At the first sign of problems, it’s critical to bring your car to a Mercedes specialist to properly diagnose the issue and get the problem fixed right away. It's a catch-22: you rarely see a valid CPS code because when the sensor dies (which is usually all at once, not gradually) the car shuts down before the code can be set. In the Youtube I linked below, the one Solenoid came out easily with the Valve Timing Housing (VTH) still in place by just removing the two screws. While the faulty solenoid won’t likely cause engine oil to become contaminated, the reverse may be true. The VVT system engages to deliver extra power to the vehicle when it’s traveling under added stress, such as when it is carrying a larger, heavier load, or when traveling uphill.

When voltage is applied to the electromagnet, the metal rod is pushed or pulled within the coils and that motion can be used to actuate a valve, flip a switch, engage a gear, etc. Failure usually occurs well before the 100,000 mile mark, which is generally too soon for this part to require replacement. I've read rough idles can happen because of a vacuum leak in the air pipe, I wonder if I have something like this, whether its connected to the breather and can cause unexpected acceleration close to stop. The over revving came back recently - mostly at 1st gear - driving through the parking lot feels like the engine is accelerating even at times when I brake. With the decision "Only accept essential cookies" we will respect your privacy and will not set cookies that aren't necessary for the operation of the site.

But if you would service your engine I don't think (hope) the sprockets shouldn't be serviced/replaced. If you need immediate access there is the option to become a 'Full Member' by purchasing a subscription. When the variable valve timing system cannot function properly, and valves open and close at improper times. After carefully reading the manufacturer's notice, I saw that the manufacturer recommended that the car not be driven until the repair was completed.

There is no law preventing you from using regular instead of premium gasoline, but the laws of physics will cause your engine to perform a bit more poorly. IMPORTANT NOTE: Kindly Be Aware that This Part May Fit Some Other Vehicles Make/Models/Engine Types, Please Refer To Compatibility For Further Information As Variants Are Common In Vehicles And Compatibility Is For Guidance Purpose Only. With 1,000 new parts released each year their range continues to grow, allowing us to offer INA parts for many of the most popular car makes and models in the UK.Sometimes driving on a parking lot at low speeds when I stop adding gas but the car rolls on it for 2-3 more seconds before dropping gas and starting to stop with the engine like it should? I've replaced the exhaust solenoid, got rid of the engine trying to stall on traffic lights, much better idle now, no overcompensating that stalling very low idle as well. For the whole week it was fine, today started again having high revs on idle just on 1st gear at traffic lights or during low speeds.