Seems to vibrate when only in drive - not reverse, not park and not in neutral.
Removed the belt and a little better but not gone.
New water pump, belt, alternator and battery.
Removed and cleaned the throttle body.
Also seems to vibrate more if on a slight incline or level and less if on a decline?
2003 GMC Envoy 130k miles
Check your pulley's. Sounds like one of them are bad and causing movement which where the vibrations coming from. A friend of mine had the same problem, his was the fan pulley. It could be moved inward and outward a little but enough to cause the engine to vibrate. The bearings were going out. check it out and let us know what you come up with.
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Thanks for the info.
I did put the car on jack stands running in Drive and inspected the mounts. I did not see anything out of order. Last week I ran 12oz. of Injector cleaner with a full tank and no change.
The car runs great when driving. It's just at idle in Drive it has a rough idle and vibrates badly.
Do yo know what effect a faulty Cam solenoid would do?
There are no other symptoms except when in low idle and drive.
Thanks,
Seems to vibrate when only in drive - not reverse, not park and not in neutral. Removed the belt and a little better but not gone. New water pump, belt, alternator and battery. Removed and cleaned the throttle body. Also seems to vibrate more if on a slight incline or level and less if on a decline?
I did put the car on jack stands running in Drive and inspected the mounts. I did not see anything out of order. Last week I ran 12oz. of Injector cleaner with a full tank and no change.
The car runs great when driving. It's just at idle in Drive it has a rough idle and vibrates badly.
What effect would a faulty Cam solenoid do?
There are no other symptoms except when in low idle and drive.
2003 GMC Envoy 130k miles
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