Saturn Repair Problems? Ask a Mechanic for Answers ASAP
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What codes are you getting? Did timing chain break/jump while engine was running?
P0171 is the key here, considering you replaced intake this sounds like a worn fuel pump assuming there are no vacuum leaks you missed. Fuel pressure should be at least 50 psi key on engine off, if low replace the pump. Let me know if you have questions or would like replacement instructions for pump, thanks.
Double check for vacuum leaks and see if vehicle runs better with front oxygen sensor unplugged, if so replace. Let me know how it goes or if you run into more questions. Thanks.
Ever get it figured out?
I think problem is fuel pump, they are cheap enough on ebay where it would probably be worth just replacing yourself. Let me know how it goes. Thanks.
Parts stores often barrow out fuel pressure testers for free too. Keep me updated.
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