Why does engine shake at idle, low RPMs, but will accelerate fine when kicked down?

1993 TOYOTA CAMRY
155,000 MILES
Avatar
HAMPTON77
  • MEMBER
  • 4 POSTS
The car starts fine. Idles rough. I can kick down the gas pedal and accelerate fine. When the car settles to low RPMs at speed it feels jerky. I was able to get this to stop at first by stomping the pedal, but now it will not stop.
Mar 22, 2012 at 1:39 AM
Advertisement
Avatar
JACOBANDNICKOLAS
  • CERTIFIED EXPERT
  • 110,175 POSTS
Check for vacuum leaks and check the IAC
Mar 22, 2012 at 1:39 AM
Avatar
HAMPTON77
  • MEMBER
  • 4 POSTS
what is the IAC?
Mar 22, 2012 at 1:42 AM
Advertisement
Avatar
JACOBANDNICKOLAS
  • CERTIFIED EXPERT
  • 110,175 POSTS
Idle air control valve. It is responsible for the engine idle.
Mar 22, 2012 at 1:46 AM
Avatar
HAMPTON77
  • MEMBER
  • 4 POSTS
I didn't mention that I am not getting a check engine light. Does this mean anything more?
Mar 22, 2012 at 2:07 AM
Avatar
DJCL
  • CERTIFIED EXPERT
  • 767 POSTS
When its idling poor or low try taping on the idle air control motor . Its under the throttle body. Thay are known to stick and do just that.
Mar 30, 2012 at 4:34 PM