patterson

my truck tends to run rich when cold and sputter a little when giving it gas and it puts out blaCk smoke, i was waiting for some code to come up shwoing what it was and it finally happened, code 25, 26, 51 come up so i figure my o2 sensor, so i cleaned it with some brake clean i had left and it ran great while the light was off and it didnt stutter, but when doing about 55 for 10 miles the light came back on.

the engine is rebuilt 1000 miles ago, i get horrible gas mileage i got close to 175 on highway trip.


can someone clarify this for me, the 25 and 26 are rich and lean codes which could come from the o2, 51 is a code i dont understand but i dont think its anything bad just happen to come up when i pulled the others

AgRunner06

My Haynes says:

Switch signal

Diagnosis: AC switch ON, neutral start switch OFF, idle switch OFF during diagnosis

Trouble Area: AC switch circuit, AC switch, AC amplifier, TPS circuit, TPS, ECU.

I would go ahead and replace the O2 sensor and check the adjustment on the TPS. You will probably find that it is off.

Good Luck

:bounce2: