What Causes Engine Vibration After Replacing the Timing Belt?

[LeFelicity]

Reasons for engine vibration after replacing the timing belt are as follows: 1. Timing Belt: If there are no issues, check the engine mounts. Replacing the timing belt requires removing an engine mount, and improper installation might be the cause. It’s advisable to recheck the installation. A timing belt misaligned by one tooth can still allow the engine to start and run, but with reduced power, which might not be noticeable to those less familiar with cars. However, this can significantly affect engine data, with many values deviating from normal, requiring professional diagnostic tools for detection. 2. Air Conditioning: The AC imposes a substantial additional load on the engine. When the engine is cold, it already runs less smoothly, and suddenly adding this heavy load can indeed affect its operational stability. This phenomenon becomes more pronounced in colder weather.