Buick Repair Questions? Ask a Mechanic for Answers ASAP
Hello, where are you measureing the voltage at?
Thanks, that's after the oil pressure switch. With key on in start the voltage is coming from the relay.
To test if the oil presure switch is bad you can unplug it and use a sumper wire from the pink and black to the tan and white wire. I'll post the wiring diagram below. Let me know how things go with the test.
Sorry meant jumper wire
Thanks, ***** ***** pump being new that has me stumped as well. Let me open this back up to other experts, someone should be with you shortly.
hi, do you have continuity from the fuel pump prime to the fuel pump ?
the fuel pump prime is that tan/white wire ,it comes from or near the fuel pump relay wiring .it has a connector end on it ,
or you can check from the fuel pump relay the tan/white wire ..to the fuel pump ..
that I dont think is a fusible link but a joint connection for the relay -fuel pump prime and the wire going to the fuel pump
I know ,,on the pink/blk wire that goes to the oil pressure switch ,does that stay a consistant 12 volts or battery voltage ...
when the oil pressure switch is jumped the voltage goes directly to the fuel pump as well.,so at the fuel pump with the presssure switch jumped does the voltage change too
so with the key in the rum position and not running the voltage is 3 volts ?
it only shows 3 volt key on/engine off at the fuel pump ?
also, at the fuel pump relay the pink/white wire does that show 3 volts
ok, I was going by the other persons wiring schematic.
I have mine up and I see the right colors ..the wire coming from the fusible link into the relay ,does that show battery voltage in the start position ?
and if you jump a hot wire to the fuel pump does the car now run ?
you haven't changed the oil pressure switch ?
what are the colors at the fuel pump relay ?
I want to make sure we have the same colors
that purple wire should be hot in the start position ,as far as a relay should work ,then once the oil pressure takes over or reaches around 4-6 psi then the circuit is run through the oil pressure .
I think the fusible link is bad ,you should measure the voltage coming out of the fusible link ,if fact both sides of the link when in the start/crank position ..that may be where you are losing the 12 volts needed ..
If I helped you please rate me positive and we can still continue on if needed ;
this is the only way I receive credit ,,thank you ...jazzmaster .