Moderator: Moderators
spencerforhire wrote:Oh you absolutely have a wiring problem and it very well may be ground related. By probing the fuel pump line with a test light, you're essentially grounding it through the bulb in the handle of the tester. That bulb takes less power to light than the pump takes to run, so the voltage takes the path of least resistance. It could be the oil pressure switch only providing a partial connection. If you remember back last year I explained how the OEM oil pressure switch is wired; the blue wire to the pump rests connected to the purple start wire, and when the engine builds oil pressure it switches to the pink(ignition) wire. To diagnose what's going on, try a jumper from the pink to the blue with the switch unplugged; this would let the pump run as long as the key is on, and should now be unaffected bu the test light.
spencerforhire wrote:Please explain how you have the relay wired; also the OEM fuel pump wiring doesn't have any relay of it's own. I don't know what relay you're hearing.
spencerforhire wrote:Please explain how you have the relay wired; also the OEM fuel pump wiring doesn't have any relay of it's own. I don't know what relay you're hearing.
Return to Carb/Intake/EFI Induction Tech
Users browsing this forum: No registered users and 7 guests