1990 Mercedes-Benz 300CE Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1990 Mercedes-Benz 300CE
Verified by mechanics, reported by drivers like you
Ask a mechanic in our community
Never overpay. Check prices with our estimator
1990 Mercedes-Benz 300CE 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.
1990 Mercedes-Benz 300CE QuestionsTroubleshooting bad exhaust valve (1 answer)
Wont pass smog.
Compression check compressions are 75lbs, 135 lbs, 190lbs, 175lbs, 160lbs and 185 lbs
vehicle has a hard or no shift from 1st to 2nd when cold but will shift normal once warmed up