Skip the auto shop - Our mechanics make house calls

Q: Car won't accelerate past a certain speed

asked by on

When my car hits a certain speed, I can't accelerate, or I begin to lose speed. The car may also shake/jerk at a full stop while my foot is on the brake. These issues happen frequently, but inconsistently.

A: You may be having a problem with the A pila...

You may be having a problem with the A pilar; the sunroof drain could be leaking water into some electrical connections in the driver's side kick panel. The connections for the throttle position pedal sensor are there, which may have taken-on water, causing corrosion, which could be making the sensor give incorrect, erratic readings. I would recommend you have a mechanic, like one from YourMechanic, come and check it for you to see if this is your problem. An engine scan would indicate problems in the system, and would be the best place to find a path to repair.

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・Save up to 30%

Get a quote

What others are asking

Q: The car won't start, it is completely unresponsive, the lights work fine

Have the system checked to see if something is loose or came loose on the accident and is only now showing up as a problem. The air bag module may be shorted causing a problem in the data buss of...

Q: Changed the power steering pump and tensioner but I still have a clicking noise when the car is running.

Hi there. Before changing anything else, remove the serpentine belt and start the engine to see if the noise goes away. If it does, then it definitely is coming from somewhere on the drive belt path. Investigate the pulleys and...

Q: Part hitting underneath my car at high speeds.

Your Camry has a multi-link rear suspension, this means that the rear hub assembly where the rear wheel is attached to has several different suspension arms or "links" attached to it. The vehicle also has a rear sway that is...

Related articles

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...
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...
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.