Q: SUV will not accelerate sporadically and has no power

asked by on

SUV was running fine until had a regular oil change. After that SUV had sporadic bouts of no acceleration otherwise ran fine. When I mean no acceleration I mean that you could put the pedal to the floor and it would only accelerate much later like a 1-5 minute delay. This car new was to go from 0-60 in under 9 seconds if I read everything correctly. No check engine light ever came on until about 2 weeks ago when it gave a code to the Advance Auto Parts guy saying no Turbo Boost. This is a 2008 Mercedes ML 320 CDI (Diesel) 4 matic and I need it to run because I have to go to work regardless of the weather. It has a turbo diesel system. I have all sensors replaced, I run the best diesel gas, and no one can figure out the problem. Worse now since yesterday I went to start the SUV and it started but would not complete the process to stay running. I think you refer to this as the engine would turn over but that was it. Please help winter weather is coming and I have to work. Thanks much.

My car has 183000 miles.
My car has an automatic transmission.

Hi there:

To be completely honest, there could be multiple issues with your 2008 Mercedes-Benz that are causing the symptoms you’re describing, ranging from something simple like a crankshaft position sensor to the throttle position sensor or complex issues with the turbo on your ML320.

The best way to simplify the process for diagnosing this problem and ensure the right repairs are completed is to have a mobile mechanic from YourMechanic visit you and start with a Check Engine Light inspection. Even if the light is not illuminated, it’s highly possible that error codes are stored in the vehicle’s ECU. This inspection will allow the mechanic to pull those codes and give them a starting point to diagnose the issues and recommend the right repairs.

Was this answer helpful?
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. SUV will not accelerate sporadically and has no power

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: Battery dead after a few days

Thanks for writing in about your Mercedes Benz CLK430. This is a common problem as vehicles get older. This type of fault is called a parasitic draw and occurs when one or more component does not shut off when the...

Q: My ignition and steering wheel got locked. After getting it unlocked, it wont start. System is saying start then an error shows.

Hi there. If you're having problems with the steering wheel and ignition cylinder being locked and the vehicle is having issues starting, the problem may be with the ignition lock cylinder. Sometimes the components inside the ignition lock cylinder can...

Q: How do I replace the airflow sensor on my 1985 olds 98

You definitely want to reset the computer when you make a repair like this. Resetting the computer will allow it to check the new component for proper operation and set a Diagnostic Trouble Code if there is still a problem....

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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...