1998 Chevrolet Tahoe Repair Question
Topics covered: Sensor, Fuel pressure, Coolant.
Mileage: 176,399 miles.
Mileage: 176,399 miles.
Asked on August 21, 2011
98 5.7
My truck is burning gas to fast an if i am just sitting there fumes smell start coming into my truck if i pull of slow it has a***** in it while riding slow. i change mass airflow sensor, all 02 sensors spark plugs and the throttle position sensor , because that was the codes that came up, but now this, can you help me out please.
Asked by AMSKR2008Answer
Replied on August 21, 2011
Probable causes of an engine running rich are as follows:
1.Excessive fuel pressure can be cause by restricted fuel return line
2.Defective Oxygen Sensors.
3.Leaking injectors and fuel pressure regulator.
4.Coolant temperature sensor out of calibration.
5.Restricted air intake system.
