Q: Q: Throttle body relearn

asked by on

I had my throttle body changed about 3 days ago and after all unhooking battery nd reset computer still high idle and revving.Can Anyone help

My car has 108892 miles.
My car has an automatic transmission.

Hi There, As you may know, the new throttle body installed in your engine needs to go through a "re-learning" process with the ECU to bring the idle back down. Try doing the following which should bring the idle back down to a normal operating level:

1) Start the engine and let it idle in park for 3 minutes. During that period the idle may be higher idle than normal. 2) After 3 minutes, turn the engine off and leave it off for 60- seconds. 3) Start the engine again and let it idle in park for 3 minutes one more time. During these run periods you may see a check engine light. If you have access to a scanner, scan for codes and if you get throttle body related codes, clear them. 4) If the idle speed is still off, drive the vehicle at speeds above 45-mph and operate several acceleration and deceleration cycles. Then repeat step #3 one last time.

This should bring your idle back down to normal. Should you need further help with this, please reach out to us here at YourMechanic to schedule an appointment to have one of our qualified mechanics come to your location to take a look at your vehicle.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Q: Throttle body relearn

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: Accidentally put E85 gas in my car

Modern cars have the capability to adapt to the use of lower and higher octane fuels, such as using 87 in a car that takes 91. E85 is different from gasoline as it is 85% ethanol and 15% gasoline. Normal...

Q: Would a engine mount be the cause of my car idling bad in gear sometimes it feels like it's going to turn off

Hi there. The motor mounts when damaged or worn out can cause serious vibrations, but it is highly unlikely that they are causing the engine to run rough to the point it want to stall. This is most likely caused...

Q: My front passenger headlight keeps going out, and my radio keeps going in and out if I hit a bump

Hi there. It's quite possible that you have an expose electrical wire that is creating a short circuit that is the source of these problems. In order to correctly diagnose this problem, an onsite electrical inspection by a professional mechanic...

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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.