throttle body problem
01-18-2017, 07:12 AM
#1
5th Gear
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throttle body problem
I just had the top of my throttle body cleaned by a mechanic and when he tried to reset the idle with his computer he couldn't set the idle.. The car idled very high and was even going into third gear with my foot of off the peddle. He tried over and over with no success. Pleas help!!! it is a 20007c6
Last edited by skeeter7711; 01-18-2017 at 07:14 AM.
01-18-2017, 07:51 AM
#2
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St. Jude Donor '15
"In honor of jpee"
I'll keep this at the top even if I have no answers. Presume you know you need a new "mechanic."
01-18-2017, 07:52 AM
#3
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Did any DTCs get set? Like P0507. Read up on it.
Here is shop manual info on throttle learn:
Throttle Learn
Description
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. The idle may be unstable or a DTC may set if the throttle position is not learned.
Conditions for Running the Throttle Learn Procedure
• DTCs P0101, P0102, P0103, P0107, P0108, P0111, P0112, P0113, P0506, and P0507 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.
Throttle Learn
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.
With a scan tool, monitor desired and actual RPM.
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.
Here is shop manual info on throttle learn:
Throttle Learn
Description
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. The idle may be unstable or a DTC may set if the throttle position is not learned.
Conditions for Running the Throttle Learn Procedure
• DTCs P0101, P0102, P0103, P0107, P0108, P0111, P0112, P0113, P0506, and P0507 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.
Throttle Learn
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.
With a scan tool, monitor desired and actual RPM.
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.
The following users liked this post:
Jetvette_95 (03-02-2021)
01-18-2017, 03:56 PM
#7
Racer
Did any DTCs get set? Like P0507. Read up on it.
Here is shop manual info on throttle learn:
Throttle Learn
Description
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. The idle may be unstable or a DTC may set if the throttle position is not learned.
Conditions for Running the Throttle Learn Procedure
• DTCs P0101, P0102, P0103, P0107, P0108, P0111, P0112, P0113, P0506, and P0507 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.
Throttle Learn
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.
With a scan tool, monitor desired and actual RPM.
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.
Here is shop manual info on throttle learn:
Throttle Learn
Description
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. The idle may be unstable or a DTC may set if the throttle position is not learned.
Conditions for Running the Throttle Learn Procedure
• DTCs P0101, P0102, P0103, P0107, P0108, P0111, P0112, P0113, P0506, and P0507 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.
Throttle Learn
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.
With a scan tool, monitor desired and actual RPM.
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.
Reads like he knows what he's writing about.If you follow his instructions (which seems like a good idea) please post your results.
Good luck....
01-18-2017, 04:14 PM
#8
Burning Brakes
Some drive by wire throttle bodies get out of wack by moving the throttle blade during the cleaning procedure due to the throttle blade being connected to a motor and rheostat. Hopefully the recalibration procedure will help you. If that does not work you have a throttle body problem. One half of the offending assembly can now be purchased instead of a whole unit.
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Rods2006vertz51 (10-19-2023)
01-18-2017, 04:49 PM
#9
Melting Slicks
If it is your throttle body I would think the "mechanic" would pay for any replacement parts. I don't know if I would let him install a replacement even if he comp'ed the labor.
01-18-2017, 04:56 PM
#10
Pro
It seems odd. Today I reinstalled my throttle body I got back from ZMax. Had it CNC machined, started it up and nothing out of the ordinary happened idled perfect and threw no codes.
01-18-2017, 05:11 PM
#11
Burning Brakes
Did any DTCs get set? Like P0507. Read up on it.
Here is shop manual info on throttle learn:
Throttle Learn
Description
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. The idle may be unstable or a DTC may set if the throttle position is not learned.
Conditions for Running the Throttle Learn Procedure
• DTCs P0101, P0102, P0103, P0107, P0108, P0111, P0112, P0113, P0506, and P0507 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.
Throttle Learn
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.
With a scan tool, monitor desired and actual RPM.
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.
Here is shop manual info on throttle learn:
Throttle Learn
Description
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. The idle may be unstable or a DTC may set if the throttle position is not learned.
Conditions for Running the Throttle Learn Procedure
• DTCs P0101, P0102, P0103, P0107, P0108, P0111, P0112, P0113, P0506, and P0507 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.
Throttle Learn
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.
With a scan tool, monitor desired and actual RPM.
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.
Thanks for taking the time and sharing it.
12-25-2017, 06:48 PM
#12
Le Mans Master
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Location: Farmington CT
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Cruise-In VII Veteran
Some drive by wire throttle bodies get out of wack by moving the throttle blade during the cleaning procedure due to the throttle blade being connected to a motor and rheostat. Hopefully the recalibration procedure will help you. If that does not work you have a throttle body problem. One half of the offending assembly can now be purchased instead of a whole unit.
Getting the 2135 code with "reduced engine power"
Thanks
12-25-2017, 09:26 PM
#14
Race Director
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2021 C6 of the Year Finalist - Modified
That seems to happening alot, especially with new / low post members on the forum.
BTW ... The OP that started this thread a year ago only has 5 total posts, and of course, he never came back to this thread he started a year ago.
I can't see why some of these new / very low post members even waste their time starting a thread, if they have no intention of coming back to it ?
BTW ... The OP that started this thread a year ago only has 5 total posts, and of course, he never came back to this thread he started a year ago.
I can't see why some of these new / very low post members even waste their time starting a thread, if they have no intention of coming back to it ?
12-26-2017, 09:59 AM
#15
Team Owner
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C6 of Year Finalist (appearance mods) 2019
Just to add some info. When I cleaned my TB the same thing happened. Very high idle and hard downshift into 2nd and first.
Turned out to be a combination of a malfunctioning MAF and TB. Replaced MAF and had dealer do a TB relearn procedure.
Determined the MAF was bad by disconnecting it and then starting it up. Idle was correct. Reconnected the MAF, started it up and erratic, high idle returned. Replaced MAF but was still having some idle and surging problems. TB relearn cleared it up.
Hope this helps.
Turned out to be a combination of a malfunctioning MAF and TB. Replaced MAF and had dealer do a TB relearn procedure.
Determined the MAF was bad by disconnecting it and then starting it up. Idle was correct. Reconnected the MAF, started it up and erratic, high idle returned. Replaced MAF but was still having some idle and surging problems. TB relearn cleared it up.
Hope this helps.
12-26-2017, 10:12 PM
#17
Safety Car
12-26-2017, 10:39 PM
#18
Le Mans Master
I've cleaned my throttle body many times on the car and never have thrown any codes and it idles great,the only problem I've been having for a long time is when i put it in R to back out it will die on me,restart and it will do the same a couple more times? 2008 which has a LS2 throttle body.
12-26-2017, 10:43 PM
#19
Le Mans Master
Some drive by wire throttle bodies get out of wack by moving the throttle blade during the cleaning procedure due to the throttle blade being connected to a motor and rheostat. Hopefully the recalibration procedure will help you. If that does not work you have a throttle body problem. One half of the offending assembly can now be purchased instead of a whole unit.
06-02-2020, 09:17 PM
#20
Instructor
