There was a couple guys on M1R that had used a single pump on eaton swaps with returnless systems fine. that's what Im planning on doing. are u lossing fuel pressure? fpdm failing? wiring issue?
If you are talking to me then...
I switched out FPDM with no change. Had a shop test wiring from harness back. yes car would start then pressure would slowly drop and car would stall.
The shop put a stock pump in my car and sure as heck car started right up and worked.
Not sure if it is the pump or the pump in my fuel hat/basket issue. My 99 has that completely enclosed fuel basket.
Maybe pump runs too hot? Not really sure