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Strange condition when cold and driving slow

Old 04-22-2019, 11:16 AM
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2004 E55 AMG
Strange condition when cold and driving slow

I am have and issue where when the car is cold that when I am driving slowly, approximately 30mph the car goes into a higher gear the engine seems to sound like rev is too high(a few hundred RPM, but it's noticeably loud), the sound is consistent and only quiets down when the car stops. After a few minutes of driving, this condition stops. I have taken the car into a transmission shop and they gave me a an excellent bill of health on the transmission. I have also tried to calibrate the TB, both on the STAR system and using the key and gas peddle, no luck.

This condition started after I replaced the valve cover gaskets.

Any help would be greatly appreciated. FYI, this is a complete stock setup.

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Old 04-22-2019, 12:21 PM
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2005 E55
Sounds like a leak or disconnected hose some where. Check the 1/4" metal line that plugs into the back of the SC on the driver side. It's bolted to the valve cover and sits loosely in a grommet on the back of the SC. Check the T on the bottom of the TB as well as the valve cover sides where hoses connect, also about 1/2 inch hose that connects to the driver side intake after the filter box and before the Y pipe.
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Old 04-22-2019, 01:34 PM
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2007 Mercedes E63 AMG Pano, 2002 Audi A4 1.8t
you'll need someone with STAR to view transmission faults. our computers will log slow shifting, fast shifting, etc and the occurrence. my car transmission did this when it was low on fluid. topping it off resolved this issue for the most part.
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