Skip the auto shop - Our mechanics make house calls

Q: Car revs when turning the key

asked by on

Hi i have a Hyundai excel 1999 manual the problem i have with it is i turn my car on then str8 away its revving without out me doin it with the accelerator or while driving on the road its hesitating 2 drive and jerks while in 3rd 4th 5th gear would i need a new throttle position sensor?
My car has a manual transmission.

Hello - yes, you probably need a new throttle position sensor. The symptoms you describe are classic throttle position sensor failure symptoms. I would recommend having a Throttle Position Sensor Replacement Service completed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.

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!
  1. Home
  2. Questions
  3. Car revs when turning the key

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: Poor acceleration and car jerking when going going on a mild/steep slope or carrying more people

Hi there, thanks for writing in. It sounds like you might be experiencing a problem with your clutch as opposed to the engine. Typically, around 130,000 miles, the clutch of a manual transmission will begin to develop problems engaging fully....

Q: Clutch slipping on manual transmission

Unfortunately, the Mazda clutch is a hydraulic system that has no adjustments. If the clutch is slipping the clutch disc is most likely either worn or the pressure plate is faulty. The clutch system will need to be inspected and...

Q: Dying when idling too long and whining noise while revving

Hey there. In many cases, whistling or whining noises can come from the belt drive system or a vacuum leak under the hood. Is your vehicle maintenance and tune-up schedule up to date? You may want to check the idle...

Related articles

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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...