Electrical Guys Help - No Power to Fuel Pump, Could it be a bad coil? Options

[vesnyder]

Trying to figure out why my fuel pump is not getting any power and determined the power for the pump comes directly off the coil. The voltage leaving the relay panel is ~12V, but coming into the coil is only about 2-3V - that is with the wire disconnected - with it connected to the coil it is only ~.3V. Is this right? How do I determine if the coil is bad? How much for a new one?

[bondo]

QUOTE (vesnyder @ Oct 3 2005, 11:03 AM)

The fuel pump power does seem to come from a dedicated relay on the relay board (and I have not traced the wire?) but when checking the voltage at the coil it seems to have dropped? Is this possible? I was using the engine tin as ground. The car is stcock L-jet as far as I know. The coild does affect the voltage - does that tell you anything? The fuel pump power wire does connect to the same one as the relay. Why is the coil in that circuit? (IMG:http://www.914world.com/bbs2/html/emoticons/confused24.gif) BTW - I left the ignition on and the coild was very hot - is this normal?

Unless you made some major changes, it's d-jet. (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)

When I first got the car, I had the same problem. I swapped relays around on the relay board and it fixed it. I never had a problem after that. I suspect it's an internal relay board problem, and swapping the relays just wiggled the bad connection enough to make it work again.

The connections in the relay board are riveted together, and coated with tar-y stuff. It's a pretty common upgrade to chip all that away, clean the underside and solder all the connections.