Internal and External engine oil & coolant leaks can develop from the head gasket and/or timing cover gasket; these leaks should be repaired before the engine oil and coolant intermix which can result in severe engine damage.
Resources for the Repair and Maintenance of your 1993 Mercedes-Benz 300E 4MATIC
1993 Mercedes-Benz 300E 4MATIC
1993 Mercedes-Benz 300E 4MATIC Problems
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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 cir...
The bushings for the shifter lever wear out to the point where they break and fall out. This causes excessive movement (loose feel) in the shifter lever and a clanging-type noise when changing gears.
The electronic throttle assembly may suffer an electrical failure. It is often cheaper to send the valve to a service center for repair that to purchase a new part.
Due to wear of mechanical parts in the control head, the buttons on temperature control assemblies work erratically or not at all. These control heads need to be replaced for this concern or when the display screen starts to fade out.
1993 Mercedes-Benz 300E 4MATIC Questions and Answers
It has a switch in the engine compartment that is labeled 1 and 2, and the 4matic light on the dashboard is on. I have tried both positions with no changes on the engine compartment switch. It was ...