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Old 01-22-2011, 09:41 PM
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Join Date: Jan 2011
Posts: 2
with 93 400E

I have a 93 Mercedes 400E that was running great until recently. For the past month, the car shakes a little in idle and hesitates when the accelerator is pressed--no matter how far the accelerator is pushed, the rpm's only go up a little without an increase in speed; then after a few seconds, there is abrupt acceleration. When the car goes at a constant speed, the drive is smooth; but as soon as the accelerator is pushed, the same hesitation problem happens.

The weird part is that if the car is turned off then restarted, everything works PERFECTLY even when the engine is still cold... after starting the car for the second time, the car idles at the same rpms but there is no shaking at idle and no hesitation.

Any thoughts?

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Old 01-22-2011, 10:57 PM
Join Date: Mar 2009
Location: Iceland
Posts: 423
Ignition caps and rotors.
600SEL '91
300E 4Matic '88
240D '83
280SE '77
350SE '73
The most complex systems can fail in the simplest way.
Contra verbosus noli contendere verbis, sermo datur cunctis, animi sapientia paucis.

i don't believe in the lord! He's never bought me a Mercedes Benz.
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Old 01-23-2011, 01:51 PM
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Join Date: Jan 2011
Posts: 2
Ok. Will give it a try. Thanks.
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Old 01-23-2011, 01:54 PM
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Join Date: Mar 2007
Location: Hampton Roads, Virginia
Posts: 3,348

14 E250 BlueTEC black
94 E320 Cabriolet Emerald green
85 300TD 4 spd manual dark blue
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Old 01-23-2011, 02:48 PM
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Join Date: Aug 2003
Location: Phoenix
Posts: 3,726
You should always start by getting out (or buildling) your code reader and then reading the fault codes. If there are no codes it's likely the caps and rotors.

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