Mercedes-Benz 300-Class Questions Maintenance & Repair

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I Have A 300e Mercedes 1989

I was told that it is not a good idea to switch from regular oil to synthetic, was told it might create leaks and damage the engine. Your feedback is appreciated.

15 views with 1 answer (last answer about a week ago)

How Do I Change The Oil On A 1991 Mercedes Benz E300 4matic?

I have had some low oil pressure issues but have added more oil. That isn't my concern really, I am not to familiar with Mercedes and need to know where the oil plug (i think that is what it is call...

14 views with 1 answer (last answer 3 weeks ago)
La Monta Merritt

I Have A 1990 Mercedes Benz300c E Class I Put Am Pm Gasoline I Normally I U...

or shuts off,in the morning it will start then the idle will drop down after its running a little while


How Much To Have Oil Pressure Checked For Mercedes 300e 1993

My oil pressure gauge read zero until I put 1/2 court of oil in it.

Nikki Zukoski

How To Fix An Rpm Problem

looking how to fix an RPM problem in the 1990 Mercedes Benz 300E.

58 views with 1 answer (last answer 2 months ago)

Vibration In My 1991 Mb E300

I have a 1991 mercedes Benz e300 6 cylinder gas with 70,000 miles. I have a problem that we can't seem to correct. When the car is stopped and it in drive it vibrates. I didn't mind at first as the ...

29 views with 6 answers (last answer 2 months ago)

I Have Pulled My Key Out Of My Mersades 300e In Wrong Possition Now Cant Ge...

I have pulled key out in wrong possition now cannot put key back in to unlock

23 views with 1 answer (last answer 3 months ago)

Erratic Idle And Running Rich... Massive Vacuum Leak?

We have a 300 that has a bipolar disorder. It either runs great or it idles high, low and dies and it is running rich - like 10 mpg rich... I replaced the air idle valve and it was better for a wh...

85 views with 1 answer (last answer 3 months ago)

How To Replace In Tank Fuel Pump 300e

i have a chance o buy a 1989 300e with in tank fuel pump problems. need to know if i can replace it by myself?

71 views with 3 answers (last answer 3 months ago)

Voltage Regulator On Benz 300e

Can the voltage regulator on the alternator of my Benz 300E be replaced without removing the alternator?

73 views with 2 answers (last answer 3 months ago)

The Alarm Went Off My 1993 Benz 300e And Now It Just Won't Start

There's nothing when I turn the key. No ignition lights, nothing at all.

79 views with 1 answer (last answer 3 months ago)
Monica Kemper Ballard

Why Would I Be Burning Through Oil Like Crazy

I ran out of diesel the other day and ever since then I have been having to add oil like crazy. Its not leaving a puddle under the car just slings it out while its running looks like from the front be...

12 views with 1 answer (last answer 4 months ago)

Has Anybody Had "smoke" In The Exhaust Of A 300sd 1992, After A Full Engine...

After doing a full engine repair (by a very competent) mechanic, there is a significant amount of "smoking"... and oil comsumsion..?? DOES ANYBODY KNOWS ANY THING ABOUT THIS...?

30 views with 3 answers (last answer 4 months ago)

Starter Change

43 views with 2 answers (last answer 4 months ago)

Idle At Traffic Lights

I have a 1992 Mercedes 300, starts Ok, but can't make it to work without it trying to die out at traffic light. seems to run better later in the day.

33 views with 1 answer (last answer 4 months ago)
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