Q: Car not accelerating when first started

asked by on February 10, 2016

After my car sits for a long period, it has difficulty accelerating after the first time I stop while driving. The engine does not rev when I step on the gas pedal. I think the transmission is okay, in addition to the fuel pump and filter. I think it could be the throttle body.

Hi there. When you let your car sit for a long period of time the gasoline tends to lose its combustibility. Along with sediment settling in your tank this will cause your vehicle to not perform properly. Also a malfunction in your throttle position. This sensor tells your vehicle how much to open your throttle body in sync with your gas pedal. A blockage in your fuel delivery system is possible from this sediment trying to pass through your fuel lines which are relatively constricted. Have a mechanic sent by YourMechanic come to your residence and diagnose your vehicle’s acceleration issue more accurately.

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

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

Check Engine light and camshaft position sensor code

Hi. If you have a camshaft position sensor code that is coming up, then that is why the Check Engine Light is coming off and on. Most of the time, this is caused by a sensor failure, but it can...

Recently my car started to hesitate when I accelerate from a complete stop.

Hello. There are several problems which could affect poor idle and low speed running. Starting with the misfire indicated by Check Engine codes, bad spark plug coils, especially with your mileage. Check also for oil leaking from the valve cover...

My car will not turnover at all! no spark not even does it try to start up i have replaced the distributer starter spark plugs

If the starter motor is not functioning (that is, if the starter is not engaging the flywheel and turning the engine over), either there is no power to the starter or there is power but the starter itself has failed...

Related articles

How Long Does a Throttle Return Spring Last?
Not Not all vehicles on the road feature an electronic throttle control (ETC), which is also called drive-by-wire. For vehicles that don't offer this system, they have a throttle cable instead that is attached to the accelerator pedal, and runs...
How a Clutch Engages and Disengages
In In your car transmission, the clutch is a device that works to engage and disengage the moving parts of your drive shaft. For purposes of this discussion, we’ll focus on manual transmissions. The moving parts are the transmission input...
What Can Cause a Car to Leak Transmission Fluid?
A A vehicle’s transmission fluid system is closed, which means that the fluid or oil inside can’t escape when things are working properly. Therefore, when vehicles leak transmission fluid, it indicates another problem than just a need to add more...