Q: Car has loss of power when accelerating.

asked by on November 17, 2017

I noticed it on the freeway one day.I was doing about 50 and stepped on the gas to pass someone and it was hardly speeding up.after a couple weeks i started noticing it got worse .starting at a green light it would slowly climb speeds.almost like the transmission is slipping but I'm pretty certain its not the transmission .it shift fine and very smooth all the time.this acceleration problem almost seemed to happen over night .

My car has 136 miles.
My car has an automatic transmission.

Loss of power on acceleration can be due to plugged fuel injectors, faulty oxygen sensors, fuel pump and/or filter, vacuum leaks including that caused by a faulty EGR system, ignition system malfunctions, bad valve timing if the timing belt or chain is worn or skipped, blocked exhaust (e.g., catalytic converter fails or become clogged), a faulty airflow sensor or throttle position sensor, and so forth. To pinpoint the exact case will require an engine loss of power diagnostic. If you request that diagnostic, the certified mechanic will get this resolved 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

I was in a car accident with my 2014 Chevy cruze and I was hit on the rear driver side. My drivers rear tire's rim has a small dent.

Hi there. The light came on for the wheel is spinning on a different path than the reluctor ring can pick up on the wheel speed sensor. The wheel could be bent and causing the wheel hub to be bent...

What does the front fog lamp light mean?

The front fog lamp light is located on your instrument panel. When the front fog lamps are turned on, the front fog lamp light will illuminate.

Engine sputtering and hesitating

Hello. This problem has a number of potential sources. If you have serviced the vehicle on schedule, determine if the sputtering occurred gradually, or happened suddenly. The sputtering could be from a fuel filter, fuel pump ,or fuel pickup problem,...

Related articles

A Buyer’s Guide to the 2012 Chevrolet Tahoe
The The Chevy Tahoe has always been one of the most popular SUVs on the market, and this trend continued in 2012. As always, the vehicle proved to be reliable and powerful, with plenty of space and features that people...
A Buyer’s Guide to the 2012 Chevrolet Volt
Whether Whether you’re concerned about the environment or just want a vehicle that allows you to use less gas, the 2012 Chevrolet Volt might be just right for you. Designed to run entirely via an electric current, this electric hybrid...
How to Buy a Classic Chevy
For experienced car collectors and rookies alike, owning a classic Chevy is a rite of passage. There are multiple decades and styles in which Chevrolet made popular cars. Many of these cars then had a devout following in the years...