1992 Mercedes-Benz 300SD Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1992 Mercedes-Benz 300SD
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1992 Mercedes-Benz 300SD ProblemsBad Switch/Blower Motor Resistor Assembly May Cause Inoperative Heater Blower Motor
Other than a defective motor, a bad switch or blower motor resistor assembly can cause an inoperative heater blower motor.
A refrigerant leak may develop from one or more of the following AC components: AC compressor, hose manifold for the compressor, or the evaporator core. The loss of refrigerant can cause poor AC performance. Our technicians tell us that proper leak diagnoses should be performed in order to determine the cause of any refrigerant loss.
The lower control arm bushings can wear and crack, leading to irregular and premature tire wear. Worn Ball joints can also cause similar tire wear problems. I some cases it may be necessary to replace the lower control arm, including bushings & ball joint to correct this concern.
1992 Mercedes-Benz 300SD QuestionsHow to remove Auxiliary fan assembly and fan blades in Mercedes 1992 300SD (1 answer)
Problems to remove the auxiliary.
when i put the car in reverse the engine revs up and jerks in to reverse. also the ac or heat wnt blow out the vents