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1998 Toyota Corolla Vibrartion on idle when air cooler is o

Tiny
SAROAR
  • MEMBER
  • 1998 TOYOTA COROLLA
  • V12
  • 2WD
  • AUTOMATIC
  • 120,000 MILES
After running for about 1 hour with A/C ON, the car creates huge vibration when it stays idle on brake. Sometimes, engine stops with knocking. If A/C is off then the problem does not appear.
Wednesday, July 8th, 2009 AT 1:22 PM

3 Replies

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
Most likely the AC clutch is bad or the AC compressor bearing. In most cases the AC clutch can be changed, but if a bearing the compressor would have to be changed.
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Thursday, July 9th, 2009 AT 9:55 AM
Tiny
SAROAR
  • MEMBER
  • 2 POSTS
Thanks for your response.

I like to add more on this problem. The vibration problem starts earlier if the steering is fully turned on brake.
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Thursday, July 9th, 2009 AT 1:05 PM
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
It sounds like the serpentine belt is being stressed by the AC clutch/bearing.

The fact that it only does it when AC is commanded, points directly to the AC compressor.
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Friday, July 10th, 2009 AT 9:22 AM

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