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Car: 1993 Geo Prism, 172,000miles, Automatic, All Original
Car ran well for 168,000miles then the engine seemingly developed a strong vibration. As strange as this may sound, the car runs more smoothly after running it then turning off the ignition and letting it sit for a couple of hours or so. When it is started up again that second time it runs much better although not quite at 100%. However, if allowed to sit overnight or through a workday the vibration is very strong.
It seems that the cold weather has something to do with the problem but it may be that the problem is getting worse over time and that cold weather is simply coincidental.
Engine mounts and wiring have been checked an excluded(?) as the cause.
Any suggestions would be greatly appreciated.
Car ran well for 168,000miles then the engine seemingly developed a strong vibration. As strange as this may sound, the car runs more smoothly after running it then turning off the ignition and letting it sit for a couple of hours or so. When it is started up again that second time it runs much better although not quite at 100%. However, if allowed to sit overnight or through a workday the vibration is very strong.
It seems that the cold weather has something to do with the problem but it may be that the problem is getting worse over time and that cold weather is simply coincidental.
Engine mounts and wiring have been checked an excluded(?) as the cause.
Any suggestions would be greatly appreciated.