87 5kcstq Dead Fuel Pump Troubleshooting

[S. Jaworski]

I called my parts supplier. 443 906 087BE  cross references back to 447 906
091C . Family album calls out 447 906 091C    in illustration 24-10
"My price(repair shop price)" would be $235 . . . . . can't beat Linda's
price of $199  !!!  . . + shipping.

I would'nt jump to conclusions yet about what failed. Does'nt sound like you
did enough troubleshooting yet.
I have never tested fuel pump on a 5k yet, but if I were doing it:
1. I would check fuel pump output . . . perhaps disconnect at fuel filter
and see what comes out?  I always wanted to put some kind of quick
connector/adapter at this point for measuring fuel pressure . . . anybody
out there done anything like that?
2. If #1 fails, check for 12v at fuel pump . . . or closest connector to
fuel pump
3. If #2 fails, check for 12v at some halfway point between fuel pump and
battery . . . check schematic
4. Keep working your way back to the battery

Ahhh . .what the hell . .I'll do it for you.
a.) Green/Yellow wire at fuel pump . . . looks like a connector there . .
Brown wire is ground . . . Green/Yellow is +12V

b.) Green/Yellow wire goes to fuse S13, 15amps

c.) Fuse S13 goes to Fuel Pump Relay

d.) Fuel Pump Relay goes to Battery

e.) I think you can jump out that fuel pump relay with a fuse .. there is a
connector on top of relay for that.

Hope that helps

Now, lets get back to that Mime/No Mime stuff.

Syl
88 5kq
90 100q


> Message: 3
> Date: Tue, 06 Mar 2001 10:31:17 -0800
> From: Motor Sport Visions Photography <msvphoto at pacbell.net>
> To: quattro at audifans.com
> Subject: 87 5kcstq Dead Fuel Pump Troubleshooting
>
> In between arguments over mime/no mime html/no html, etc. I would like
> to reach out to you all and ask for a wee bit of "no start"
> troubleshooting help. Some may recall my first post on this
> yesterday...a couple folks suggested the fuel pump relay, thank you!
> But, I had already changed it :(
>
> The car now sits safely in my carport awaiting my time to properly
> troubleshoot it, but based on the way it died my focus is on the Fuel
> Pump. When running ECU output tests with a new FP Relay the FP did not
> make any noise, but that was troubleshooting streetside in a rain storm
> so who knows.
>
> I have the book-o-Bentley and decent troubleshooting skills so I am
> pretty clear on how to determine if the FP is my problem.
>
> My specific questions are:
>
> 1. Does the tank really need to be drained to R&R the fuel pump?
> (Suggestions??? Siphon into another car or???)
>
> 2. Anyone know where the best place to get a fuel pump is these days?

 (TPC wants for P/N 447 906 091C    $199.00

 and Linda wants  P/N  443 906 087BE  $190.00

which is supposed to be the latest "sub") I imagine
> Carlsen/Linda is the way to go?
>
> 3. I'll try searching the archives for the old tank screen threads, but
> in case I don't dig them up can someone remind me with BTDT info on what
> I need to look for/do there?
>
> TIA! Now we may return to our MIME/HTML on/off issues ;-)
>
> Mike Veglia
> Motor Sport Visions Photography
> http://www.motorsportvisions.com
>