Skip the auto shop - Our mechanics make house calls

Q: Truck idling higher than normal.

asked by on

I recently had the throttle position sensor replaced. Now, I notice the engine is idling a little higher than normal when in park or neutral.

A: I would recommend taking the vehicle back t...

I would recommend taking the vehicle back to the facility that replaced your TPS and ensure that the throttle body gasket was replaced as well. If the gasket was not replaced a vacuum leak may exist near your throttle body causing your idle speed to be incorrect. If the throttle body gasket was replaced properly, inquire about if the reset procedure for the TPS was performed. If this reset procedure is not performed it can also cause your exact symptoms. Your throttle body gets carbon build up on the inside of it which your TPS compensates for over time. When the TPS is new and has not been relearned to the vehicle it will not be able to compensate for any carbon buildup within the throttle body.

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: high idle on startup, 2002 Chevrolet Avalanche

Hey there, it looks like you already did a fair amount of work on this. Another thing that you should take a look at is the throttle body. You may have to clean out the throttle body and get the...

Q: No start and has codes P1626 and P0463. 2000 Chevrolet Express 1500

Hi there. Check the fuel pump and see if its working. The code P0463 means that the fuel level sensor is not picking up what is in the vehicle. Make sure that there is fuel in the fuel tank and...

Q: Engine cranks but doesn't start when warm, idling around 1000 RPM in park.

Hi there. Check the idle air control valve (IAC) and see if its sticking. The IAC valve controls the engine's idle and makes sure that the engine idle is set to the factory setting of 650 to 750 rpm's. If...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...