Throttle body cleaning and idle relearn procedure
- Start and idle the engine in PARK for 3 minutes.
- With a scan tool, monitor desired and actual RPM.
- The ECM will start to learn the new idle cells and Desired RPM should start to decrease.
- Ignition OFF for 60 seconds.
- Start and idle the engine in PARK for 3 minutes.
- After the 3 minute run time the engine should be idling normal. ...
Full Answer
How do you reset the throttle body on a GM?
How to Reset the Baseline Idle in a GM TBI
- Remove the wing nut on top of the air cleaner and lift the air cleaner off the throttle body to access the vacuum lines.
- Remove plug over the idle screw located on the right front of the throttle body by using a hammer to drive a punch into the plug and then ...
- Turn off the engine and leave the ignition key in the "Off" position. ...
How to change the throttle body?
Problems after cleaning the throttle body
- Car requires more power than usual to accelerate from a full stop. ...
- Loud noises while your car is on but in idle. If you notice a loud rumbling noise while your truck or car is stopped at a stoplight, it may not ...
- Air Sensor still forcing check engine light. ...
How to reset throttle body?
- Perform accelerator pedal released position learning procedure.
- Perform throttle valve closed position learning procedure.
- Perform pre-adjustment procedure.
- Start and run the engine until normal operating temperature is reached.
- Turn the ignition switch to the OFF position.
Can You rebuild throttle body?
If you need to repair your throttle body, and a throttle body assembly is not available for your vehicle, a throttle body repair kit is the perfect solution. At O'Reilly Auto Parts, our throttle body repair kits include all the parts you need to rebuild your original throttle body. Click to see full answer.
What happens if you replace throttle body?
What is a fly by wire throttle body?
How do you reset the throttle body on a Chevy?
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 do the throttle body relearn procedure?
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 you reset throttle body after replacing?
Leave the key off for a moment, turn the key to the "On" position again, wait 3 seconds, and press the accelerator 5 times in 5 seconds. Wait 7 seconds, and hold the accelerator down. The check engine light should start blinking, continue to hold pedal down until it stops blinking. You can then start the car.
How do you relearn a throttle body with a scanner?
0:040:59How to do a throttle body relearn/reset with scanner - YouTubeYouTubeStart of suggested clipEnd of suggested clipDo load up. It's absolutely ridiculous like how easy it is press and hold accelerated pedal to theMoreDo load up. It's absolutely ridiculous like how easy it is press and hold accelerated pedal to the floor.
How do you calibrate a throttle position sensor on a Chevy?
3:224:22How to Calibrate Throttle Position Sensor Using a Multimeter (Set TPS)YouTubeStart of suggested clipEnd of suggested clip45 volts and then as you apply throttle. You should see the voltage. Increase steadily up to aboutMore45 volts and then as you apply throttle. You should see the voltage. Increase steadily up to about four and a half volts uh or all the way up to five we should be good to go here.
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.
Do you have to reprogram a new throttle body?
Code errors can cause your throttle position sensor to work erratically or incorrectly. Otherwise, you'll need professional software to reprogram your sensor. This job is best done by a professional mechanic. If your sensor just needs repairs, it could be the result of faulty or loose wiring.
How do I calibrate my electronic throttle body?
0:093:26Throttle Calibration- Relearn? Car Feels Different - YouTubeYouTubeStart of suggested clipEnd of suggested clipResearching throttle relearn or throttle calibration you know I was finding out how other peopleMoreResearching throttle relearn or throttle calibration you know I was finding out how other people have done it in the past. Put your car in the run. Position. Once everything is good press down on the
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.
How do I reset my idle speed?
You can reset the idle air control (IAC) valve by turning the car on, putting the car into park, pressing the brake down, then pushing the gas pedal down, counting down about 5 seconds, turning the car off, waiting 10 seconds and start the car again, checking to see if the car is idling properly.
How do I adjust the idle on my electronic throttle control?
Disconnect the idle air adjustment valve by locating and disengaging the electronic connector that holds it to the throttle body. Turn the idle screw to adjust the idle—turn the screw to the left to increase the RPM or to the right to lower it.
How do you test a GM accelerator pedal position sensor?
1:462:37How to test accelerator pedal position sensor, Signs of a bad ... - YouTubeYouTubeStart of suggested clipEnd of suggested clipLook at the wiring diagram and identify the signal wire back-probe the signal wire using the t-pin.MoreLook at the wiring diagram and identify the signal wire back-probe the signal wire using the t-pin. Turn the ignition to kion engine off do not start the vehicle. There should be voltage.
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 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 happens if you don't take the throttle off?
Or, if you didn't take it off and instead moved the throttle plate, you could have damaged the little gears that control the throttle plate. You're not supposed to move the throttle plate "manually" on a drive-by-wire throttle body.... Some people do it and get away with it, but you're really not supposed to.
Is it safer to move throttle plate manually?
In my opinion, with all of the potential side effects of moving the throttle plate manually, it's much easier and safer to not do so!
Can you clean a throttle body with the gas pedal?
If you need to open the throttle plate a little to get the throttle body 100% clean, you can do so with the gas pedal. When I cleaned my throttle body, I left it connected electronically and cleaned it "under the hood".
What is the deposit on the throttle plate?
The source of the deposit is exhaust gas recirculation (EGR) gas. Typically these depos- its pose no problem. Occasionally the deposit may accumulate to a point where perceived pedal ef- fort or throttle valve movement is effected. This procedure should not be performed on vehicles with mileage under 80 450 km (50,000 mi).
What is ECM in a throttle?
The engine control module (ECM) learns the idle position of the throttle plate to ensure the cor- rect idle. Anytime the throttle body is cleaned or replaced, the ECM must learn the new throttle position. The idle may be unstable or a DTC may set if the throttle position is not learned.
How fast should a car go if the engine idle speed has not been learned?
If the engine idle speed has not been learned the vehicle will need to be driven at speeds above 70 km/h (44 mph) with several decelerations and extended idles.
How long does a TB run before driving?
Removed my TB and cleaned it, Went to start and it fired right up. Let it run for 5-8 minutes before driving, no problems. All is FANTASTIC.
Can you use methyl ketone in a fuel system?
Notice: Do not use any solvent that contains Methyl Ethyl Ketone (MEK). This solvent may damage fuel system components.
Can you put fingers in throttle bore?
Caution: Turn OFF the ignition before inserting fingers into the throttle bore. Unexpected movement of the throttle blade could cause personal injury.
What happens if you replace 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.
What is a fly by wire throttle body?
Many car makers including GM started installing fly by wire electronic throttle bodies. In those vehicles, the “gas” pedal isn’t connected to the throttle body by a cable. The pedal simply provides an electronic signal, telling the throttle body how much acceleration you’re requesting.