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 ProblemsRepair Leaks From Head Gasket/Timing Cover Gasket Before Oil and Coolant 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.
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.
A refrigerant leak may develop from one or more of the AC hoses. Proper leak detection procedures should be followed if refrigerant loss in encountered. Replacement of any leaking hoses will we required to restore proper AC operation.
1990 Mercedes-Benz 300SE QuestionsMy MB is a 1988 300se with 14K miles .when timing belt needs replacement? (2 answers)
HOWEVER, THE ["BRAKE-PADS"] ARE LOCKING ON THE ROTORS & WILL NOT RELEASE THEMSELVES. SO, WHAT COULD BE THE CAUSE THIS-PROBLEM?