Q: Car has less power when accelerating and louder when accelerating. No Service Engine lights

asked by on July 27, 2017

My car has less accelerating power and louder only when accelerating. I can rev my car up in park and it sounds normal. Any help would be appreciated! Thanks!

My car has 130000 miles.
My car has an automatic transmission.

Slow acceleration has a variety of causes. Fuel injectors can become clogged over time as the tiny passages become clogged. When an injector is clogged it can degrade the performance of the vehicle and the car may accelerate slowly or feel that it does not have enough power. Other symptoms include a rough idle, a vehicle that is hard to start and a decrease in fuel efficiency. A defective fuel pump will not supply enough fuel to the injectors. This can cause the vehicle to accelerate slowly, or even sputter and stall, especially at high speeds. A clogged fuel filter can also restrict the amount of fuel that reaches the injectors. A dirty airflow sensor can cause the wrong data to be be sent to the computer. A slow accelerating car is the result of this incorrect data. It may also trigger the Check Engine Light. Other causes of poor acceleration are vacuum leaks, a defective throttle position sensor and a defective idle air control valve. To get the underlying cause of the problem pinpointed and resolved, you can request an engine diagnostic for slow acceleration and the responding certified mechanic will get this taken care of for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help 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

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

Ac compressor turning on and off

Hello. If the compressor is turning on and off fairly quickly then that means that there is still a pressure issue. It can be caused by low refrigerant or high pressure. It can also be caused by a bad A/C...

How long does it take to install a block heater?

Hi there. Installing a block heater for your vehicle depends on what type of heater you are installing. Some heaters are externally mounted to the bottom of the engine oil pan and other heaters are inside the engine oil pan....

2009 chevy malibu is the fuel filter above the fuel tank because i have looked every place but there

The fuel system does not have a fuel filter but only a fuel strainer on the bottom of the fuel pump. If there is a problem with plugged fuel system then replace strainer.

Related articles

A Buyer’s Guide to the 2012 Nissan Versa
In In the world of subcompact sedans, the Nissan Versa is a serious contender. Not only does it come with a low price tag, but it also includes a lot more features than you’d expect for a subcompact, especially one...
The Best Used Cars to Buy If You're a Farmer
If If you're a farmer, you know that what you need isn’t a used car – it’s a used pickup truck. How else are you going to haul around hay, implements, garden produce, fertilizer, and all the other things you...
A Buyer’s Guide to the 2012 Nissan GT-R
Sporty, Sporty, fast, aggressive – all those words apply to the 2012 Nissan GT-R. This track-inspired car manages to bring racecar-like performance to the street, and it does so in true Nissan style. Key Features It’s tough to choose...