Hi all it's been a while since on here but I'm currently scratching my head after swapping a 2001 D4FA engine c/w fuel pump into my 2006 D0FA engined pickup. I've swapped all the later type engine loom etc over. but can't get the pump to code in, I thought all vp44 pumps were compatible. had anyone else had issues swapping them from the older type engine system to the newer type. for some reason the relay doesn't produce the live feed when plugged into the D4FA pump but when plugged back into the original pump it lives up. Any idea's? we're currently using a snap on machine to codeine but going to try and borrow IDS Tomorrow if possible and try it with that
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