1990 Mercedes-Benz 300E 4MATIC Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1990 Mercedes-Benz 300E 4MATIC
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1990 Mercedes-Benz 300E 4MATIC ProblemsInsulation Degrades on Engine Wiring Harness and Leaves Conductors Exposed
The engine wiring can degrade because the insulating material falls off leaving the bare wire exposed. This can cause many problems depending on which wires are exposed and what they touch.
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.
Due to age and sun exposure, the interior wood trim cracks and the finish gets a cloudy haze. Replacement if the trim would be the most common solution to the problem.
1990 Mercedes-Benz 300E 4MATIC QuestionsMuffler wont stay up on car (1 answer)
have taken car back to shop about 10 times they keep putting new clamps on muffler but it will only hold it up for a short time i think its the wrong muffler but they say not