Although we haven't had a problem with our fuel pump relay, I have some experience with the OVP relay. A new one I bought went bad within 2 weeks. so I disassembled it. Poor assembly procedures at Bosch are the guilty party. Resoldering the bad contacts have allowed it to continue working for the past 3 years, so far. I 'reconditioned' the old relay, which suffered from the same problem, and it resides in the spares kit.

I don't know it the pump relay has similar problems, but if it comes apart, that is what I would do before thowing more money at a problematic part.

Steve

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'91 MB 190E 2.3
'08 RAV4 Ltd 3.5
'83 Lazy Daze m'home 5.7