Skip the auto shop - Our mechanics make house calls

Q: Car running funny

asked by on

My car has a very high idle and when I stop at a light the car will shake but only when im in drive or reverse. The cars gas pedal has lost alot of power so it is hard to get up hills. To get to speed the car has to build up before fully taking off. Right now the car is in my back yard with the throttle body taken off . What do you think the problem is?

My car has 181000 miles.
My car has an automatic transmission.

Hello - your symptoms suggest that the throttle position sensor has failed. This would not be unusual for a vehicle with your extended mileage. I would recommend having a Car Hesitates during Acceleration Inspection completed by a mobile, professional mechanic, such as one from YourMechanic, to confirm this diagnose, get 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!

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: B18C Integra screeching sometimes during idle and at low rpm 1.5k. Screeching stops on idle when AC is on.

Hi there. If you're talking about the quick tapping noise in the video, it is likely that this is caused by the drive or serpentine belt pulley's being worn out and requiring replacement. If the noise goes away when the...

Q: Steering shakes when I get to 100 kph, also makes a scrubbing noise in front over bumps/driveways 2003 Holden Commodore (VY)

Hi there - sounds like your tires/wheels are out of balance, out of round or you have a bent wheel. The "scrubbing" noise when the front suspension is compressed going over bumps also suggests that the tires are rubbing on...

Q: Rough Idle when first started or when wet

Hello, I sounds like you may have a dirty or faulty idle air control valve. As you know, this monitors and reads the air intake as it enters the engine prior to being mixed with fuel while making adjustments to...

Related articles

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...
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...
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.