Hesitation

DALE POWELL

MEMBER
2013 MERCEDES BENZ C250
2.1L
4 CYL
2WD
AUTOMATIC
63,500 MILES

Had my car go into limp mode, had it checked, changed inlet and outlet turbo hoses, had the dpf flushed gained this hesitation issue had no:1 injector changed as it came up on diagnostics still got the issue, had no:3 injector and fuel filter changed via a Mercedes specialist but still got an hesitation and rough running intermittent, keep on top on services and only use quality fuel get this at about 1500 revs anything above 2000 revs its runs well.

Any ideas thanks

5 Replies

KEN L

MASTER CERTIFIED MECHANIC
48,363 POSTS

Hello,

It sounds like the throttle bore needs to be service or the MAF sensor needs to be replaced. Leave the wires connected to the throttle bore and don't force it open while cleaning. Also does the car have any codes? here are three guides to help us fix the problem:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

and

https://www.2carpros.com/articles/how-to-replace-a-mass-air-flow-sensor-maf

and

https://www.2carpros.com/articles/throttle-actuator-service

Please run down these guides and report back.

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Friday, July 5th, 2019 AT 5:30 PM

DALE POWELL

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3 POSTS

Thank you for your reply. I will try those this weekend.

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Friday, July 5th, 2019 AT 10:50 PM

KEN L

MASTER CERTIFIED MECHANIC
48,363 POSTS

Please let us know what you find. We are interested to see what it is.

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Sunday, July 7th, 2019 AT 12:53 PM

DALE POWELL

MEMBER
3 POSTS

Cleaned the MAP sensor and connectors to it and it seems to have cleared the problem, but I will know more when I go on a longer run in my car tomorrow. Thanks for your input.

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Sunday, July 7th, 2019 AT 1:13 PM

KEN L