My car is a 2001 Galant 4-cylinder with 130K miles. Had the motor mounts replaced, and they failed, then when I had the timing belt/water pump replaced, I had them repaired again. The first time was with aftermarket parts, the second time with OEM parts. I don't hot rod this car. Is there anything the mechanic could be doing - or not doing - to cause this successive failure?
Odd situation. There's four mounts only: one on the transmission, one next to the water pump, and two on the center arm (front and rear engine sides). Mounts can fail due to oil contamination, and of course, rough treatment, which you say you don't do.
The center arm mounts are the most common failures, as these absorb the torque movements of the engine. Multiple failures are unusual, and aftermarket mounts are usually acceptable quality.
The question is now which mount or mounts were replaced. It would be VERY, make that EXTREMELY, unusual to have all mounts fail, and to happen twice in 130K. I would now question the motives or skill of the mechanic. Perhaps there was another noise of clunking that was described as "motor mount" failures.
SOURCE: '01 galant 4 cyl timing belt failure
plastic cover dont mean nothing put timing back in then install belt
SOURCE: My 2003 Galant rides fine, I just replace 2 motor
yes change the timming belt before it cost u another engine when ur belt cuts
SOURCE: 2001 Mitsubishi Galant Motor Mounts Failing
Check the NHTSA comments on AboutAutomobile.com. They have a list of consumer complaints separated by vehicle and also the makers action plan or Recall number.
You can start an investigation with your report too.
Sometimes with repeated failures like yours there are other causes. I am not familiar with your brand, but if you have rear wheel drive, then the transmission mounts can be soft and putting to much of a strain on the motor mounts.
The body or frame can be less rigid than normal and allowing the engine to twist with the Torque from the motor. You may also need to center the engine on its mounts before tightening it down the mounts for good. There may be shims missing to help align the drivetrain.
If this vehicle has a driveshaft, you should feel any vibration in it, but a bad vibration can affect the motor mounts too!
Check the site I mentioned for details.
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