How to fix high idle after throttle body cleaning?

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 blower in high position for three minutes. This should fix it.

How long does it take for GM 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. 1) Start the engine and let it idle in park for 3 minutes.

What happens when the throttle plate is cleaned?

Perform the Throttle Learn Procedure. Refer to Throttle Learn. 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 to clean the throttle of a Pontiac G6?

3. Clean the throttle body bore and the throttle valve plate using a clean shop towel with ETech Chemicals ET110 Throttle Body Cleaner. 4. Install the air intake duct. Refer to Air Cleaner Inlet Duct Replacement. 5. Perform the Throttle Learn Procedure.

What kind of maintenance does a throttle body need?

The throttle body is one of the most common areas of a car that needs constant maintenance. Especially if you 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 over time. The fuel-injector and throttle-body are the most common items requiring consistent maintenance.

What’s the high idle after a carb cleaner?

High idle after throttle body cleaning throttles engine i… I cleaned my throttle body with 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.

How to do throttle body cleaning and idle relearn?

1. Start and idle the engine in PARK for 3 minutes. 2. With a scan tool, monitor desired and actual RPM. 3. The ECM will start to learn the new idle cells and Desired RPM should start to decrease. 4. Ignition OFF for 60 seconds.

What do you need to know about throttle body bore?

Inspect the throttle body bore and the throttle valve plate for deposits. You will need to open the throttle valve in order to inspect all surfaces. Notice: Do not use any solvent that contains Methyl Ethyl Ketone (MEK). This solvent may damage fuel system components. 3.

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 cause idle issues on my car at one point or another.

When does the RPM go back to normal?

The RPM will usually go back to normal as you accelerate the vehicle, but will increase again after you stop. This is definitely not a normal situation. If you are experiencing a rough idle or your RPM is running high, then there are a variety of reasons for why this could be happening.

How to relearn high idle after throttle cleaning?

What should the idle RPM be on a car?

Your engine should normally get to around 700 RPM after you start the vehicle, depending on the model. If your idle is way off and you have one or more of the problems listed above, then you will want to diagnose the issue right away.

Is it normal to have a high idle?

I recommend to remove the idle air control valve from the throttle body, clean it, and also clean the throttle plate. That should help with the high idle. Though again, it is normal for cars to experience high idle until it reaches operating temperature.

Can You rebuild throttle body?

There is nothing to “rebuild” in a wrangler throttle body. It is only a large hole with a round plate in the middle that connects to your gas pedal and two sensors, an IAC (idle air control) and TPS (throttle position sensor).

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 the gummy accumulations with ease.

How often should you clean your throttle body?

It’s recommended by most automotive manufacturers to remove and clean your throttle body roughly every 100,000 miles. However, it’s also a good idea to clean the throttle body while on the vehicle every 30,000 miles.

Is it difficult to clean my throttle body?

Though on your particular vehicle high idling will likely be caused by a dirty idle air control valve, or carbon buildup on the throttle plate. 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 to reset throttle body calibration [ step by step guide ]?

Make sure that the accelerator pedal is fully released. 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.

What’s the best way to clean a throttle plate?

Open the throttle plate by operating the linkage or having an assistant push on the gas pedal and spray the cleaner into the throat. Allow it to soak in for a moment, then using a clean rag, wipe out the build up. Be sure to only use a clean debris free rag as we don’t want any unwanted debris inside the intake.

What are the different types of throttle bodies?

There are two types of throttle bodies, cable operated which is shown in the video and electronic/fly by wire that is found on most newer vehicles. Be sure to refer to your vehicle’s manufacturer manual to determine how to properly open the throttle butterfly.

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 remove the intake hose from the vehicle. Unbolt and remove the throttle body. Note: be careful not to damage the throttle body motor housing as you will be re-using it.

Is there a way to reset the throttle body?

This method is almost foolproof as long as all ECU control parameters are within their normal ranges. Resetting The Throttle Body Calibration (this step is conditional) A Rough Idle or a SES can sometimes be caused by a change in the throttle body position sensor calibration.

How do you clean a throttle control valve?

After the throttle control valve and throttle body are clean, install everything and test the operation of the throttle body. Installation is in reverse steps of the removal for your individual vehicle but should follow these guidelines. Attach air intake hose to throttle body and tighten, and attach the mass airflow sensor.

How do you put a throttle shaft on a car?

Installation Instructions. Place the plastic capped spring over the end of the throttle shaft of the throttle body and line the pigtail hook on the spring up with the catch slot in the gear. Install the motor housing minus the removable cap onto the throttle body over the plastic spring cap and tighten screws.

When is the best time to clean the throttle?

Have them depress the gas pedal all the way to open the throttle plate so you can gain access to do your cleaning. This will likely prevent you from upsetting the throttle position and causing the condition mentioned above. Honestly, the only time I recommend cleaning a throttle is when it’s sticking.

Do you need to clean a dBW throttle body?

You don’t need to remove a throttle body to clean it. If you have a DBW throttle body, DO NOT MOVE THE THROTTLE PLATE MANUALLY TO CLEAN IT, especially with the key in the ON position. This will confuse the computer and it will have to be reset in order for the engine to start and run again.

Why do I need to clean the throttle body?

Since the Idle Air Control valve (IAC) is attached to the bottom of the throttle body, removing the throttle body gives us the opportunity to clean this component as well. A stuck IAC valve will result in a too high or too low engine idle, rough idle, and engine stall during warmup.

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 cylinder 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.

When do you know your throttle body is clogged?

If this is significantly out by more than 10-15% then the chances are you have a clogged throttle body that’s impacting your car’s performance. When your throttle body is operating below its normal effectiveness, one of the tell-tale signs is a poor or low idle.

How to clean the IAC and throttle body on the 1997-2001?

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 loose the carbon and varnish build up. As the solvent is being burned off, some smoke will blow out through the exhaust pipe.

Why did my Sierra 5.3L throttle body change?

You said the throttle body was really dirty. The ECM made an adjustment due to the carbon build up on the throttle body. When you cleaned it, you caused a sudden change to the throttle body function and confused the ECM. It should readjust after about 200 miles or so and be back to normal. You need to take a road trip.

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 it’s “home” position. If the buildup occurs gradually, the PCM “learns” the new home position.

Can a Sierra 5.3L idle up to 2500 rpm?

If you take it out of gear, it will momentarily idle up to 2500 and then come back down to normal, THEY said oh yea thats common, probably the throttle body carboned up, we charge 125 bucks to clean that. I said my truck is still in warranty, what the hell?

What causes a rough idle or a ses?

A Rough Idle or a 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. Note: These procedures are a little tricky to do. You must get the timing just right Use a stop watch to help the precision of your timing.

How is the idle speed of a car controlled?

Hello, the idle speed on your car is controlled by the computer through the throttle body motor assembly. Depending on what the desired idle speed is the computer will move the throttle plate until the engine reaches the desired RPM.

How to do the throttle body relearn procedure?

During this period the idle may be higher than normal. It should slowly drop as the engine heats up. Watch the engine temp gauge and note when it reaches operating temp. Then continue to let it idle for an additional 5 minutes. It will continue to adjust idle during this period.

How to do throttle body re-Learn Chevy Malibu?

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.

How to fix high idle after throttle body cleaning?