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Help with engine codes
22Throttle position (TP) sensor – voltage low 44Oxygen sensor (O2S)/heated oxygen sensor (HO2S) – mixture lean 54Fuel pump circuit – voltage low 1994 GMC Sierra SLE K1500 5.7 What could the causes of these codes be? The codes are active after about 5-7 seconds after start up. The truck...- ScoobyJD
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- Replies: 3
- Forum: Engine Performance + Maintenance
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No speedometer or coolant temp gauge
1994 GMC K1500 5.7 So the story starts off like this, the truck was given to my father by his father and now my father gave it to me. I noticed somethings needed to be repaired such as plugs, wires, suspension...etc. The truck had sat for a while and I left the tags on and accidentally let the...- ScoobyJD
- Thread
- Replies: 8
- Forum: Engine Performance + Maintenance
