Madison Mehlhose
Newbie
1989 RCLB 5.7 TBI 700R4
I have an identical issue with a code 13, O2 sensor triggering the CEL in the same fashion as the original post says. Runs flawlessly otherwise, i just cant stand the sight of that CEL light.
I just did a top end gasket job 2 days ago.
New wires, plugs, TBI rebuilt 8 months ago, new distributor, timing set to 0, nearly everything on the truck is less than a year old.
The only things I haven't replaced or rebuilt are the ESC module, ECM computer, fuel pump, MAP senor, EGR valve, or EGR solenoid. What should I start with?
I don't know my fuel pressure.
All compression is 145-155 psi.
I have an identical issue with a code 13, O2 sensor triggering the CEL in the same fashion as the original post says. Runs flawlessly otherwise, i just cant stand the sight of that CEL light.
I just did a top end gasket job 2 days ago.
New wires, plugs, TBI rebuilt 8 months ago, new distributor, timing set to 0, nearly everything on the truck is less than a year old.
The only things I haven't replaced or rebuilt are the ESC module, ECM computer, fuel pump, MAP senor, EGR valve, or EGR solenoid. What should I start with?
I don't know my fuel pressure.
All compression is 145-155 psi.
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