Quote:
Originally Posted by gregg3gs
- pulling fuel pump up and after disconnecting the connector noticing one of the pins had melted plastic around it. I filled the hole with JB Weld and connected the electrical connector to hold the assembly together until jb weld dried. Obviouse repair would be to replace the fuel pump. (this was the apparent problem)
All in all I understand that the original firmware in the x5 sends too much current to the fuel pump and it keeps connector hot, melting plastic around it. I had new firmware loaded a year after I got the x5 (car was five years old at that time), but the damage was already done.
I did the repair about two months ago, all is good now.
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What caused that connector to heat up is not too much current, it's either a slightly loose connection, or a little bit of corrosion. The current bridges the poor connection, in return, making little tinny sparks, and causing heat. Certainly not the best thing around the fuel pump. If the problem reoccurs, I would clean the contacts and pins very carefully on that connector, and use some good contact cleaner on it. I might want to use some dielectric grease on the connectors as well.