Fuel pump started making lower sounding noise when priming and wouldn't prime after a while. Let is set over night and it primed once and ran it for an hour, but didn't prime the rest of the day. Did this same thing for 3 days, but now it never primes.
Checked fuses and swapped relays and tired to jump pin 87 to 30 and still would not prime. Testing the fuel pump relay socket I get strange readings on pin 87, which I believe is the input pin from the battery, pin 30 is output. When I tested the AC relay socket I get 12V on pin 87, but get strange readings like 25V sometimes more on pin 87 on the fuel pump relay socket.
I know what a job it is the replace the in-tank fuel pump, I replaced it 4 years ago. This time it has a full tank of gas. I'm almost sure the fuel pump has gone bad but want to fixed the cause of the problem this time. I replaced the fuel filter.
I don't want to ruin another fuel pump and these readings are worrying me. Any ideas?
Checked fuses and swapped relays and tired to jump pin 87 to 30 and still would not prime. Testing the fuel pump relay socket I get strange readings on pin 87, which I believe is the input pin from the battery, pin 30 is output. When I tested the AC relay socket I get 12V on pin 87, but get strange readings like 25V sometimes more on pin 87 on the fuel pump relay socket.
I know what a job it is the replace the in-tank fuel pump, I replaced it 4 years ago. This time it has a full tank of gas. I'm almost sure the fuel pump has gone bad but want to fixed the cause of the problem this time. I replaced the fuel filter.
I don't want to ruin another fuel pump and these readings are worrying me. Any ideas?
Jun 24, 2010 at 6:13 PM