I have a replaced all 3 Motor Mounts( 2 are vacuum), Laser platinum plugs, New air control Valve, took apart whole Intake manifold and cleaned, including EGR and I have transmission cooler. New Brembo rotors and dealer pads. Timing belt and water pump was done last year and I currently have about 113K miles on it.

The issues with my car is that when I turn on my car and heater/AC right away or even within 5-8 minutes of warming, my car shakes a bit or when I am stopped at a light. When I am driving it does not shake.However when I drive say 15 min and then turn on Heater or AC it does not do that . There is no check engine light.Any ideas? Thanks

 

Wrong sparkplugs for this platform!

Use NGK iridium, pretty pricey ($11ish each), but worth it!

 

Those installed are NGK Double Platinum Plugs OEM and are about $12 each

 

Have your electrical system load tested for free at a local auto parts store.
Could possibly be the alternator or a weak battery ? Check the drive belt tension.

 

Shaking is probably the motor mounts at idle. What brand did you install? Also the iridium plugs are the ones you want.

 

I believe it was Beck Arnley brand. Iridium and Double platinum are more or less same .Iridium has to be changed and the other longer last