2005 GMC Yukon Repair Question
Topics covered: Sensor, Check engine light, Engine.
Mileage: 72,000 miles.
Mileage: 72,000 miles.
Asked on July 7, 2011
Jerking engine
Why does vehicle have an intermittent***** when idle / stopped for a red light?
Asked by Richard RAnswer
Replied on July 7, 2011
Do you have a check engine light on and when was last tune-up??
Could be caused by one of the following below
Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft position sensor
Knock sensor
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.
Note:If it doesn't apply disregard it and keep testing.
Replied on July 7, 2011
No check engine light and last tune up was done end of last summer.
Replied on July 7, 2011
Do what I've suggested and comeback with testing results