1991 Mercedes-Benz 300E Questions

Get answers to questions about your 1991 Mercedes-Benz 300E at RepairPal. Find solutions, diagnose problems and get back on the road.

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cruise control wont maintain speed

there is no engine noise at all, 275000 miles. the hudraulic actuator has been replaced but now it seems worse.

my 91 300E seems to run good. I am concerned about the smell of gas . I am due for smog before Mar 8 this year. I am thinking maybe a clogged fuel filter or maybe a new one? I am not to keen when it comes to anything under the hood. I am female and just turned sixty so I could sure use a little help. Thee only other problem I had with this car is the small black rubber square that holds the muffler in place was broken and had to be replaced . I do go for reg oil changes on scheduled dates. So .. any advise on the fuel smell problem

Ran out of gas and battery died added fuel/cleaner new battery

I put a new key switch in an when turn the key everything comes on but when you get to the last turn the motor say nothing what does that mean

If I remove air filter and manually open trotle body no problem

I Have slow take off, but it does get up to speed

light on dash stays on for abs

my ignition is stuck and will not turn

I experienced short circuit on the elec fan wiring near the ABS unit while driving, and burnt some of the ABS cables. Noticed the problem when trying to make a breaking, and felt the braek failed to function just like losing break fluid. Need to know if maybe the ABS unit still can normally funtion after rewiring or have to be repair/replace. Which part of the system that maybe broken?

I hear a knocking sound in the rear left side of the car, only when I accelerate from a dead stop, or when I take a corner at below 20 mph. I don't otherwise hear the sound on a smooth road or over a bump. My car has 188,000. First time I've heard this noise. Never had struts or shocks replaced. Brake inspection was negative. Is this a strut and shock issue?

My parents 300E refuses to start when it's cold out. Looks like the valve isn't opening to let the fuel through to start but only when it's colder outside. Any help would be greatly appreciated.

Air conditioning blower has stopped working. It will come on for a second when you start the car at times. Then cuts off.