but, like I
>>>> said, any suggestions will be most welcome.
>>>> Many thanks in advance.
>>>>
>>>> Keith
>>>>
>>>> '87 WR
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>>>>
>>>
>>>
>>
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>
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