Skip the auto shop - Our mechanics make house calls

Q: Transmission shifts early

asked by on

When I go WOT sometimes the transmission will shift early going from 1st to second. It does it sometimes not every time and it's only when I'm WOT or close to it. The transmission was rebuilt at around 180000 and haven't had any big problems just want to prevent it from going out again. I'm planning on changing the fluid to see if that does anything plus it's a little over due. Do you think that will stop my problem? Or what should I do?

My car has 220000 miles.
My car has an automatic transmission.

A: Hello. If the fluid is really dirty and if ...

Hello. If the fluid is really dirty and if its integrity is broken down then it can affect the shifting. There are also other parts of the transmission control that can cause this. It can also be caused by a bad sensor on the engine such as the throttle position sensor. Most of the time this sensor is the problem. I usually check the computer for codes first. This will tell me if the computer is seeing any problems. Then I would use my scan tool to monitor the sensor readings, such as the throttle position sensor, to make sure it is correct. Most of the time it will have spots that are not reading correctly that will cause this. If that is also fine then the transmission circuits and pressures will need to be tested to see if this is the result of an internal transmission failure. If you want to have this late shift problem checked, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose and repair this.

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: Heater is running cold, engine light is on, rough idle

Hello there, many faults will cause your heat to blow cold and check engine light on with your 2007 Honda CRV. The first step in diagnosis would be to check what code your car has stored in the computer, this...

Q: truck will not reverse

This could be caused by a shifter linkage mis-adjustment, or possibly internal transmission damage. Unfortunately, YourMechanic does not do transmission repair. I suggest having a reputable local transmission shop perform the repair.

Q: Sugar in my gas tank

Hello. The fuel tank must be drained, removed from the vehicle, rinsed out, and dried to try to remove as much sugar as possible from the tank. The fuel pump and fuel filter should be replaced, and the line between...

Related articles

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...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.