kayakfish247
TYF Newbie
- Joined
- Oct 26, 2024
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- 5
hey guys. So I'm new here. I have a 2003 with a 5.3 Vin z. It's probably thw best running engine I've ever owned. But is has the dreaded p1516 p0120 p0220 which are all with the tac module throttle body and throttle pedal position. I've replace the tac, throttle body, tps on the pedal, cleaned the intake temp sensor replace the mass air sensor, and ran a ground wire from the throttle body to the ecm to tac and to the engine then to the body. Also cleaned the ground junctions at the lower driver's side body and behind the head. It still throws intermittent faults listed above while driving and goes into reduced engine power. I leave a scanner connected and clear the fault and it goes back to normal. Seems to do it alot more when it rains and it's cold outside. Lately it's been doing it at highway speeds. More often when idling. Anyone got any ideas? Pretty much only thing left is an engine harness which I believe is the issue. Thanks ahead of time.
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