BMW 318 1991: VEHICLE SPEED CONTROL
NHTSA Campaign ID Number: 91V219000
| Make | Model | Year |
|---|---|---|
| BMW | 318 | 1991 |
| Date Owners Notified | Date Received by ODI | Date Added to Database |
| 1992-02-07 | 1991-12-17 | 1991-12-20 |
Production Dates: 1990-06-01 - 1991-11-01
Manufacturers Involved: BMW of North America, LLC
Component: VEHICLE SPEED CONTROL
Potential Number Of Units Affected: 15200
Report Initiator: MFR MFR Report
THE CRANKCASE VENTILATION SYSTEM, VENTED INTO THE INTAKE TRACT OF THE ENGINE AT THE BELLOWS BOOT AHEAD OF THE THROTTLE HOUSING, ALLOWS WARM WATER VAPOR FROM THE CRANKCASE VENT TO CONDENSE AND FREEZE IN THE COLDER BELLOWS BOOT WHEN THE AMBIENT AIR TEMPERATURE IS 15 DEGREES FAHRENHEIT OR LESS. THE BUILD UP OF ICE CAN DISLODGE AND MOVE INTO THE THROTTLE HOUSING, PREVENTING THE THROTTLE PLATE FROM FULLY CLOSING WHEN THE DRIVER RELEASES THE GAS PEDAL.
IF THE THROTTLE PLATE IS PREVENTED FROM CLOSING, THEREIS AN INCREASE IN IDLE SPEED AS WELL AS SLOWER THAN NORMAL DECELERATION, WHICHOCCURS WITHOUT PRIOR WARNING AND COULD RESULT IN AN ACCIDENT.
REPLACE THE THROTTLE HOUSING WITH A VERSION CONTAINING A MODIFIED HEATING SYSTEM ALONG WITH REROUTING OF THE CVS HOSE. THIS WILL PREVENT ICE BUILD-UP IN THE INTAKE TRACT.
SYSTEM: THROTTLE LINKAGES AND CONTROL.VEHICLE DESCRIPTION: PASSENGER VEHICLES.
