1990 Mercedes-Benz 560SEC Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1990 Mercedes-Benz 560SEC

1990 Mercedes-Benz 560SEC Problems

Valve Stem Seals Wear and Cause Catalytic Converter Failure

Valve stem seals may wear and cause the engine to burn oil. this can contaminate the catalytic converter and cause it to fail.

Power steering hoses can develop leaks
Power steering hoses and components can develop leaks.
Replace timing chains/guides every 100,000 miles
The timing chain and timing chain guides wear; they should be replaced every 100,000 miles.

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1990 Mercedes-Benz 560SEC Questions

1987 560 SEC, unable to adjust both front seats via switches on the door fuse ok (1 answer)

I checked fuses they are not blown, what should I look for next? Any suggestions? Since both front seats can not be adjusted I am wondering if a wiring issue or module may be out. Where can I go in the car to check?

Is it possible to drop in a modern AMG engine into a 560sec (2 answers)

Is it possible to drop in a modern AMG engine into a 560sec (or any model from 2000 motors kompressor

i want to ask if i can put a new motor in mercedes 560sec from w203 kompressor (1 answer)

or any new engineer from 2004 kompressor to 560sec

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