Skip the auto shop - Our mechanics make house calls

Q: Accelerating problem.

asked by on

While accelerating if I push the pedal all the way to the floor the engine will not rev or speed up in fact it will sometimes slow down. I believe there is a vacuum leak but could that be the cause for it?

My car has 170000 miles.
My car has an automatic transmission.

A: If you are having an acceleration problem t...

If you are having an acceleration problem then you should first have the computer diagnosed to see if the throttle position sensor is not stuck at idle position. The throttle is electronically controlled and will not allow acceleration if there is a failure in the system causing the system to go into fail safe mode. Have the system checked by an expert who can test and diagnose your hesitating acceleration problem.

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

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!

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: High idle problem.

This may be a sign of a vacuum leak. A vacuum leak can be one of the most frustrating and difficult problems to diagnose. High idle speed is a common sign and stalling is another. Confirmation of an engine vacuum...

Q: Does anyone know how to make a Nissan skyline R34 street legal

Unfortunately, I have looked into this as well and it is not possible. You can import the older R32 and put a RB26 engine in it. Due to some people doing some shady stuff with registering R34 chassis, the federal...

Q: Noise coming from front left side of engine.

Hello. Most of the time when this noise occurs from this engine, it is a timing chain problem. To isolate this, I usually remove the engine drive belts and run the engine to see if the noise disappears. If it...

Related articles

How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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...
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...