1993 Mercedes-Benz 300E Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1993 Mercedes-Benz 300E

1993 Mercedes-Benz 300E Problems

Failure of EHA valve may cause fuel/engine problems
Fuel leaks, erratic or rough engine operation, and fuel economy issues can be caused by the failure of a fuel system component called the EHA (electro-hydraulic actuator) valve.
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.

Leaks Develop at Differential Seals/Cover on High Mileage/Older Vehicles

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.

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1993 Mercedes-Benz 300E Questions

is there a need to clean the throttle body actuator and how? (1 answer)

is there a drain plug on the gas tank? if not how do i drain the tank? (1 answer)

the car has sat for five years

1991 300e what microprocessor controls the idle air control valve? (1 answer)

I replaced the idle air control valve because when the car is warmed up and I come to a full stop at idle with the car in drive, the idle drops too low, below 500 rpms. A mechanic cleaned the electrical plug which plugs into a component that is also connected to the idle control valve and it wor...

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1993 Mercedes-Benz 300E Reviews

Great car - family owned it forever. Few problems that were not mileage-appropriate.

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