ENGINE MAY EXPERIENCE COLD START STALL (INST. NEW MEMCAL)

SUBJECT: ENGINE MAY EXHIBIT COLD START STALL - INSTALL NEW MEM-CAL

MODELS/YEARS: 1991-92 NINETY EIGHT AND TORONADO/TROFEO AND 1992 EIGHTY EIGHT WITH 3800 (VIN L) ENGINE

Some 1991-92 Ninety Eight and Toronado, and early 1992 Eighty Eights equipped with 3800 T.P.I. (VIN L) engines, may exhibit a condition described as, engine does not stay running on initial cold start.

This calibration was a running change for the 1992 model year. Be sure to check MEM-CAL scanner I.D. as the vehicle may already have this correction.

If this condition is experienced and cannot be repaired by using currently published service diagnostic procedures, it may be necessary to install a new service MEM-CAL after basic engine controls and systems performance have been verified. Parts are currently available from GMSPO.

PARTS INFORMATION:

MEM-CAL MEM-CAL MEM-CAL AXLE RATIO/ SERVICE SCANNER BROADCAST YEAR SERIES EMISSIONS PART NUMBER I.D. NO. CODE ---- ------ ----------- ----------- -------- --------- 1992 Eighty Eight 3.06/FED 16169588 9574 AZKL 1992 Eighty Eight 3.06/FED 16169598 9594 AZKN w/QNX P225/6OR16TIres 1992 Eighty Eight 3.06/CAL 16169593 9584 AZKM 1992 Eighty Eight 3.06/CAL 16169605 9604 AZKP w/QNX P225/6OR16Tires 1992 Eighty Eight 2.84/FED 16169578 9554 AZKJ 1992 Eighty Eight 2.84/CAL 16169583 9564 AZKK 1991-92 Toronado 3.06/FED 16167814 7714 AUWD 1991-92 Toronado 3.06/CAL 16167820 7724 AUWF 1991-92 Ninety Eight 3.06/FED 16169588 9574 AZKL 1992 Ninety Eight 3.06/FED 16169598 9594 AZKN w/QNX P225/6OR16Tires 1991-92 Ninety Eight 3.06/CAL 16169593 9584 AZKM 1992 Ninety Eight 3.06/CAL 16169605 9604 AZKP w/QNX P225/6ORl6Tires 1991-92 Ninety Eight 2.84/FED 16169578 9554 AZKJ 1991-92 Ninety Eight 2.84/CAL 16169583 9564 AZKK

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.