Stalls at idle?

Tiny
BRYAN2017
  • MEMBER
  • 2005 MERCEDES BENZ C230
  • 1.8L
  • 4 CYL
  • TURBO
  • FWD
  • AUTOMATIC
  • 140 MILES
Rpm idle fluctuates up and down like the engine going to shut off. This happens when the car is stop at stop sign or red lights. When accelerate it is normal?
Tuesday, August 1st, 2017 AT 10:19 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,895 POSTS
Hello,

I would check the rubber boot between the MASS air flow sensor and the super charger. These cars have big problems with them leaking and causing the engine to have the idle fluctuate. It is tough to get to so be ready and use a flashlight.

Please let us know what you find.

Cheers, Ken
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Thursday, August 27th, 2020 AT 6:22 PM

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