ROUGH/LOW IDLE OR W/S FOGGING A/C FAN RELAY

MODELS AFFECTED: 1982 AND 1983 CIMARRONS

The information supersedes Serviceman Bulletin I-83-100, Group 1, Number 15, which should be destroyed.

Low engine speed and rough idle can be caused by high A/C compressor loads due to high head pressures without cooling fan operation while in the defrost mode. This condition can be corrected by installing an additional engine coolant fan relay (P/N 14078902) to operate the coolant fan in the defrost mode. The relay should be installed on the cowl, adjacent to the pressure cycling switch. It should be connected as shown below using connector P/N 12010015.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.