Im listening to a few people on here and i think my problem is a fuel delivery problem... Its getting worse now it idles fine runs fine but under 35 miles an hour if i let off the gas to shift or just let off the gas it bogs down. MMk my questions what things can cause this as far as fuel delivery? No leaking lines checked it new fuel injectors and fuel pressure regulator, and there are no codes. Now what else do i need to check? its been going on for a year dont fuel pumps just go bad or can they get worse over time?

 

check for error codes

everyone asked you so far - check fuel pressure as it might be your fuel pump. don;t guess and hope, just check it.

as it is apparently relevant to gas pedal release, I'd look at throttle position sensor. remove throttle body and clean it well everywhere you can. remove TPS harness and clean with elctric cleaner. check its output.

 

no codes already checked, cleaned TBI and ran sea foam through it, already replaced TPS will check output on harness though and fuel pressure thanks!!