Skip the auto shop - Our mechanics make house calls

Q: RAV4 is so slow to accelerate, one-off jerk when selecting gear

asked by on

2 issues. The jeep sometimes is so slow to accelerate. Other cars outrun it when moving from a state of rest, though it accelerates very well over time . Start off pressure is weak. I have changed the fuel pump & air flow sensor. Second issue is at speeds above 30km/h a jerking is experienced around the driver side when gear is selected automatically. Just a one-off jerk.

A: Hi, thanks for writing in. I would suggest ...

Hi, thanks for writing in. I would suggest checking the throttle position sensor as this is often times the problem with jerking and hesitation. The throttle position sensor monitors the position of your foot on the gas pedal and relays this info to the car's computer telling when to direct the fuel injection system to supply more or less fuel. When this is not working properly, this will cause the jerking that you describe.

If you would like help, consider having an expert automotive technician from YourMechanic come to your home or office to inspect and diagnose this car hesitation for you, and make any repairs (such as replacing the throttle position sensor) for you as needed.

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: Truck runs rough with hesitation.

There are many issues that could cause your truck to run rough. If the check engine light is on (which it most likely is) retrieving the diagnostic trouble codes will provide a place to start diagnosis. A certified technician, such...

Q: The TPS error code P0123 appears only when the AC is on

Hello. The low charge in the A/C system is going to cause the A/C compressor to work harder than it should. This will put a greater load on the engine and may cause your throttle position sensor to give a...

Q: brake sinking but still work.

Hello there, a few different faults can cause the vehicle to have poor brake performance like this. The most common causes would be the brake booster, brake master cylinder, or a brake fluid leak. When a truck has this sort...

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 to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
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...