Good evening
The vibration is still there and troubleshooting has eliminated the following failures:
- Harmonic balancer.
- Accessories (water/ power steering pumps, A/C compressor, alternator, supercharger, pulleys/tensioners)
- Transmission/drive train.
- Engine/transmission mounts.
I would now troubleshoot the ignition system as suggested by KMT in post #2. Coil pack, plugs, and wires for a miss fire.
If you have not already, check (if equipped) the EGR for carbon blockage and engine connections for vacuum leaks.
Check the canister purge valve solenoid vacuum line and rubber hose connector for damage.
Good Luck.
The vibration is still there and troubleshooting has eliminated the following failures:
- Harmonic balancer.
- Accessories (water/ power steering pumps, A/C compressor, alternator, supercharger, pulleys/tensioners)
- Transmission/drive train.
- Engine/transmission mounts.
I would now troubleshoot the ignition system as suggested by KMT in post #2. Coil pack, plugs, and wires for a miss fire.
If you have not already, check (if equipped) the EGR for carbon blockage and engine connections for vacuum leaks.
Check the canister purge valve solenoid vacuum line and rubber hose connector for damage.
Good Luck.