Why does my car shake more after replacing engine mounts?

Posted by dopxchxf@reddit | askcarguys | View on Reddit | 14 comments

I took my car to the mechanic ,to change all of the mounts since they are all original and my car is 22 years old (Civic ep2 1.6) and the mechanic ordered the parts trough the dealer and the parts arrived with one wrong mount , transmission mount,to be exact. So he changed only the front 2 ones and said that one on drivers side is good and left that original one in .We ordered a correct tranny mount.

After that I noticed the car is noisier in cabin and it vibrates on idle. What could be the cause and is that normal ,should I wait for the transmission mount to be replaced and see if it continues and the take steps further? Any help or reassurance is welcome ,thx

PS. I have to change my bad 02 sensor so maybe that's also something that contributes to vibration on idle .

Thank you in advance