Engine - Cold Start Stalling With A/T: Overview

Group
ENGINE ELECTRICAL

Number
92-36-002

Date
JUNE, 1992

Model
1991 EXCEL, SCOUPE



Subject

1.5L ENGINE COLD START STALLING FIELD FIX REPAIR KIT



1991 Excels and Scoupes with automatic transmissions may stall when the transaxle is shifted into gear immediately after starting a cold engine, and the ambient air temperature is 50-70~F. A cold start enrichment field fix kit has been designed to correct this condition. This kit does not affect engine performance at any other time.

It is imperative that you check, and adjust as necessary, the following areas, prior to ordering the repair kit.

1. Perform MUT self-diagnosis:
A. Check for ECU fault codes.
B. Verify proper readings from:
1) Air flow sensor (# 12)
2) Air intake temperature sensor (# 13)
3) Engine coolant temperature sensor (# 21)
4) Barometric pressure sensor (# 25)

2. Check and adjust base idle speed, throttle position sensor, and ignition timing according to the shop manual procedure.

3. Check for vacuum leaks from vacuum hose connections, PCV hose and EGR system.

4. Check automatic transaxle fluid level (must be checked in Neutral, not Park).

The repair kit should only be installed if the engine stalling condition remains after checking all of the items listed above.





The Engine Stall Repair Kit (Part No. 39901-24Q00D) consists of a modulator, extension harness, adapter and two tie straps.