Q: Accelerator doesn't respond

asked by on

About a week ago I got stuck in traffic cus my accelerator was not responding, I got a mechanic to check it and it was fine. Next day the same problem, the mechanic serviced the throttle and it was fine. 2 days later it happened again(check engine light on all this while), he changed the throttle and it happened again, we have changed 3 control boards and it seems to be fine only to have the same problem after a few hours? Can anyone help? The error codes read are in relation to the throttle, but the same problem is surfacing with the check engine light on

My car has 52000 miles.
My car has an automatic transmission.

Hi there, Your car’s throttle control system is comprised of a few different components that all work together to control the throttle as you press on the gas pedal. The foot pedal position sensor relays the position of your foot on the pedal to the car’s ECM which then transmits this in the way of a signal to the throttle control actuator. When the gas pedal is depressed, the electrical resistance of the potentiometers inside the pedal sensors change. The control module notes the change in position and assumes the driver wants to go faster. The module then looks at other sensor inputs (such as engine RPM, engine load via the MAP sensor, possibly even vehicle speed and which gear the transmission is in) and calculates how much throttle opening is needed. The module then sends a command to the electric motor on the throttle body to open the throttle a certain amount. In your case it sounds like you may have already changed the control module. I would recommend having a professional from YourMechanic come to your location to take a look at your car to properly diagnose what may be causing your throttle to fail.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Accelerator doesn't respond

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: Took my car in for a tune up and oil change. The next day the rpm's are running high, super loud, and running very hard. What can it be?

Check the throttle plate and position sensor on the engine. When the shop performed a tune-up they could have cleaned up the throttle plate and got the throttle position sensor wet. If the sensor is wet then the engine may...

Q: Ac system leaks

Hi there. This is common with a low pressure side leak. Sometimes when the vacuum test is set for high pressure, the excessive pressure will actually plug a very small hole on the low pressure side. When the AC system...

Q: I just changed oil and I drove less than 200 miles and the dip stik show low oil levels

You may have not filled the oil completely after the oil change and the oil filter was filled. You need to make sure the oil is full by starting and running the engine for a minute after oil change 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...
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...