It's been a while, and I am still trying to find out where the fuel pump relay is located, and how to test it as well. I have a 1993 Audi 90 cs, and checked for voltage at the fuel pump switch, and got nothing not even a blink of light with a light tester, and then the info. sheet I have to check for the relay does not show exactly where to find it. I checked out my fuses and they are good. Any good advice or maybe a good way to test the relay or find it at the least. I will be grateful for any help, thanks. Just ordered the repair manual form my car online, that should help as well.

 

they are usually under dash next to steering wheel.it might not be labelled so it is best to buy or just look at a repair manual.could also be under hood.

 

Hey thanks for the help, I will check it out as soon as I get a chance, and maybe call audi dealer to ask for a manual cause no one seems to have it, not even haynes websites. Good looking out though, should lead me somewhere closer to the chase.