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How to peforme relearn predcure idle 08 chev. 1500 5.3 engine

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SOURCE: what is relearn predcudre for idle on 08 chev. 1500 5.3 eng.

Throttle Learn
Description
The engine control module (ECM) learns the airflow through the throttle body to ensure the correct idle. The learned airflow values are stored within the ECM. These values are learned to adjust for production variation and will continuously learn during the life of the vehicle to compensate for reduced airflow due to coking. Anytime the throttle body airflow rate changes, for example due to cleaning or replacing, the values must be relearned.
A vehicle that had a heavily coked throttle body that has been cleaned or replaced may take several drive cycles to learn out the coking. To accelerate the process, the scan tool has the ability to reset all learned values back to zero. A new ECM will also have values set to zero.
The idle may be unstable or a DTC may set if the learned values do not match the actual airflow. Without Scan Tool - Learn Procedure
• DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0116, P0117, P0118, P0120, P0122, P0123, P0128, P0171, P0172, P0174, P0175, P0201, P0202, P0203, P0204, P0205, P0206, P0220, P0222, P0223, P0300, P0351, P0352, P0353, P0496, P0601, P0604, P0606, P060D, P0641, P0651, P1516, P2101, P2119, P2120, P2122, P2123, P2125, P2127, P2128, P2135, P2138, or P2176 are not set.
• The engine speed is between 450-4,000 RPM.
• The manifold absolute pressure (MAP) is greater than 5 kPa.
• The mass air flow (MAF) is greater than 2 g/s.
• The ignition 1 voltage is greater than 10 volts. Without Scan Tool - Learn Procedure
Important: Do NOT perform this procedure if DTCs are set. Refer to Diagnostic Trouble Code (DTC) List - Vehicle.
Start and idle the engine in PARK for 3 minutes.

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.
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.
? 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.
After the drive cycle, the engine should be idling normally.
? If the engine idle speed has not been learned, turn OFF the ignition for 60 seconds and repeat step 6.
Once the engine speed has returned to normal, clear DTCs and return to the diagnostic that referred you here.

Posted on Dec 18, 2016

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What is relearn predcudre for idle on 08 chev. 1500 5.3 eng.


Throttle Learn
Description
The engine control module (ECM) learns the airflow through the throttle body to ensure the correct idle. The learned airflow values are stored within the ECM. These values are learned to adjust for production variation and will continuously learn during the life of the vehicle to compensate for reduced airflow due to coking. Anytime the throttle body airflow rate changes, for example due to cleaning or replacing, the values must be relearned.
A vehicle that had a heavily coked throttle body that has been cleaned or replaced may take several drive cycles to learn out the coking. To accelerate the process, the scan tool has the ability to reset all learned values back to zero. A new ECM will also have values set to zero.
The idle may be unstable or a DTC may set if the learned values do not match the actual airflow. Without Scan Tool - Learn Procedure
• DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0116, P0117, P0118, P0120, P0122, P0123, P0128, P0171, P0172, P0174, P0175, P0201, P0202, P0203, P0204, P0205, P0206, P0220, P0222, P0223, P0300, P0351, P0352, P0353, P0496, P0601, P0604, P0606, P060D, P0641, P0651, P1516, P2101, P2119, P2120, P2122, P2123, P2125, P2127, P2128, P2135, P2138, or P2176 are not set.
• The engine speed is between 450-4,000 RPM.
• The manifold absolute pressure (MAP) is greater than 5 kPa.
• The mass air flow (MAF) is greater than 2 g/s.
• The ignition 1 voltage is greater than 10 volts. Without Scan Tool - Learn Procedure
Important: Do NOT perform this procedure if DTCs are set. Refer to Diagnostic Trouble Code (DTC) List - Vehicle.
Start and idle the engine in PARK for 3 minutes.

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.
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.
? 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.
After the drive cycle, the engine should be idling normally.
? If the engine idle speed has not been learned, turn OFF the ignition for 60 seconds and repeat step 6.
Once the engine speed has returned to normal, clear DTCs and return to the diagnostic that referred you here.

Dec 18, 2016 | Cars & Trucks

2 Answers

How do I adjust the throttle body


The throttle bodies on most newer cars are not adjustable for its idle speed. If the Check Engine Light is on, go to the nearest auto parts store and get them to pull the error codes from your car's computer. Post the codes back here and we can give you a better answer to your question

Mar 22, 2015 | 2007 Toyota Corolla

1 Answer

How do i do a throttle body relearn on a 08 silverado 1500


Try clearing codes with hand held and let it relearn on its own ,you will have to drive it for awhile for relearn .it may not idle at first

Feb 10, 2014 | Cars & Trucks

1 Answer

I just got done replacing the power steering motor on my 2003 GMC Seirra 1500, After I got done bleeding the lines i took it out for a test drive but everytime i put it in gear it idles down extremely low...


If you disconnected the battery,the computer needs to relearn the idle profile. This may take a bit of driving.Also,make sure the air intake piping is properly secured to the throttle body and Mass airflow sensor at the filter housing and not allowing the engine to **** in any false air past the MAF

Sep 06, 2011 | 2003 GMC Sierra 1500

1 Answer

Need to replace computer on 2002 chev malibu . What is the proper steps to take in removel


YOU CANT REPLACE PCM AT HOME BECAUSE YOU NEED SPECIAL DIAGNOSTIC EQUIPMENT TO REPROGRAM THE NEW PCM.YOU NEED GM SCANNER THAT CAN REPROGRAM RELEARN CKP AND CMP.RELEARN IDLE AND REPROGRAM THEFT SECURITY SYSTEM.

May 10, 2011 | 2002 Chevrolet Malibu

3 Answers

Reset check engine light for a 2001 chev silverado with 4.3


Unhook the negative side of the battery for 15 minutes and it will forget the code and relearn all parameters. It'll run and shift a little funky until it relearns. If your radio has a factory code lock, be sure to write that down before you unhook the battery or the radio won't work.

Dec 28, 2010 | 2001 Chevrolet Silverado 1500

1 Answer

I have 1995 V6 Camry and I just changed the battery and it nows Idles at 1500 in park and about 1100 in drive.


when battery was unhooked the computor loose its memory know it will have to relearn the engine ,you migth want reset the computor again but after hooking battery back up drive it for a few miles to relearn the engine .

Dec 28, 2010 | 1995 Toyota Camry

1 Answer

I have a 2001 chevy 1500 4.3L and i just replaced the starter and now is idling at 500 rpms. what could cause this?


How long has it ran since you hooked the battery back up. It needs to run at least 10 mins. for it to relearn it's idle strategy.

Jul 04, 2009 | 2001 Chevrolet Silverado 1500

1 Answer

Idle and stalling


Here is the most common cause of surges and stalls and low idle rough idle, it is the idle speed control air-bypass valve and throttle valve (IAC for short), they get full of gunk over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Nov 21, 2008 | 1988 Chevrolet Cavalier Z24

2 Answers

1996 Chev. 1500 pickup truck, 305 C.I. PO300 code


Than you problem solved by yourself already,

Dear you had done good job for your dream,

just some modification nedds like,

CHECK YOU ENGINE MOUNTINGS,OR THIGHTEN IT,
YOU HAVE TO ALSO CHECK YOUR PLACEMENTS ORDERS OF YOUR ENGINE THAT NOT TO BE CHENGED AFTER YOUT TRY.

THNX

May 20, 2008 | 1996 Chevrolet K1500

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