Q: Gas pedal does not respond very quickly, cruise control acts up too

asked by on

I need help with a problem I am experiencing with my 2006 Hyundai Sonata. The accelerator really hesitates now to deliver any power to the engine, especially when the cruise control is on. This car barely has more than 80,000 miles on it and I did not expect such an odd problem. It really only occurs at highway speed. What can I do about this?

What you are describing sounds to me like the transmission is not down shifting correctly instead of the engine causing the hesitation. I have found two recalls that may fix your problem. The first calls for the engine/transmission module to be reprogrammed to fix the downshifting from high gears to lower gears above 45 mph speeds. The second recall is for the throttle position replacement of the engine. Both of these recalls would have to be verified to pertain to your vehicle. YourMechanic can test your vehicle for the problems you have and verify any recalls or technical service bulletins that may apply or any additional issues you may be having like fuel filters or pressures causing loss of power. A thorough road test and diagnostic check by YourMechanic can help guide you in the right direction.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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!
  1. Home
  2. Questions
  3. Gas pedal does not respond very quickly, cruise control acts up too

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: Ignition wire blown

Hello. If there is no electrical power in the car then most of the time it is caused by a dead battery. The battery should be load tested. If the battery is dead then it may be a battery cable,...

Q: Rear End Differential Fluid

You should only have the differential serviced when you have a leak on the rear cover or an axle seal has leaked and needs replaced. The gear lube should not need replacement unless a problem is present.

Q: Q: Engine swap

Hello. If the engine you are using is an F22 engine It should be able to fit into that Prelude body with little difficulty, assuming the correct mounts, engine accessories, and harness are used. It also appears that the transmission...

Related articles

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...
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...
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.