I cleaned my throttle body with a carb cleaner about 5000 miles ago. My car used to idle at 800 rpm, but now, when the engine is cold, it idles at about 1500 rpm, going down to 800 as the engine warms up. I’ve heard people write that this is a normal cold-engine idle speed, but it wasn’t like that when it was new, and I don’t like the car’s driving characteristics from 0 to the first couple of gear shifts. I tried disconnecting the battery to reset the ECU, but that has had no effect. Is there any way how to fix the high idle after replacing throttle body? Yes, here are some methods which will help you out.
Table of Contents
High Idle After Replacing Throttle Body?
The idle will relearn if you put the vehicle in drive and allow the idle to come down with all accessories off for about two to three minutes. Then turn on your a/c with a blower in a high position for three minutes. This should fix it.
What Happens When The Throttle Plate Is Cleaned?
Perform the Throttle Learn Procedure. The engine control module (ECM) learns the idle position of the throttle plate to ensure the correct idle. Anytime the throttle body is cleaned or replaced, the ECM must learn the new throttle position.
How Long Does It Take For GM’s Throttle Body To Relearn?
If you don’t do a relearn procedure, the PCM will “hunt” for a new baseline idle. It will eventually learn it on its own, but it may take over a week of driving, during which time you will experience high and low idle speeds and possibly rough idle. Start the engine and let it idle in the park for 3 minutes.
What Kind Of Maintenance Does A Throttle Body Need?
The throttle body is one of the most common areas of a car that needs proper maintenance. Especially if your car has hit more than 75,000 miles, it’s important to pay attention to the fuel-injection system, as it may need some gentle work overtime. The fuel injector and throttle body are the most common items requiring consistent maintenance.
What Happens When You Clean The Throttle Plate?
Once that occurs, the computer should be able to identify the positioning of the throttle plate and adjust the idle after driving for a while. If the problem persists, then the throttle motor or throttle position sensor may have been damaged when the cleaning occurred.
What Causes A Car To Idle At 1500 RPM?
The idle control circuit is very common to have problems. Pull the ECU and check the board for damage. Vacuum leaks, TPS settings, BISS settings, throttle cable adjustment, stop screw adjustment. All of these have caused idle issues on my car at one point or another.
How To Relearn High Idle After Throttle Clean?
The idle will relearn if you put the vehicle in drive and allow the idle to come down with all accessories off for about two to three minutes. Then turn on your a/c with a blower in a high position for three minutes.
Once that occurs, the computer should be able to identify the positioning of the throttle plate and adjust the idle after driving for a while. If the problem persists, then the throttle motor or throttle position sensor may have been damaged when the cleaning occurred.
I recommend removing the idle air control valve from the throttle body, cleaning it, and also cleaning the throttle plate. That should help with the high idle.
What Is The Best Cleaner For A Throttle Body?
The CRC cleaner is a basic acetone cleaner that comes in aerosol form. As such it is highly flammable and must be stored in a cool and dark place. This brand is used for cleaning throttle bodies and eliminates gummy accumulations with ease.
Is it Difficult To Clean My Throttle Body?
The idle air control valve will be partially cleaned when cleaning the throttle body. But, it is extremely difficult to fully clean the idle air control valve without removing it from the throttle body.
How Do You Remove The Throttle Body From A Mustang?
Disconnect the PCV tube on the inlet hose by gently twisting the green locking tab and pulling the tube away from the hose and removing the intake hose from the vehicle. Unbolt and remove the throttle body. One should be careful not to damage the throttle body motor housing as you will be re-using it.
How To Clean The Throttle Body On A Toyota Camry?
This video will show you how to remove and clean the throttle body on Toyota vehicles with the 4 cylinders 5-SFE engine typically found on the older model Camry, RAV4 and Celica. Over time, the carbon buildup can make the throttle body plate “stick” resulting in engine response lag, the plate opening too much or too fast, and erratic idle.
How To Clean The IAC And Throttle Body From 1997-to 2001?
Apply a liberal amount of solvent in the port opening. Re-connect the hose and turn the engine on and off a few times to allow the IAC valve to work lose the carbon and varnish build-up. As the solvent is being burned off, some smoke will blow out through the exhaust pipe.
What Causes A Rough Idle Or A SES?
A Rough Idle or an SES can sometimes be caused by a change in the throttle body position sensor calibration. To correct any accidental changes in throttle body calibration, use these procedures to recalibrate. These procedures are a little tricky to do. You must get the timing just right Use a stopwatch to help the precision of your timing.
How Does A GM Throttle Body Relearn Procedure?
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 its “home” position. If the buildup occurs gradually, the PCM “learns” the new home position.
Conclusion
Hope the above mentioned information helps you to fix the high idle after replacing throttle body.
If you have any queries about the above-mentioned methods then comment below and we will try to get back to you as soon as possible.
Cheers!