Q: Transmission problem?

asked by on February 25, 2017

Well the car jerks sometimes when changing gear. More when putting in reverse. There's also a sort of thumping on the passenger side front when the car is moving slowly or turning right. PLEASE HELP!!

My car has 147000 miles.
My car has an automatic transmission.

This kind of reaction is often a sign of low transmission fluid or a faulty transmission control solenoid. As you know, automatic transmissions use pressurized hydraulic fluid to change gears. Every time a gear change is required, the car’s computer activates a transmission solenoid, which directs transmission fluid into the valve body to engage the correct gear. When this is faulty or not working properly, this can cause a delay in gear shifting or in some cases cause the car to not shift at all. This type of problem is amplified any time the transmission is low on fluid creating a drop in hydraulic pressure.

This may also indicate a failing speed sensor. The transmission speed sensor is a magnetic sensor that provides information related to the speed of the input and output shafts in the transmission, allowing the transmission to shift smoothly. The sensor counts the internal number of revolutions of the transmission and transmits that information to the transmission control unit, where the data is used to determine the rotational speed. As the rotation increases, the control unit directs the changing of gears. When this is not working properly, this may cause the transmission to shift erratically or in some cases not at all. I would recommend having an expert from YourMechanic come to your location to take the car for a test drive to more specifically determine the cause for this.

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

When I first drive my car, it stutters

Hello. If the vehicle has a hard time staying running when it is first started then it may have one of several issues. Most of the time this is the result of a leaking fuel injector or a failing fuel...

A noise specific to the right front end

Hi there. Your Lincoln Town Car has something in the front related to the suspension called a sway bar. When you drive over bumps on potholes this helps to support the suspension as it does its job dampening the bump....

Engine shield hanging off

The cover gets torn off by parking stops, and hitting road debris. A technician would need to inspect it to see if it can be reattached, or if it needs to be replaced. I recommend having a mechanic, such as...

Related articles

Lincoln Certified Pre-Owned (CPO) Car Program
Lincoln certified pre-owned cars are under 7 years old, have less than 60,000 miles, and come with a 6 year or 100,000 miles comprehensive warranty.
A Buyer's Guide to the 2012 Lincoln MKZ Hybrid
When When it comes to performance, there’s no argument: the 2012 Lincoln MKZ Hybrid is the leader in its class. Fortunately, it brings a number of other amazing features to the table too. Key Features Speaking of performance, let’s start...
A Buyer's Guide to the 2012 Lincoln MKX
As As far as midsize SUVs go, the 2012 Lincoln MKX is one of your best options out there. Considering its price, Lincoln packed this vehicle with a ton of power and luxury. Although it bears a strong resemblance to...