Q: Accelerating doesn't produce increase in RPM

asked by on

I'm having trouble with my car occasionally not accelerating. Stepping on the accelerator produced no increase of RPM or speed and my mechanic said it read 900 and stayed there. (Fortunately it showed up for him.) When this happens, maximum speed is 25mph. Yesterday, I had been parked for 3 hours and then started it, which did fine, but then pressed on the accelerator and it produced normal RPM. Is the problem an accelerator linkage?

The throttle opening is controlled by the engine computer and if the computer sees a problem in the system it will limit the throttle opening. You need to have the computer tested to see the codes that can cause this. The problem will cause the computer to go into failure management mode and limit the throttle body from going over just above idle until the problem goes away or is fixed. In your case it must be an intermittent problem and will need to be isolated and repaired.

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. Accelerating doesn't produce increase in RPM

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: 2010 Ford Fusion SE with I4 Engine - Throttle Position (TP) and Accelerator Pedal Position (APP) sensors

Since the code reads Throttle Body, the sensor on the throttle body under the hood may be the best place to start. The throttle position sensor measures the angle of the throttle plate and tries to match the effort shown...

Q: Pinking rattles when accelerating

Hello there, thank you for asking about your 2003 BMW 760Li. Spark knock, or pinging, can result from excessive carbon build up. There is a technical service bulletin (TSB) regarding this condition for your vehicle: SI B 11 11 06....

Q: The car idles fine. It revs up but slowly drops RPMs.

Hi there: The idle is controlled by the idle control valve, mass air flow sensor, and throttle body of a fuel injected motor. Any of these components could be dirty, damaged, or have faulty wiring that is causing your engine...

Related articles

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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.