When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Hello everyone.
I have an issue with my 2009 ML320 OM642.
142k miles,
EGR, DPF, Intake Flaps etc etc... all that was deleted 2 years ago.
The issue is that it has a surging problem under load. I don't really know how to describe the problem in words. (i could reproduce the sound with my mouth ) but the engine basically does not increase the RPMs smoothly; instead, it has a blitz of power and a blitz of no power(it almost feels like the turbo actuator moves up and down up and down for as long as I accelerate. This can be felt through the whole car, It can be heard from the engine and it can be slightly seen on the rpm gauge. I will post videos and pictures of the numbers and graphs I get on my scan tools. Please help me because I am desperate already... I have no idea where to check anymore. Any opinion will be greatly appreciated. Thank you!!!
Hopefully you are using a scanner, but what codes have you found in all modules? When you post them you must indicate which module they were stored in.
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.
) but the engine basically does not increase the RPMs smoothly; instead, it has a blitz of power and a blitz of no power(it almost feels like the turbo actuator moves up and down up and down for as long as I accelerate. This can be felt through the whole car, It can be heard from the engine and it can be slightly seen on the rpm gauge. I will post videos and pictures of the numbers and graphs I get on my scan tools. Please help me because I am desperate already... I have no idea where to check anymore. Any opinion will be greatly appreciated. Thank you!!! 
