My car is not accelerating past 40 mph. xterra nissan v6-...

Q: My car is not accelerating past 40 mph.

asked by on July 17, 2017

My car won't go over 40 mph. The engine will rev up when I press the gas but it will not exceed past the 40 mph. I had troubles earlier this year where my car would shift really hard to move up in gears and jolt the car until finally it stopped accelerating past about 2nd gear. So I had several things replaced such as: the torque converter, valve body and TCM. and now after about 6 months my car will not accelerate past 35-40 mph.

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

Hi there. Typically when the car will not accelerate past 40 MPH, it’s due to either the vehicle being in a limp mode, or other mechanical (fuel or ignition system component) failures. The best way to determine the root source of this problem and save money on unnecessary repairs is to have a professional mechanic come to your location and complete a car is slow to accelerate inspection.

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

Humming noise coming from front end

If the tires are worn irregularly and/or have any internal damage (such as a belt separation) that will create a lot of noise of the type you are hearing. The other possibility is defective wheel bearings (quite common). I would...

The driver side power window will not roll back up

The most common cause of the window will not roll up is caused by the window regulator binding up causing the motor to bind. I would recommend having the motor and regulator checked and replace motor and regulator.

Car shakes and squeaks

Improperly balanced tires usually start to vibrate above 50 miles per hour. This may be fixed simply by having the tires balanced. Have an experienced technician, such as one from YourMechanic, also check the condition of the tires and integrity...

Related articles

A Buyer’s Guide to the 2012 Nissan Sentra
The The 2012 Nissan Sentra is one of the most versatile sedans in its class. Because it has such a wide variety of options available in its four trims, buyers can choose between a bare-bones version at a very affordable...
The Best Used Cars to Buy If You Live in a Hilly Area
Do Do you live in terrain that is hilly? Do your city streets feature plenty of inclines and declines that can be nothing short of treacherous in miserable weather? If so, when it’s time to purchase a car you’re looking...
A Buyer’s Guide to the 2012 Nissan Murano
The The 2012 Nissan Murano is a sleek crossover SUV that has all the modern amenities. It has ample interior space with a luxurious feel, and a driver oriented suspension. If you need a vehicle that can hold passengers and...