1990 Mercedes-Benz 300SE Repair and Maintenance

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

1990 Mercedes-Benz 300SE Problems

Repair 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.

Blend Doors in HVAC May Stop Working Due to Bad Vacuum Actuators

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.

AC hoses may leak

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.

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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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