Skip the auto shop - Our mechanics make house calls

Q: Motor making a weird noise

asked by on

The car will not go in reverse. I believe it is the vehicle's speed sensor or transmission sensor.

A: Hi. Unfortunately, I doubt this is a sensor...

Hi. Unfortunately, I doubt this is a sensor problem. The transmission control module (TCM) uses input from the vehicle speed sensor (VSS) to regulate line pressure for shift timing and for torque converter clutch (TCC) application. A failed VSS can result in abnormal shifting, lack of TCC application, and loss of high gears. The Transmission range sensor (TR) is used to determine the desired transmission gear and to control mainline pressure. A failed TR can cause harsh shifting engagement or a no start condition. Neither of these items would result in losing only reverse. It sounds like you are having an internal transmission problem. A trained mechanic, such as one from YourMechanic, will be able to inspect the shifting problem further and give you an accurate explanation of what the problem is.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: Slow oil leak

Hi. A temporary engine oil drain plug is just that - temporary. I suggest you have your oil pan and drain plug repaired as soon as possible. As for your shaking, it sounds like your rotors are warped. Warped rotors...

Q: Car not turning over.

The starter is the most likely problem with your no crank condition. I would check for proper power getting to the starter main power cable and also a good signal to the small wire at the starter from the ignition...

Q: Car broke down. Replaced belt and alternator, still doesn't start.

It is always a concerning situation to have your car break down, it is even worse when that happens on the freeway! Luckily, getting your car inspected by a certified mechanic can bring some needed relief with such a situation....

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...