Idle Speed - Fluctuates When Engine Is Cold
Classification: HA94-007Section: Air Conditioning
Models: 1993-94 J30
Reference: TECHNICAL BULLETIN ITB94-057
Date: October 11, 1994
J30 IDLE SPEED FLUCTUATION BELOW 56°F (AMBIENT)
APPLIED MODEL:
1993-94 J3O
APPLIED VIN:
All prior to JNKAY21D*RM121553
APPLIED DATE:
May, 1994
SERVICE INFORMATION
This Service Bulletin applies if a customer complains that with the Air Conditioning in the "Auto" mode and the vehicle is stopped his/her J30 exhibits fluctuating engine idle speed from approximately 475-550 rpm to 800-900 rpm with the cycling of the air conditioning compressor.
If the A/C refrigerant charge is correct and this incident occurs when the ambient temperature is below 56°F, replace the Auto A/C Control Amplifier with the countermeasure unit P/N 28520-10Y03. The new control amplifier prevents a/c compressor cycling below 15 kph (10 mph).
PARTS INFORMATION
WARRANTY INFORMATION