BLAZER K1500 RUNNING RICH

1993 Chevrolet Trailblazer

Tiny

Bowse

May, 12, 2007 AT 9:53 AM

My Blazer, 4WD 180K miles, is running rich judging by heavy soot on the tailpipes and MPG of 10-11. Could it be a bad O2 sensor? It has throttle body injection, catalyst status unknown(it has one still)

Any ideas?


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Tiny

rasmataz

May, 14, 2007 AT 3:25 AM

At that mileage could be the 02 sensor, coolant temperature sensor-leaking injectors

Won't hurt if you have the fuel pressure check

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