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When aircond is on, engine dies

Tiny
MR.YAR.PINE.THU
  • MEMBER
  • 2000 TOYOTA 4RUNNER
  • 100,000 MILES
Toyotar alpharad idling 1000rpm, and then air condition switch on rpm go down to 500rpm and engine dies. Please answer. How to repair?
Sunday, June 10th, 2012 AT 3:38 AM

3 Replies

Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,005 POSTS
BET IT DIES IN "DEFROST MODE" TOO!

USING YOUR FINGERS AND THE ENGINE OFF! SEE IF THE INNERMOST PART OF THE COMPRESSOR PULLEY WILL FREELY TURN. IF IT DOES NOT, THE COMPRESSOR IS LOCKED UP

. OR YOU CAN WATCH THE COMPRESSOR PULLEY WITH THE ENGINE RUNNING, WHILE YOUR BUDDY TURNS ON THE A/C---SEE IF THE PULLEY STOPS TURNING---AGAIN, IF THE PULLEY STOPS, THE COMPRESSOR IS TOAST

WHAT HAPPENS?

THE MEDIC
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Sunday, June 10th, 2012 AT 3:58 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Could be the compressor JF and also an idle up solenoid malfunctioning not increasing the idle speed to compensate for the additional electrical load on the compressor-we wait and see
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Sunday, June 10th, 2012 AT 4:17 AM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Is the MIL indicating? Seems the idle control systenm is not working correctly. The idling speed at operating temperature should be around 700 with or without A/C.

Misfiring or a non performing cylinder can result in that as well.
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Sunday, June 10th, 2012 AT 12:03 PM

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