☰
GET A QUOTE

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

Recommended Services

Transmission Speed Sensor Replacement Get a Quote
Or For Any Other Auto Repairs Get a Quote

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Security light; car won't start
Often times when the ignition is replaced the security system will need to reprogrammed to recognize that a component has been legitimately replaced and that the vehicle is not being stolen. I would ask one of the mechanics at YourMechanic...
Read more
Heater blows out cold air
It is very possible that the coolant level in your 2014 Dodge Dart is low. The symptoms you are describing are almost always caused by a low coolant level. Likewise, low coolant level means there is likely a leak somewhere....
Read more
Steering wheel hard turning on 2007 Volvo V50
According to the service I use to make recommendations by mileage, the change interval for the timing belt (https://www.yourmechanic.com/services/timing-belt-replacement) is 120,000 miles. 100,000 miles is a little early, but it is better to perform services like these earlier rather than...
Read more
Installed new battery but car won't start - 2005 Honda Civic
Your symptoms could be caused by several components. At first, it sounds like the starter is cranking, but isn't powerful enough to turn over the engine. This could be due to a bad electrical connection or faulty starter. Replacing the...
Read more
I need the torque specs for my motor mounts
Hi, thanks for writing in about your 2005 Nissan Altima. The front motor mounts on your Nissan Altima should be torqued to ~65-77ft lbs. As you know, this can be a bit of a tough job in some cases. In...
Read more
My car idles up and down after it warms up--rpms jumping up and down about every second between, about, 1600 and 1900.
This may indicate a faulty fuel pressure regulator (https://www.yourmechanic.com/services/fuel-pressure-regulator-replacement) or dirty fuel injectors causing a fluctuation in the fuel supplied to the motor and thereby causing the RPM's to fluctuate. As you know, when you turn the key to on,...
Read more
2000 jeep grand cherokee laredo seems like it wants to stall or lose power when it starts and is iding or you take off sometimes
This may be a sign of a faulty MAP sensor as the vehicle responds adversely to a load put on the motor (i.e. putting it in gear, making turns (which makes use of the power steering pressure switch) turning on...
Read more
fuel mixture is lean. must be adjusted
I'm guessing that you are getting a P0171 code (https://www.yourmechanic.com/article/p0171-obd-ii-trouble-code-system-too-lean-bank-1-by-andrew-quinn) or something similar. Yes, its telling you that the engine is running too lean, but there is not an adjustment that you can make. When this happens it is because...
Read more

Related articles

What Is Brake Fluid and What Does it Do?
Brake Brake fluid, also known as hydraulic fluid, is responsible for moving the various components of your vehicle’s braking system. The fluid operates under high temperatures and high pressure and, without it, your car or truck would not be able...
Read more
How to Obtain an A3 ASE Study Guide and Practice Test
Automotive technician jobs pay more if you’re ASE certified. Get the study guide and practice test to be a A3 Manual Drive Train & Axles technician.
Read more
How to Troubleshoot a Clicking or Popping Sound in Car Wheels
Car wheels make popping or clicking noises due to faulty CV joints, worn struts or drive belts, loose hubcaps, cupped tires, or loose suspension.
Read more

Browse other content

Cities
Maintenance
Services
Cars