Here’s the throttle body relearn procedure
- Start the engine and let it idle in park for 3 minutes. During that period the idle may be higher idle than normal.
- After 3 minutes, turn the engine off and leave it off for 60- seconds.
- Start the engine again and let it idle in park for 3 minutes one more time. ...
What are symptoms of a bad throttle position sensor?
What Are The Symptoms and Signs Of a Failing Throttle Position Sensor?
- Lack Of Power. If your engine isn’t getting the fuel it needs, or is getting too much, you’ll notice that it doesn’t seem to be accelerating as it should be.
- Trouble Accelerating. In a similar vein, you may notice that your car will accelerate, but won’t get past a certain speed.
- Uneven Idle. ...
- Check Engine Light. ...
How to reset throttle position sensor?
Resetting Throttle Position Sensor Ford
- Tools You Need:
- Step-1: Open Hood & Cover the Battery Terminator. The first thing we do to reset throttle position sensor Ford rightly is opening the hood of the truck.
- Step-2: Remove The Jumper Cable & Battery Clamp. ...
- Step-3: Turn Off All The Accessories. ...
- Step-4: Start The Truck In Idle Position. ...
- Step-5: Press The Throttle To Reset Perfectly. ...
How do you change the throttle position sensor?
- Services
- Oil Change
- Car is not starting Diagnostic
- Check engine light is on Diagnostic
- Pre-purchase Car Inspection
- Battery Replacement
- Brake Pad Replacement
- Explore 500+ Services
How do I reprogram the throttle position sensor?
This category here is for Acceleration Pedal Release Position Procedure and Learning.
- Be sure that you have fully released your car accelerator pedal.
- Then Turn car ignition switch “ON” and then you have to wait for least 2 secs while holding onto the keys.
- Now turn “OFF” the ignition switch and wait for another 10 seconds before proceeding to the next step.
How do I relearn my throttle position sensor?
1:082:42Throttle 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.
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 electronic throttle control system?
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 relearn a procedure?
0:322:05GM Truck Electronic Throttle Body (ETB) Relearn Procedure - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo you'll need to perform a relearn procedure on the PCM. Here's how you do it start. And idle theMoreSo you'll need to perform a relearn procedure on the PCM. Here's how you do it start. And idle the engine in Park for 3 minutes initially. You may notice a higher incorrect idle speed until the ECM.
How do I calibrate my accelerator pedal position sensor?
To calibrate the accelerator pedal assembly: To recalibrate the ECM and accelerator pedal, the ignition switch must be in the ON position and then the accelerator pedal must be slowly and fully depressed from idle to full throttle. Repeat the procedure three times.
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.
Do you have to program a new throttle position sensor?
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.
Does a new throttle position sensor need to be calibrated?
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.
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.
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.
What Is a Throttle Position Sensor?
When you press down on the gas pedal, your throttle body unit's valve opens. This causes your throttle position sensor to adjust the engine intake manifold accordingly.
Where should the throttle sensor be mounted?
It should be mounted to your throttle body, which is on top of your engine. You should disconnect your negative battery cable before removing the sensor. This helps you avoid the risk of electrical shock or causing an error code on your engine control module.
What is the purpose of throttle body system?
Many different components, including the throttle body system, work together to provide the engine with smooth acceleration. If you’re concerned with the throttle body or are experiencing acceleration and idling issues, review these throttle body symptoms to determine whether your vehicle needs a new throttle position sensor and what you can do to repair, replace or reprogram your sensor.
Why is it important to replace the fuel sensor?
It’s integrated with your engine control module and helps keep your idling and acceleration smooth. When this sensor is damaged or not working properly , it’s important for you to replace it to restore your vehicle to its full performance and power.
How to install a new sensor?
Install your new sensor by working backward through the removal steps. Start by installing the sensor using the mounting screws. Next, connect your sensor to your vehicle's electrical system using a convenient electrical connector. You should be able to easily push it together and hear a distinct click. Check to ensure a firm connection.
How to get better acceleration in car?
Connect your battery and prepare to double-check your work. Start your car and test the idle and acceleration. Depending on your vehicle and the sensor you've installed, you may need to manually adjust the sensor. Other options automatically adjust to offer your car the optimal levels of air and fuel for a smooth idle and powerful acceleration.
Can you replace a sensor?
Completely replacing your sensor may be the best way to avoid future issues, but some issues can be easily fixed by reprogramming or repairing your sensor. Reprogramming or resetting your sensor can sometimes solve these issues. This step can also be necessary when you install a new sensor.
How Does the Throttle Position Sensor Work?
Throttle position sensor, or TPS for short, is an important part of the fuel management system and directly links the gas pedal and the engine. As the driver applies pressure on the gas pedal, TPS converts that information into valve movement, dictating the amount of air flowing into the engine’s intake manifold.
Why does my Toyota have irregular revs?
Irregular idle revs and stalling can be caused by a failing throttle position sensor. Turn the ignition on and pay attention to the rev gauge, and if your Toyota doesn’t have one, listen to the engine.
Why does a fully functional engine overflow with fuel?
A fully functional engine uses the optimal amount of fuel for any situation, but due to the TPS not working properly , the engine will overflow with fuel and increase fuel consumption while reducing performance.
What is the first warning sign on a Toyota?
The first warning sign comes before any symptoms, in the form of the check engine light. If you’re driving a Toyota with more than a few years of service, chances are that the check engine light is already lit up for some other, potentially insignificant reason.
What is the common course of action for repairing a car?
The added complexity leads to better performance and fuel economy, but in case of failure repairing it proves to be a difficult task, so the common course of action is to replace it completely.
Can you reset a sensor?
There is still a chance that the sensor can be reset, but if not, you’ll need to get a replacement to ensure safe engine operation. Because of the complexity of the task, I cannot properly instruct you on how to replace the sensor yourself. If you feel like you’re up for the challenge, take a look at the following video for additional information:
Does the second sequence work on a Tacoma?
Just like the first sequence, the second does not require any tools or knowledge, and the engine doesn’t have to be warmed up. It works on Toyota Tacoma between the years 2005 and 2015 but could work on other models as well.
1 Answer
An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.
Marvin
An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.
Where can I get Toyota tech info?
A short term subscription for Toyota tech info is available here https://techinfo.toyota.com. This is available in the US, I do not know if such is available elsewhere. This material is copyrighted so I will not copy it here.
Does Toyota have an idle relearn?
Toyota does not mention a specific procedure for an idle relearn in their official service information. Even the procedure for throttle body replacement does not mention a relearn procedure. The info does not state that a procedure is not needed, it is silent on the subject.
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.
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.
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.
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..
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.