1990 Mercedes-Benz 300SEL Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1990 Mercedes-Benz 300SEL
Verified by mechanics, reported by drivers like you
Ask a mechanic in our community
Never overpay. Check prices with our estimator
1990 Mercedes-Benz 300SEL Problems"No start" Caused by Failed Fuel Pump/Relay
The fuel pump and/or fuel pump relay can fail, causing the car to crank over but not start. Proper diagnoses will be necessary to confirm if the pump or relay is at fault.
Leaks may develop from the differential seals and/or cover on older or high mileage vehicles. Our technicians recommend a complete reseal of the differential unit when these leaks are addressed.
1990 Mercedes-Benz 300SEL QuestionsNo owners manual ... Does this car have a3 or 4 speed transmission? (1 answer)
What transmission is in this car 3 speed or 4 speed?
And if so is it better to buy a brand new one or is getting a rebuilt one just as good thanks and I look forward to my answer