LLY: LLY fuel problems

[bombardo_6.6]

Hey everyone im new to the forums and im looking for help with my 2005 Lly. It has 280k and has been loping intermittently at idle.. It just comes and goes. Sometimes if i start the truck and try and drive it has no power.. FRP will be at 1.2k and it can barely move, sometimes it spikes back up and behaves normally, Other times it dies. But when it dies it fires right back up and drives completely normal. The truck has Kory Willis "trans safe" tunes on a dsp5 and a Fass 150 pump. Hopefully someone can give some insight.. Thanks guys


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[TheBac]

Bad FPR would be my guess.

 

[bombardo_6.6]

I forgot to add that i did put a new fpr in it


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[DefiantArms]

Check the wire harness going to the FPR a squirrel are three mine no BS.. Also where did you get the FPR you replaced the bad one with? I know of a few members that got bum ones from Amazon.

 

[bombardo_6.6]

I got it off ebay so that could also be why


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[Bonestock]

Check lift pump psi and make sure its not to high causing your problem.