Recall - Throttle Housing Modification: Overview

Group 13
Fuel System



Bulletin Number
13 06 91 (3440)



Woodcliff Lake, NJ
April 1992
Product Engineering



This Service Information Bulletin supersedes S.I. 13 06 91 (3440) dated December 1991 which should be removed from your S.I. binder. It includes the individual part numbers of the components included in the throttle housing kit.

SUBJECT:
Throttle Housing Recall Campaign No. 91V-219

MODEL:
1991-92 E30 with M42 engine

Situation:
BMW of North America has voluntarily initiated a recall campaign which involves the throttle housing of the affected vehicles.

The 1991-92 318i models are equipped with a crankcase ventilation system that is verified into the intake system of the engine at the bellows boot ahead of the throttle housing.

Under conditions of low ambient temperature (15~F and colder) and a warmed-up engine, water vapor in the warm air from the crankcase night condense and freeze in the colder bellows boot after a period of driving, dislodge and move into the throttle housing, where it could prevent the throttle plate from fully closing when the driver releases the gas pedal, causing a slower than normal deceleration rate and an increase in the idle speed.