Skip the auto shop - Our mechanics make house calls

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?

Need advice from certified mechanic? Get help now!

Over 1000 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. 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: It makes noise when I hit the brake my mechanic thinks it's the transmission

If you cannot locate an authorized independent Mercedes repair facility other than a dealer then I'd recommend going to a dealer for this problem. I would suggest going to a trained Mercedes shop for transmission problems, otherwise you may not...

Q: The car is overheating

The normal opening temperature of the thermostat is between 85c and 102c. Your car is running in the middle and this is good. You should not be overheating as this is the normal operating range for your engine. If...

Q: Engine knock and low engine power

Hi there: The problem with trying to diagnose a ticking issue remotely is the fact that it could be multiple; yet completely different mechanical systems that are causing this issue; ranging from the timing chain being loose, to fuel system...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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...