Here’s the throttle body relearn procedure 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.
Full Answer
How do I perform a throttle Relearn on a GM throttle-by-wire vehicle?
Performing a throttle relearn on GM throttle-by-wire vehicles can easily be done with the Mac Tools Mentor Touch Scout, No. ET6100. For example, to perform a throttle relearn on a 2008 Silverado 5.3L, select and run the Idle Learn Reset test. Then start the engine and allow the ECM time to begin to learn.
What does the throttle position sensor do on a Chevy Silverado?
Your Silverado's throttle body is an air-intake butterfly valve that regulates air flow. Removing it and replacing it with a shiny, new throttle position sensor (TPS), or a new unit all together can keep your truck running strong.
Will a new throttle body learn idle speed?
On this particular re-learn, the scan tool is helpful because it can re-set learned airflow values to zero. However, as you can see from the Factory Service Manual instructions, merely driving the car after an unsuccessful "re-learn" will cause the new throttle body to learn the correct idle speed.
How does a PCM change the throttle plate home position?
A motor and gear reduction set inside the throttle body opens and closes the throttle plate to accomplish your request. Over time, carbon buildup can accumulate around the throttle plate, changing it’s “home” position. If the buildup occurs gradually, the PCM “learns” the new home position.
How do you reset the throttle body on a 2010 Chevy Silverado?
0:322:05GM Truck Electronic Throttle Body (ETB) Relearn Procedure - YouTubeYouTubeStart of suggested clipEnd of suggested clipNext turn the ignition off for 60 seconds. Then start and idle the engine in Park for 3 minutesMoreNext turn the ignition off for 60 seconds. Then start and idle the engine in Park for 3 minutes again after the 3 minute runtime the engine should be idling normally.
How do I relearn my throttle body?
1:112:42Throttle Body Relearn: When Should I Reprogram My Car's ... - YouTubeYouTubeStart of suggested clipEnd of suggested clipYou might have to let it run for three minutes and then shut the vehicle off. And then run it againMoreYou might have to let it run for three minutes and then shut the vehicle off. And then run it again for three minutes. It depends on the type of vehicle.
How do I reset my GM electronic throttle control manually?
Resetting your electronic throttle control manually can be a tricky job. First, make sure the accelerator pedal is fully released. Next, turn the ignition on and then turn it off and wait for ten seconds. During these ten seconds, be sure the throttle valve is moving by listening for a sound of operation.
What happens if you don't relearn your throttle body?
What happens when you replace the throttle body? If you replace the throttle body, the PCM won't know and will continue to use the adaptive settings as if the carbon buildup is still in place. If you don't do a relearn procedure, the PCM will “hunt” for a new baseline idle.
How do you reset the throttle position sensor on a Chevy?
The easiest way to reset your throttle position sensor is to unhook the negative cable from your battery for up to five minutes or to remove the fuse for your engine control module.
How do I reset my throttle body idle?
Turn ignition switch “ON” and wait at least 2 seconds. Turn ignition switch “OFF” wait at least 10 seconds. Turn ignition switch “ON” and wait at least 2 seconds. Turn ignition switch “OFF” wait at least 10 seconds.
Do you have to reset computer after replacing throttle position sensor?
After replacing the throttle body to your engine, if the engine light was on and has a pending code, the code will go away. If the code was a hard permanent code, then the ECM (computer) would need a hard reset.
Does an electronic throttle body have to be programmed?
In fact, on some engines a new throttle body needs to be programmed with a factory, or equivalent, scan tool. The technician cannot even clean the carbon out of the throttle body in some cases without setting a "check engine" light.
Do you have to calibrate a throttle body?
Once you have fitted a Throttle Position Sensor, or TPS, you will need to calibrate it from within MEITE. First, be sure you have correctly wired, and assigned the throttle sensor signal input to "TPS Raw" in the Analog Settings.
What is a throttle body on a Silverado?
