[GuJu MaN 89]

ok i have a 97 toyota corolla.
when its idle in D, and P, i get a crazy rough idle, everything starts shaking.
i took it to my mechanic (which is a idiot) and he said it was the engine mounts. so i got them replaced and still same problem. then some people said it was the air filter or MAF sensor. replaced air filter with a K&N, got a new MAF sensor.

any more ideas what could be causing this rough idle?

 

[SR5_4WD]

I wanna say Drivetrain issues, but don't hold me to it.

 

[canadianae92]

My dads 1990 Corolla sedan is like that it idles rough and the car shakes like crazy but its been doing it for a long time, cars arn't perfect if everythings alright then its probably something thats kinda dumb( I mean if the engine sounds fine and idles at the right rpms doesn't make any strange sounds ect....

 

[GuJu MaN 89]

http://auto.consumerguide.com/Auto/Used/reviews/full/index.cfm/id/2106/act/usedcarreviewreliability/

on ther it says:

Rough idle: Poor engine performance accompanied by a check-engine light is often due to failure of the vacuum-switching valve for the EGR system. (1994-97).

Could that be it? i dont have a check engine light

 

[canadianae92]

Uh I can't say that anything major is wrong with ur engine if the light ain't on like it'd come on if you lost major oil presure right? But that could be it maybe?