Dear Scotty,
I have a 2004 grand am 3.4L V6 with 220,000 miles, no codes. In 2018 I had the fuel pump and filter replaced because the original one went out. Six months later the fuel pump relay went out so I replaced it. A few months later the fuel pump relay went out again so I replaced it. After doing this for a couple years I finally had another fuel pump and filter put in in January 2022. Today February 13th the fuel pump relay went out again. There are no codes, all the cars wiring is original, no alterations, and the mechanic said he replaced the fuel pump wiring harness when he put in the new pump. What could be causing the relays to keep burning? There is no fuse for this circuit only the relay. When the relays go out they are always burnt on the outgoing power side. Is this a chassis ground issue, if so how do you find something like this?
It sounds like an issue with the fuel pump pulling too much current and frying the relay.
That what i thought, when it first started but have replaced the fuel pump and filter with a new one and it is still burning the relays.
If that is the case, then either the fuel pump is bad or there is a short somewhere in the wiring circuit.