Q: When I press the gas pedal the engine revs but the car doesn't accelerate. Is this a throttle or transmission issue?

asked by on

Car started hesitating with acceleration at times nothing routine. Then yesterday car started making a noise and the gas pedal no longer accelerated. If I turned off and on it would go slowly and stop again. It starts fine. When put in drive and press on pedal the engine will rev but doesn't always go. Or go very slowly with rpms going high.

My car has 69000 miles.
My car has an automatic transmission.

Hi there. From what you are saying it sounds like there is a failure in the throttle body. When the motor in the throttle body fails, the throttle plate will open and close causing the noise you are hearing. I usually monitor the movement of the throttle to see if this is what is occurring. I then scan the computer for codes to see what comes up. If there are not any codes then the sensors in the throttle body should be monitored to see what is going wrong. If you want to have this lack of throttle response checked, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose and repair your throttle body issue.

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. When I press the gas pedal the engine revs but the car doesn't accelerate. Is this a throttle or transmission issue?

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: Engine revving high at idle - 2013 Infiniti JX35

Hello. You may have to have the computer reprogrammed for the idle to come down. There is a technical bulletin to reprogram the ECM or replace it if needed. Take the vehicle to the dealer to have the reprogramming done....

Q: My truck is giving codes P0171 & P0174

Hi there. If the engine is running lean, then there could be a plugged fuel filter or a faulty fuel pump with loss of pressure. If the pressure is dropping after 20 to 25 minutes, then there could be a...

Q: clicking noise in heating and cooling duct work under dash

The noise you are hearing is likely a temperature or blend door electronic actuator, which will make the clicking noise when the circuit board inside the actuator goes bad. The actuator that is bad will need to be located and...

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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...