Q: Acceleration and loss of power issue

asked by on

My truck doesn't have any power and my overdrive light on
My car has an automatic transmission.

The transmission control module (TCM) helps regulate fuel efficiency and power while storing information about the transmission system in its memory. A faulty transmission control module may cause a delay in acceleration or erratic shifting of gears.

The transmission control module has various sensors such as vehicle speed sensors, wheel speed sensors, throttle position sensors, turbine speed sensor, and transmission fluid temperature sensors that all direct information to it in order for it to perform it’s function.

The TCM also controls the overdrive function of your truck’s transmission. Any of these may also affect the way the transmission control module performs and controls the transmission and the shifting of your truck.

I would suggest having a professional from YourMechanic come to your location to properly diagnose your loss of power problem and service your transmission speed sensor if necessary. Best of luck.

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
  1. Home
  2. Questions
  3. Acceleration and loss of power issue

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

Q: O/D light flashes,car bucks, brakes seizing, and sputtering.

Hi there. Check the transmission and see if there is an oil leak. If the transmission oil is full, then there could be an issue inside the transmission causing the vehicle to sputter as the overdrive clutch is engaged. I...

Q: My mustang keeps dying.

Hey there. There is a fuse in the fuse junction box within the engine fuse box that needs to be checked. It is a 20amp fuse. There are two fuse link wires that go from junction box to the alternator....

Q: Check Engine Light Reappears

The mechanic that did the previous work and did a smoke test was doing the correct thing to detect the leak. The only thing is all the leaks were not identified. Have the vehicle tested again and make sure all...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.