I finally got the used fuel pump. I wanted to test it before I install it. (This is the single intank fuel pump for a 1995 940). The new (used) pump is totally dry (not dripping with fuel) - it says 12v and is the right number bosche (05804530330) part. Can I run a positive (from the battery) directly to the positive (12v) terminal on the pump and ground the ground (negative) to test it before installation?

I would be careful testing the pump dry. The fuel acts as a lubricant and coolant for the pump. It might be ok to put a couple of teaspoons of 2 cycle oil in the inlet of the pump for a short run test. Run the test in a bucket or paper bag to keep dry.

Good luck,

Dan

Woo, you da man! That did the trick (I used some wd-40). I am not sure how long this used pump sat before I installed it but it was pretty clean (dry). Once I got the old pump out - that was a royal PITA - the new one went right in and the car started right up. I am still concenered at how hot the fuel pump relay was?? - I'll start that thread in a second.

Anyway thanks again.

Does the relay run hot with the new pump? There are three places heat can come from in the relay, maybe four:
1) Contacts on the relay to the socket.
2) Coil of the relay.
3) Internal switch contacts of the relay.
4) Circuit traces on the Printed circuit board.

All four will generate some heat, but 1, 3, and 4 will generate more heat than normal if the fuel pump is drawing more current than it should. I believe the FAQ has normal values for the fuel pump current.

Dan W.