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2005 GMC Yukon
Why does vehicle have an intermittent***** when idle / stopped for a red light?
Thursday, July 7th, 2011 AT 7:54 PM
Do you have a check engine light on and when was last tune-up?
Could be caused by one of the following below
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft position sensor
Manifold absolute pressure sensor.
Fuel pressure regulator leaking or defective fuel pump.
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.
Thursday, July 7th, 2011 AT 8:08 PM
No check engine light and last tune up was done end of last summer.
Thursday, July 7th, 2011 AT 9:22 PM
Do what I've suggested and comeback with testing results
Thursday, July 7th, 2011 AT 9:38 PM
to post a reply.
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