MPV LX 4WD V6-3.0L SOHC (1997)
Engine Control Module: Customer Interest
Engine Controls - Hard Cold Engine Starting
M01-006/99
1996-98 MPV - HARD TO START COLD ENGINE
APPLICABLE MODELS
All 1996 MPVs
All 1997-98 MPVs except 2WD California emissions vehicles.
DESCRIPTION
During cold weather conditions when the vehicle has been exposed to an ambient temperature of 0°C (32°F) overnight or several hours, engine is hard to
start. Engine will crank and start at wide open throttle (clear flood mode). This hard to start condition is due to reformulated winter gasoline which easily
vaporizes. It causes an over rich air-fuel ratio when the coolant temperature is approximately O°C (32° F). A modified Powertrain Control Module
(PCM) is available which has a revised calibration to decrease the fuel injection pulse width when exposed to coolant temperatures of O°C (32°F).
Customers having this concern should have their vehicle repaired using the following procedure.
REPAIR PROCEDURE
1.
Verify customer concern.
2.
Replace PCM with a modified part.
NOTE:
PCM is located under passenger floor carpet beneath floor plate.
3.
Verify repair.
PARTS INFORMATION
