300TE (124.090) L6-3.0L (103.983) (1989)
Air Flow Sensor Plate Position Sensor: Technical Service Bulletins
Engine Does Not Start
07.3-90011
Engine Does Not Start
Engine 102, 103
Revised 7/90
1/90
Cause:
The formed hose between idle speed air valve and air guide housing slipped off because engine back fired.
Remedy:
Install ignition control unit manufactured by Siemens. Test air flow sensor position indicator (see Impulse Display 4 in respective engine section). Check
rest position of air flow sensor plate, center air flow sensor plate. The rubber hoses between air guide housing and idle speed air valve must not be
swollen, replace if necessary. Check formed hose and plastic connection fitting for tight fit, replace if necessary.