Skip the auto shop - Our mechanics make house calls

Q: Car starts and idles but does nothing when accelerater pedal is pushed.

asked by on

Car has rough start then idles at around 500 rpm. I press accelerater pedal to the floor nothing happens. Restarted car several times with same result.

My car has 76000 miles.
My car has an automatic transmission.

A: If the vehicle doesn’t move or even increas...

If the vehicle doesn’t move or even increase engine speed afer the user applies the throttle, there may be a problem with the system that communicates throttle input and actuates the motor on the throttle body to open the butterfly valve. The cause to this can be a throttle position sensor failure in either the pedal or on the throttle body. If the check engine light is illuminated, there may be a code stored that will shed some light on the subject. If the engine speed does increase and the vehicle does not move while in gear, the transmission may be slipping. If you’d like, a YourMechanic certified technician can come to your location to inspect this issue with acceleration and suggest any necessary service or 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

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: Navigation screen went black

It sounds like two separate problems. Check your fuses for the radio and navigation. If it is the unit itself that is faulty, there are specialized places that will repair them, or you could replace it with a good used...

Q: Air conditioning stopped working

On some of these vehicles, it may be a simple cycling switch that has failed, or a more serious problem like a failed compressor. The only way to know is to have a thorough inspection of the AC system by...

Q: Car sputtering at 55 MPH while accelerating.

I believe what you are experiencing is a misfire condition. Basically this is when one or more cylinders in your engine stop producing power due to a lack of fuel spark, or oxygen that is necessary for combustion. Generally your...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...