Your Silverado's throttle body is an air-intake butterfly valve that regulates air flow. Removing it and replacing it with a shiny, new throttle position sensor (TPS), or a new unit all together can keep your truck running strong.
Why is my throttle body idle higher?
The computer will need to "re-learn" the proper butterfly settings from the sensor. The best way to remedy this quickly is to take a drive on the nearest highway, and then drive in some traffic. The computer will reset the idle by itself
How many tabs does a Vortec V8 have?
That behemoth of a top cover on your Vortec V8 is held on by only two tabs. Gently lift the front until it pops up from its post, then reach under and toward the rear of the cover to pop the back tab. (It's so easy, a US Congressman could do it!)
How to remove a TB from a stud?
Using a 10mm wrench, remove the two nuts and two bolts. Then, slide the TB off the studs.
How to get gunk out of intake?
the gunk in your in your intake is from oil coming in through the PVC valve. best thing to do is run some Sea Foam through your intake. they have a new spray can with a nozzle that you put in through the TB and you spray down the inside. the nozzle is about 30" long. just follow the directions. if you keep getting a lot of oil in your intake you may want to look into installing a catch can in your PVC line..
How to reset a dtc?
Remove negative battery cable for 20 minutes to reset all DTCs. 2. Start engine, run in park for 3 minutes. -MIL did not come on. -Engine starts at about 1200rpm, then slowly idles down to 800 rpm and back up to a steady 1000rpm. 3. Remove key for 60 seconds. 4. Start engine, run in park for 3 minutes.
Does P0121 have TPS?
I read up on P0121 and saw that it involves the TPS integrated into my Throttle Body. I decided to clean to TB before spending ~$200 on a replacement.
Is idle normal while driving?
While driving, the idle was pretty normal , although downshifts came with a noticable surge, especially the 2-1 when coming to a complete stop. Behavior continued to improve over the next several days, and after about 500 miles of driving has returned to what I would consider normal.
What to do after cleaning a GM throttle body?
After cleaning the throttle body on a GM vehicle, you may need to perform a throttle/idle relearn. After cleaning the throttle body on a GM vehicle, you may need to perform a throttle/idle relearn.
Can you throttle relearn without a scan tool?
Throttle relearn can also be done without a scan tool, essentially by letting the vehicle idle in park for several minutes and allowing time for the ECM to learn. See appropriate service information for vehicle specific procedures and details if you wish to perform a throttle relearn in this way. Information provided by Mac Tools.
How to fix a lean throttle?
Try cleaning the throttle body, a build up of grime on the throttle plate and surrounding area will cause a lean mixture to occur. Make sure you disconnect the battery for about 30 minutes while doing the cleaning procedure. This will force the computer to relearn to a clean throttle body. BTW, the fault codes only identify problem areas not specific parts, additional troubleshooting needs to be done after a code is read.
What is TP in powertrain?
The predicted throttle position (TP) is compared to the actual throttle position. The two values should be within a calibrated range of each other. Both the powertrain control module (PCM) and the throttle actuator control (TAC) module redundantly monitor the predicted and actual throttle position. This DTC sets if the PCM detects an out of range condition between the predicted and actual throttle position.
Can throttle bodies be adjusted?
The throttle bodies on most newer cars are not adjustable for its idle speed. If the Check Engine Light is on, go to the nearest auto parts store and get them to pull the error codes from your car's computer. Post the codes back here and we can give you a better answer to your question
Step 1 – Open Hood and Pop Off Plastic Engine Cover
Step 3 – Remove Air Intake Tubing
Step 4 – Remove Power Leads to The Throttle Body
Step 6 – Inspect O-Ring and Replace If Needed
Step 7 – Install The New (or Refurbished) Throttle Body
- Simply line up the stud screws and slide the unit in place. Tighten the nuts and lower bolts in a crisscross pattern until tight. Do not over tighten! There is no torque spec for these, so use common sense when tightening. Plug the sensor plug in, and secure it with the gray clip.
Step 8 – Reinstall Air Intake Assembly and Cover
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