Q: Lack of response when stepping on the gas.

asked by on

When I try to accelerate the engine seems to return to idle and than suddenly accelerate. It does not seem like a brief stumble of the engine but just a complete lack of power. I suspect a problem with the throttle positioning sensor. But beyond that I am stumped.

My car has 22000 miles.
My car has an automatic transmission.

Your engine has a couple sensors that can cause the symptom you talk about.You should have the computer scanned for codes first and then the datastream can be looked at to see if the computer is losing input from the throttle position sensor or the mass airflow sensor. Once this is done then you can isolate the cause to computer and sensor related or check the fuel pressure and it may be fuel pressure related. Have a mechanic like one from YourMechanic.com come and test the vehicle for you.

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. Lack of response when stepping on the gas.

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: Hi - Knocking noise

Hello. If there is a knocking noise then it may have some bad fuel or it may be another failure like an internal engine problem or a bad sensor. I usually start the diagnostic process by scanning the computer for...

Q: 1998 Dodge Dakota Keeps stalling and backfires sometimes

Hi there. You may have a bad or contaminated mass air sensor or a leak in the air tube between the mass air sensor and the throttle body. Have the computer tested for codes and check mass air sensor readings...

Q: Map sensor car won't start up good ?

Your MAP sensor is an important input for your computer. It helps determine the load on the engine to calculate the correct amount of fuel to inject. It sometimes takes a few seconds for the vehicle to realize that the...

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...
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...
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...