hi, im new to scionlife and I have a question. I have an 06 tc. It has 50k miles, auto. When my car sits in park/neutral it doesnt shake at all, but when the car is in drive it shakes a lot and when i turn the AC on it shakes even more. I changed the spark plugs, cleaned the MAF, cleaned the throttle body, and the shop that took care of the hydrolock replaced some stuff also. When I cleaned the throttle body i drove it and for the first 3 miles it was fine no shaking, but than I got on the freeway and went to 70mph and when I got off freeway it shook again. Car idles between 550-650rpm

my car has a little front end damage that is getting replaced, nothing big at all.

Is there something else I should check/do? I'm going monday to get the new bumper put on and I dont know if the shaking is related to that or to something with the engine.

Thank you.

 

alignment? wheel balance maybe?

 

would that help? my car only shakes when it is at a complete stop?

 

Idle tensioner pulley and belts

 

possible torn motor mounts, you said your car had front end damage maybe a mount got torn when your car got hit.

 

You also mentioned it shakes worse with AC on........that is normal to have more motor noise and shake with AC on,and judging by the miles on car,possible motor mounts wearing down a bit and making it shake more,hard to telll short of riding in the car.

 

Its got Parkinson's.

 

it was a hit and run accident so i dont know how hard my car actually got hit. just left a small bump and pressure lines right under my driver headlight and the bumper tab that connects to the fender broke and it hangs a little lower on the right side. ill ask the mechanics about the motor mount and my dad will check the idle tensioner pulley.

 

if his car has parkinson's, then mine has michael j fox under the hood trying to screw fat chick.

 

I got my car back from the shop and it still shakes. The car will have some small shaking when i throw it in to drive, but after I turn the AC on it shakes and when i turn it off it still shakes. we checked the idle tensioner pulley and belts and its fine. the motor mounts arent torn but they are a little worn. should I have to replace my motor mounts at 50k? Its just weird that my car only shakes when it's in drive but if i put it in neutral or park it stops shaking.

 

do the RPM's bounce around? Maybe there is a vacuum leak somewhere (i've hear that can cause isues like vibrations..i think? lol)

maybe bad MAF sensor or the sensor is dirty? just throwing some ideas out there...

 

I cleaned the MAF sensor, changed spark plugs. ill have to check for vacuum leaks because the rpms bounce from like 525-550 around there.

 

you said it was only when your moving?
did you check the weights on the wheels?

my buddy hit a parking curb and knocked one off his truck which caused the whole thing to shake.

 

I would say it's probably the mounts. Mine has a little shake and it's pretty normal with 4 bangers to do that. My last car I changed the mounts on and it helped quite a bit but its just normal for 4 bangers and the a/c makes it worse. It's just something I got used to.

 

 

its only when im stopped like at a red light.
it just seems strange at 50k I have to change them.

we have an old 95 corolla and we just changed the motormounts first time at 160k.