Car loses power and keeps cutting off

Tiny
JENNIS
  • MEMBER
  • 2003 MERCEDES BENZ C240
  • V6
  • RWD
  • AUTOMATIC
Some times when I put my foot on the brakes the car cuts off I will start it back up and it will have a delay take off. Sometimes when the car loses acceleration power I can press the car petal to the floor and the car will move extremely slow I will have to cut the car off and restart in order for my car to regain speed.
Wednesday, June 24th, 2015 AT 6:11 PM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Strange symptoms, but there is a possible answer to this, you may have a faulty vacuum brake booster, when you push the brake pedal, engine vacuum activated the booster and if there is a leak, the engine will falter as a result, get the booster checked out, this can be done by removing and blocking the booster line and push the brake pedal and see if the engine falters, also test the booster by shutting the engine off and press the brake pedal several times to remove all vacuum, hold the pedal down and start the engine, the brake pedal should sink a little under pressure. Do not drive the can with the booster vacuum disconnected as brake will be very heavy and very poor operation.
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Thursday, June 25th, 2015 AT 4:57 AM

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