1993 Mercedes-Benz 300E Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1993 Mercedes-Benz 300E
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1993 Mercedes-Benz 300E ProblemsRough Running Engine Due to Misfire
A rough running motor or lack of power can be caused by a failed distributor cap or rotor, ignition wires (or their resistors), or valve cover gasket leaks. If the valve cover gasket leaks, oil can pool where the ignition wire resistor connects to the spark plug. The resistor can fail and the spark plug may not fire because of a short circuit through the oil.
One or more blend door vacuum actuators may fail resulting in the incorrect output temperature from the HVAC system. Failed actuators will require replacement to restore proper HVAC operation.
1993 Mercedes-Benz 300E Questionsis there a need to clean the throttle body actuator and how? (1 answer)
the car has sat for five years
I replaced the idle air control valve because when the car is warmed up and I come to a full stop at idle with the car in drive, the idle drops too low, below 500 rpms. A mechanic cleaned the electrical plug which plugs into a component that is also connected to the idle control valve and it wor...