Engine - Driveability Problems
86pontiac12Number 87-6(Gasoline)-12 Date 12/86
Subject: DRIVEABILITY (STALLS, SAGS, HESITATIONS)
1987 6000 MODELS WITH LR8 2.5L ENGINE (VIN CODE R) MD9 (THM 125C) AUTOMATIC TRANSMISSION, AND F17 2.84 TRANSAXLE
Some 1987 6000 models equipped with 2.5L LR8 engines, automatic transmissions, and 2.84 transaxle may exhibit driveability conditions such as idle shake, sag on a light throttle application from a standing start, when engine is at operating temperature, and a stall on the same light throttle application if done immediately after a cold start at ambient temperatures 80 to 85 degrees Fahrenheit.
After published diagnostic procedures have been performed and the conditions have not been improved, a new service PROM, P/N 16072828 should be installed.
Use applicable labor time for PROM replacement.