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WHEEL'er-DLR

NAXJA Forum User

Location

bakersfield, ca.

• Aug 28, 2003

• #1

'92 xj w/ 4.0 .........engine dies at idle speed when a/c is on. runs normal when a/c is off. any ideas??

 

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91xjtim

NAXJA Forum User

• Aug 28, 2003

• #2

Wonder if your compressor is bad? My father in law had his compressor go out on his f150, it would cause the engine to shut off, when he turned on the a/c.

 

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AZ Jeff

NAXJA Forum User

Location

Gilbert, Arizona

• Aug 28, 2003

• #3

There is a function built into the ECU that causes the idle speed to be increased when the AC compressor is engaged. It actually steps up the Idle Air Controller (IAC). I wonder if your IAC is bad.....

 

sidriptide

nobody of any consequence

Location

western massachusetts

• Aug 28, 2003

• #4

i second the IAC as the possible culprit..
mike

 

bgcntry72

NAXJA Forum User

Location

Queen Creek, Alcatraz

• Aug 28, 2003

• #5

Agreed.
The plunger in the IAC gets a signal when the AC is kicked on.
$60 part.