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.

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.

Is there a relearn procedure for throttle body cleaning?

While the cleaning procedure is pretty normal across the board with GM, there are 6 different relearn procedures listed, and a lot that require no relearn at all. Below is the procedure for cleaning. The following pages include a list by name of which proce- dures to use. This is a comprehensive list for the model year 2007.

What should the idle speed of a car be?

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. 7. After the drive cycle, the engine should be idling normally.

What should the idle speed be on a Chevy Malibu?

Start and idle the engine in PARK for 3 minutes. 6. After the 3 minute run time the engine should be idling normal. Important: During the drive cycle the check engine light may come on with idle speed DTCs. If idle speed codes are set, clear codes so the ECM can continue to learn.

Which is the best way to clean the throttle?

It is best to remove the throttle body and clean it fully on the front and rear of the bore. 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.

Why does the idle go up after cleaning the throttle body?

The idle is going to be high at first until the computer relearns the idle again. Cleaning the throttle body allowed more air to enter the engine, and the computer is compensating by adding more fuel.

How does the throttle plate work on a GM car?

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.

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.

What’s the proper way to clean the throttle body?

Unexpected movement of the throttle blade could cause personal injury. Notice: Do not insert any tools into the throttle body bore in order to avoid damage to the throttle valve plate. 2. 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.

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 does a GM throttle body relearn procedure?

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.

When did the Pontiac G6 come out in the US?

Pontiac G6. The Pontiac G6 is a midsize car that was produced by General Motors under the Pontiac brand. It was introduced in 2004 for the 2005 model year to replace the Grand Am. The car was built on the GM Epsilon platform which it shared with the Chevrolet Malibu and Saab 9-3 along with other General Motors vehicles.

Are there any recalls on the Pontiac G6?

On September 21, 2012, General Motors recalled 473,841 vehicles involving the Chevy Malibu, Pontiac G6 and Saturn Aura from model years 2007 through 2010 equipped with four-speed automatic transmissions. The problem is a condition that could make cars roll when in park.

What kind of safety rating does the Pontiac G6 have?

The Insurance Institute for Highway Safety gave the Pontiac G6 an overall Good score in the frontal offset crash test but an Acceptable score in the side impact crash test even though side airbags were introduced late in the 2006 model year. The lower side impact score was due in part to a marginal rating for the structure/safety cage category.

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’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.

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.

When to perform throttle body cleaning and idle relearn procedure?

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).

Why do I have gas deposits on my throttle?

Important: Over extended time and mileage, deposits may accumulate on the back of the throttle valve 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.

Are there any problems with the Pontiac G8?

The defect can lead to the continual illumination of the cars brake lights, giving other drivers on the road little warning when the vehicle is coming to a stop. Due to the increased risk of crash, Pontiac dealers will begin fixing the problem June 5th.

What kind of vibration does a G8 have?

It has constatant light to medium vibration most noticible at around 68 mph. Sometimes you can see the the steering wheel buzzing and you can feel the vibration strongly thru the shift nob. I took the car to my dealer at about 1400 miles, they road force balanced the tires and then put 2 new front tires on the car.

What to do if your GM G8 vibrates?

THIS G8 VIBRATED AT LEAST AS BADLY AS MINE! The service manager then promised to call Detroit to find out what else he could do. Two days later the service manager called back. He had talked to “Detroit” The answer was there was nothing else he could do. G8’s JUST VIBRATE! Next I plan to call GM directly… Lets see if this works any better.

Why are the brake lights on my G8 not working?

Some G8 vehicles may have been equipped with an incorrectly programmed brake pedal position switch from the factory. The defect can lead to the continual illumination of the cars brake lights, giving other drivers on the road little warning when the vehicle is coming to a stop. Due to the increased risk of crash,…

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 kind of engine is a Pontiac G8 GT?

The L76 engine is a Gen IV, 6.0L aluminum-block V8 car engine that first appeared in the 2006 Holden VZ Commodore, but most in the USA will recognize it as the engine that powered the 2008-09 Pontiac G8 GT.

What is the trouble code for intake manifold tuning?

Trouble code P2070 sets when the engine management computer detects that the intake manifold tuning valve has not moved from the open position when commanded to close.

What to do if your intake manifold falls out?

The most common repair for this code in my experience is replacing a missing or broken actuator rod bushing. When the bushing is not in place, oftentimes the actuator rod will fall out of the lever of the intake tuning valve. Next would be replacing a faulty actuator valve for the intake tuning valve.

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