Skip the auto shop - Our mechanics make house calls

Q: my car will turn over but not cranking up.

asked by on

ok hello. first, thanks for your time, i have a mercedes c320 automatic. i drove it that day from work and stopped at sonic with the car running it just idled rough briefly and went dead. i tried several times to crank it but no luck. finally it cranked but at such a low idle it was barely running. i tried pushing the gas petal but it would not rev up while running at this low idle.it died shortly after and would never crank again but turns over great. i changed the crank sensor but same thing. please help. for my son to go to school.

My car has 200000 miles.
My car has an automatic transmission.

A: The symptoms you described lead me to belie...

The symptoms you described lead me to believe that you have a fuel delivery-related problem. I suggest that you check for fuel pressure at the fuel rail. If pressure is within factory specifications, I would then do a fuel flow test to determine if there is a blockage, like a very dirty fuel filter. Refer to the factory service manual for your vehicle to determine test parameters, pressure, and flow specifications for the exact location of your fuel filter. A certified technician, like one from YourMechanic, will have the tools and knowledge to perform the required tests in order to diagnose your starting issue.

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

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: My car will not turn over some alarm keeps going off and it says immobilizer mode

For this type of work, you will need to call the dealership for help the key instead of the locksmith. They installed your alarm system so they will be able to help you with resetting it or programming your remote...

Q: Car tries to start when plugging up the battery

With an issue like this, you may have several issues. The ignition switch should not allow the connection to be made without the key being in the start position. This means you likely have a starter wire crossed or shorted...

Q: Power seat not moving forward

Hello. It sounds like you may have some problems with the seat on you car. Sometimes the motor that actuates the seat can burn out. I would recommend having a technician from YourMechanic come out and inspect the seat, and...

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...
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...
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...