1990 Mercedes-Benz 300SE Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1990 Mercedes-Benz 300SE

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1990 Mercedes-Benz 300SE Problems

Engine Oil and Coolant Leaks Resulting in Fulid Intermix

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.

Bad 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.

Rough 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.

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1990 Mercedes-Benz 300SE Reviews

the design is truly classic.Beautifully solid and quality car.
One of the best Mercedes ever made. This is my third Mercedes, the 1990 300 SE, and I am about to spent $4000 to get a paint job. Car runs great and I have only 160000 miles. The design is truly classic. Elegant lines going to a great front end. Can't wait to see it like new and drive it for the next twenty years.
Beautifully solid and quality car. Every line on its body has purpose, nothing is clumsy or mediocre. Nice extras like all the little map lights, leather everywhere, everything that is wonderful about this car makes up for the things that take alittle extra money or time to maintain. A well maintained 300SE will last a million miles, a neglected one will be a money pit. Make sure you buy one...

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