Quote:
Originally Posted by Vince@MSperfab
Do you have that 9.8v lead going to the pump directly or to a relay? pictures please.
You can pull each pin out and carefully compress them with pliers.
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I am running a Vaporworx DC controller and a GM CSTV fuel pump. I have one 12V connection directly from the battery to the 12V input on the DC controller, and a second "switched" 12V connection that goes from the ECU to the second "switched" input on the DC controller. Normally when I turn the key on you can hear the fuel pump turn on.
Yesterday when I tried to start the car... the fuel pump would not turn on. The trigger wire from the ECU measured only 9.8V. Next... I rigged up a switch from the battery with a full 12 volts and connected it to the DC controller and the fuel pump turned on... so I know the DC controller and fuel pump are working.
I think there must be a bad connection between the wiring harness and ECU. The voltage going into the ECU measures 12.5V. I'll try crimping the female connectors like you said and see if that fixes the problem. Is there some kind of gel or spray that you use on the connection that prevents corrosion or do you put them together dry?
Thanks Vince!