Skip the auto shop - Our mechanics make house calls

Q: Bad pedal response maes driving sketchy

asked by on

I drive a 2007 Toyota Sienna that has a problem with the automatic transmission. It feels like it can’t keep up with deceleration and when I press the gas pedal to accelerate, nothing happens. It's very frustrating for me to get honked at in traffic! Is this some weird feature or is the transmission broken?

A: Hello! Thank you for writing in with this q...

Hello! Thank you for writing in with this question. Does the Check Engine Light illuminate when this happens? If so, a local mechanic (like those with YourMechanic) can diagnose your transmission system with a scan tool. This problem could be caused by an electrical fault with the throttle position sensor. It could also be a mechanical (clutches, valve body, etc.) or electrical (solenoids, computer, etc.) issue with the transmission. These transmissions (U151E) are not known for their reliability. A quick check that you can do on your own is to pull the transmission dipstick and check the quality of the fluid. If the fluid is bright red and clear, it is okay. If the fluid is shimmery, silver, or smells foul, most likely there is a mechanical issue within the 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

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: What can affect the view from the rearview camera?

While the rearview camera on your car can help provide better safety when you’re backing up, there are several things that can affect the image quality and view. Here’s what you need to know: The view can be dim...

Q: Alarm and keyless entry malfunction, G error code

Hey there, thanks for writing in about your 2007 Mercedes Benz E550. The car alarm in many of the later model Mercedes vehicles has it's own set of small batteries. When these batteries go bad, they will automatically set off the...

Q: Transmission keeps going out - 2007 GMC Yukon XL 1500

Hello. It sounds like you do not have a transmission problem at all. I have seen this same vehicle have electrical issues which will cause the vehicle to stop shifting correctly. If the transmission continues to go out, I would...

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...