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WHAT ARE SOME OF THE CAUSES FOR VEHICLE TO*****
1999 GMC Yukon
Between 45-50 mph truck****** while going uphill or overpasses
have the same problem?
Monday, December 5th, 2011 AT 7:58 PM
Do you have a check engine light?
What exactly is it doing?
Monday, December 5th, 2011 AT 8:02 PM
No engine light When taking off when the truck reaches 45-50 it****** then levels off. When going uphill or over bridges it****** or acts as if getting no fuel
Monday, December 5th, 2011 AT 8:31 PM
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.
Monday, December 5th, 2011 AT 11:30 PM
Hattsy, did you get this fixed yet?
Saturday, February 11th, 2012 AT 6:47 AM
to post a reply.
Yes and the local dealer installed all new parts and still does the same thing
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