Skip the auto shop - Our mechanics make house calls

Q: Car is not registering gears and is losing power.

asked by on

while driving down the road my throttle body/power train light came on. My car began to lose power so I pulled over. I then cleaned the throttle body with cleaner with the part still on the car and the light went off. waited a while and the tried to drive my car again it went for a few sec then began losing power again but the light did not come back on. Now when i put it in gear it doesn't automatically register and I have to wait a few seconds. After driving maybe 1/8 of a mile it loses power again. What are your suggestions? I took it to a shop and they stated something inside the transmission so I just need to replace the transmission altogether. I dont feel like that is my only option

My car has 130000 miles.
My car has an automatic transmission.

Hi there. It sounds like an issue with the throttle position sensor on the throttle body. When you cleaned the throttle body, the sensor was probably not functioning correctly and you made it somewhat work. I recommend replacing the throttle position sensor. When your transmission is taking too long to engage, it would be slipping into gear. Check the fluid to the transmission and make sure that it’s full and red in color. If the fluid is full, then the transmission is slipping. I recommend seeking out a professional, such as one from Your Mechanic, to help you diagnose your transmission.

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: My car is jerking from 2nd to 3rd gear and downshifts. Will jerk a little

Hi, thanks for writing in. Your car has what is called a secondary shifter valve or solenoid valve that is operated or directed by the PCM (Powertrain Control Module) which is what controls the drivetrain and transmission. Code P0661 is...

Q: Multiple Issues

The weak battery may be a result of a faulty alternator or voltage regulator. As you may know, the alternator is responsible for charging the battery while the engine runs by generating amperage and recharging the battery while the engine...

Q: Car idles but will not drive (dies when revving engine)

Without additional details as to more specific symptoms, this may require further inspection and diagnosing. However, issues while revving may be a sign of a failing throttle position sensor. The throttle position sensor (TPS) is a sensor used to monitor...

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...
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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...