Vibration, occasional high idle, and other shenanigans in 2009 auto Yaris hatch

[DarkShadowFox]

get the TRD engine mounts, the stock ones are vibration prone. or make filled mounts with poly.

[firebird1999us]

Originally Posted by DarkShadowFox

get the TRD engine mounts, the stock ones are vibration prone. or make filled mounts with poly.

Do you have a part number for those?

Also did confirm vibration is happening only when the car is in drive and at a stop with AC on. Does not vibrate in neutral with my foot on the brake.

[tmontague]

Originally Posted by DarkShadowFox

get the TRD engine mounts, the stock ones are vibration prone. or make filled mounts with poly.

Poly filled mounts/stiffer will only make the vibration worse.

High idle that you have is completely normal. With more load on the car the vibration is also normal. The 1nz has a relatively low idle for a 4 banger so it will vibrate with high load on it at idle and then the idle will rise slightly and the vibration will go away. This will periodically fluctuate and happen.

[firebird1999us]

Originally Posted by tmontague

Poly filled mounts/stiffer will only make the vibration worse.

High idle that you have is completely normal. With more load on the car the vibration is also normal. The 1nz has a relatively low idle for a 4 banger so it will vibrate with high load on it at idle and then the idle will rise slightly and the vibration will go away. This will periodically fluctuate and happen.

I may have mispoke - the issues are independent. The idle doesn't fluctuate when the vibration happens. The idle remains the same. It's got to be the AC causing it. This is a new development since I swapped the alternator. I just used a Duralast alternator from autozone.