Q: Car revving at 2,000 RPM in neutral & park - 2007 Mercedes Benz CLS63 AMG

asked by on

My car has been revving at 2,000 RPM in the gears Neutral and Park. Once I have shifted into gear, it drops to a better normal 1,000 RPMs. The dealership had told me that they would replace the engine mounts. They also have done some maintenance on my car in the past and have recommended a brake flush, spark plug replacement, gas filter replacement, and service a which is something to do with the brakes. The information was rather uncertain and I’m not sure what to believe or trust. There price of over 2,000 is staggering. What do you think the RPM problem might be? Thank you.

Hi there, thanks for writing in. There is a technical bulletin that covers a leaking intake manifold in front of and below the throttle body of the manifold. The car could have a deformed intake manifold that would need to be replaced. This may be reason for the broken motor mounts and fouling spark plugs besides the high idle. If you would like a second opinion on this, a qualified professional from YourMechanic can examine the high idling issue in person to verify repairs that are needed.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Car revving at 2,000 RPM in neutral & park - 2007 Mercedes Benz CLS63 AMG

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Clutch vs. Master/Slave Cylinder?

This sounds like you have a problem with the clutch. The clutch is slipping causing the rpm to rev high and the car to not move. The clutch disc can be slipping due to it being worn or fluid getting...

Q: Car revs when turning the key

Hello - yes, you probably need a new throttle position sensor. The symptoms you describe are classic throttle position sensor failure symptoms. I would recommend having a Throttle Position Sensor Replacement Service completed by a mobile, professional mechanic, such as...

Q: Toyota Matrix shifts from drive to 2nd, skipping 1st

The manufacturer has a technical service bulletin (TSB) for harsh shifting intermittent and calls for the engine control module to be replaced and programmed to work for your vehicle. You may have code P2716 in memory if your vehicle is...

Related articles

How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...