Q: Transmission problem?

asked by on February 13, 2017

My f150 will not shift properly and the overdrive light flashes and abs turned on as soon as I crank the car. The trans fault light also comes on I had the transmission rebuilt but it still seems to be acting up

This may 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.

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

What others are asking

Does the alternator and starter work together

No, they do not work together. The starter motor relies solely on stored energy in the battery to function. It is only after the engine actually starts and runs that the alternator can provide power to vehicle systems as well...

Check hybrid system warning light

Hi there. The Check Hybrid System warning light covers a lot of different systems, ranging from the coolant system, battery and even the drive system (transmission and wheels). As long as your car is not displaying any rough driving symptoms,...

Revs up and out of control

Hello. The throttle cable could be sticking causing the RPMs to increase excessively if the throttle cable is holding the throttle open when it shouldn’t be. There also could be a bad throttle position sensor or idle control unit. These...

Loud roaring sound - 2008 Honda Ridgeline

Hi there. In many cases, the loud noise you're hearing upon start-up is related to a loose drive or serpentine belt. The fact you hear this noise when you turn might indicate that the power steering pulley or drive belt...

I was driving my 05 Escalade today and all of a sudden the engine started revving up. I pulled over, put it in park, then back in

Hello, most of the time this is caused by a failing throttle body. These are a common failure on this vehicle. The accelerator motor or throttle position sensor fail and causes this. The accelerator pedal assembly can also fail causing...

Crank no start

Hey there, thanks for asking about your 2002 Ford Crown Victoria. Burned wires can signify that there has likely been a short somewhere in the electrical system. Often times when this happens, it is quite easy for the car's computer...

i put 91 super in my car and is says use 87 premium now my battery light is on. what is going on? 2009 Kia Sportage

Hello - you did nothing harmful. Your car may have a small level of performance improvement for this tank of fuel, but nothing extraordinary. Long term use of fuel with a higher octane level, MAY lead to increased levels of...

Starter drive flywheel noise

Hey there. It's possible that the teeth on the flywheel (manual transmission) or flexplate (automatic transmission) are worn or banged up sufficiently that the starter drive on the starter won't engage properly. Moving the crankshaft as you mention may realign...

My van is a mazda mpv 2003. Our van was overheating. So we pulled over and all our water from the radiator leaked out.

You need to check the right rear under vehicle to see if your rear a/c heater hose is leaking or broke the control valve. If you did not break a hose you can bypass heater core by connecting the two...

Related articles

How to Join a Car Club
Whether you have an airplane hangar full of classic cars like Jay Leno, or you’re a car enthusiast who enjoys looking at modern sports cars, you might want to consider joining a car club. No matter what type of car...
A Buyer’s Guide to the 2012 Ford Escape
CUVs CUVs (Crossover utility vehicles) are becoming more and more popular these days, as consumers are interested in saving money and buying more eco-friendly vehicles but they still have a lot of people and cargo to move around. CUVs like...
How To Keep Your Car From Overheating
Monitoring your coolant level, turning the A/C off in very hot weather, and regular inspections will help you avoid having an overheating car.