i was tinkering last night on the brick trying to familiarize myself with every part and wire so that i could more accurately describe stuff to you guys on this page, and i remembered that chris mooney had said that a good test (and free) is to check the voltage at the pump... i couldn't for days figure out what you all meant by "jumper the four and seven" etc, but i finally realized that you just meant to bridge the fuses in the fuse panel (why it took so long to understand? i dunno!) anyway, i did that and then checked the volts at the number 7 fuse. around 12v. then i checked the wires at the pump, and only 2.2 volts! could that be my problem? the car ignition was on and i just used a test light with a clip to be the jumper, so if i did everything right, then i might just have a lack of volts to the pump! i will put everything back together and run and temp wire from the fuse panel to the pump and see if that does any good.

if the lack of voltage is the prob, then i either have bad wiring somewhere, or maybe a bad relay?

thanks,

shawn

By using a test light as a jumper you may still be giving yourself a false reading, try that same test using a piece of wire instead of the light. (Remember path of least resistance is what electricity is all about...) Grab some alligator clips from your local radio shack or what-have-you. (If you've got any degenerate teenage neighbors they can point you in the right direction, they're more commonly used as roach clips than for electronics...)And make up a couple of jumpers with them. They'll come in handy.
If on completing this test you've still got 2.2 volts then yes, that's a problem that should be easily remedied with some wiring troubleshooting.
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Chris, Dartmouth NS Canada 70 M-B 280SE, 83 245DL, 84 244 turbo, 90 780 turbo, 92 VW Golf

With five distinct threads on the same stuff you might have already covered this, but fuel pump relay socket is a good place to begin looking for a bad connection. Then the relay itself. The fuses. The fuse terminals. The wires at the pump.

i had some starting/running problems with my 85 turbo. carfully remove the six connectors from the plastic piece at the fuel pump relay and squeeze them a little tighter and reinstall. then resolder relay circuit board. (magnifing glass or jewelers loupe helps wonders). i believe to test the main fuel pump you need to test current draw hooked up in a series, with pump running, i think it should be around 8 amps current draw. replace all fuses and clean fuse holders also. i suggest the bentleys service manual for turbo troubleshooting. good luck

maybe this was covered also but check the ground connections - just as important as the power connections.