JCP0521

My truck seems to vibrate at idle and while driving slow,unless I step on the gas and accellerate hard. It's been well maintained, the RPM needle dosen't even move at idle, but the vibration can be felt throughout the seat and steering wheel. Has anyone else had this problem?

J-Ri

How long since a tuneup? If you've had one recently, the timing could be advanced too far.

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'04 Cavalier coupe M/T 2.2 Ecotec
Supercharged 14 PSI boost, charge air cooler, 42# injectors
Tuned with HP Tuners

'86 3/4 ton Silverado
350 V8, 4x4, 4" lift, 1 ton axles swapped, converted to 4 wheel disc
35" BFG Mud Terrain T/As
Shortened to 109.5" wheelbase for those tight trails

http://www.boycottpepsico.com/default.aspx

You see "Fresh oil, loose gravel"; I see "Free undercoating"