E-Class (W124) 1984-1995: E 260, E 300, E 320, E 420, E 500 (Includes CE, T, TD models)

Do You Know The Answer? W-124 1986 300e

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Old 10-09-2009, 03:51 AM
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1986 W124 300e
Do You Know The Answer? W-124 1986 300e

I have just purchased a 1986 Mercedes 300e W124 3.0 liter with 100k miles and I've recently encountered a problem - when i press the gas pedal to speed up quickly (i.e. on an on-ramp to a highway), the car delays before "accelerating". The acceleration itself is very jerky, and the only way i can fix it is by taking my foot off the gas, and accelerating slowly. It only seems to struggle when I hit the gas hard. I was thinking about getting the carburetor professionally cleaned..what do you think?? please help!!!!
Old 10-09-2009, 04:59 AM
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85 euro w124 300d non turbo black on black......coming soon hx35 turbo intercooler
Welcome to the forum! First you do not have a carb.Its fuel inj. You need to read this LINK It sounds like its ur coolent sensor (the one that communicates with the computer) But read the link it could be a few things.
Old 10-09-2009, 07:49 AM
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1986 W124 300e
Hey bro thanks for the help! No carb?? Then where is the ecu and why is my air filter enclosed? Now I'm confused r u sure?
Old 10-09-2009, 07:56 AM
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95' AMG SeeThreeSix
epowers is half correct, fuel injection really means mechanical fuel injection. Also known as CIS (constant injection stream) or K/KE-Jetronic. Has this problem slowly become obvious or suddenly out of the blue?

ECU is behind the battery.
Old 10-09-2009, 11:42 AM
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Welcome
Don't title your questions so vaguely. Please state the problem in the title in order to facilitate searching.
Fill out your profile

In order to eliminate simple things its best to establish a baseline tune up; new plugs, wires, cap, rotor, fuel filter, air filter.

I suspect your wires or cap may be at fault, but we will never know unless that stuff is changed/ recently installed.
Old 10-09-2009, 07:52 PM
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1986 W124 300e
Hey thanks for the help guys, sorry it was such a vague title but i posted the other day with the actuall problem and got little help..thanks again
Old 10-10-2009, 02:45 PM
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Mercedes Benz
I would replace the fuel filter.
Cheers,

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