CLK-Class (W208) 1998-2002: CLK 200, CLK 230K, CLK 320, CLK 430 [Coupes & Cabriolets]

need help figuring out problem

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Old Aug 29, 2004 | 04:53 PM
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need help figuring out problem

I need some help trying to figure out a problem Im having with my CLK.

When im driving at a constant speed the rpm's will drop about 200-300 and the car rumbles (like you are driving over a rumble strip) and a few seconds later the rpm's go back up to normal and the cars fine. It does it at 25 and also higher speeds like 50-60. Sometimes it only does it once or twice and other times it will do it every few minutes for awhile.

Car is an '02 320 with 40k on it.

Any thoughts are appreciated-
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Old Aug 29, 2004 | 08:20 PM
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2002 Clk 55 Amg
Dos it happen when you go up hill???
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Old Aug 29, 2004 | 08:39 PM
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Originally Posted by Hot-Clk
Dos it happen when you go up hill???
no, it happens on flat open roads going a constant speed
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Old Aug 29, 2004 | 10:56 PM
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Hmmm... Do you have any other problems while driving? Any hiccups while accelerating? Is the car shifting gears when this happens?
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Old Aug 29, 2004 | 11:03 PM
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all the abs and other brake lights came on with it one time and this problem was blamed on that.

Brakes fixed and now this problem is happening more and more.

I am not sure whether the car is upshifting for a second and then going back into gear. Its more like in a stick if you half put the clutch in and then let it back out.

Other than that car runs perfectly
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Old Aug 30, 2004 | 04:15 PM
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E550 Coupe
mine did that once or twice. hardly ever happens. its like you said - putting it halfway into a lower gear then switching back to normal
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Old Sep 2, 2004 | 02:34 PM
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EFF YOU JACKIE
Most likely the (MAS) Air Sensor. I believe there was a recall on them.
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Old Sep 6, 2004 | 10:30 PM
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thanks for the input- going to the dealer when I get time which is hopefully soon
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