Idles HIGH - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

SEXYBEAST_1LE · 08-15-2023, 06:10 PM

Can anyone help me out.. My husband taught me how to fix my camaro as the problems came to surface. My 1LE sat in garage for abt 3 mnths, longer than anticipated. She had no engine problems when I parked her & i disconnect the battery for that time period. She was getn a full vinyl wrap and my husband passed in the process. it took me 3 months to finish & I connected battery & chngd serpentine belt. Started her up & started w/no problem but idled very high (RPM in 2,000 to 3,000) 4 abt 5 to 10 sec then wld idle dn to normal i left running for abt 30 minute to run that old gas so fill the tank up. In 1st &2nd idled very high (even when i didnt give it gas) until abt 45 mph To downshift it wld idle hi in th 3s until i came to a complete stop and it wld idle for abt 5 sec and go to normal. I took off and cleaned the throttle body but it still is doing the same thing? Any ideas of what the problem is?

Wizard1183 · 08-16-2023, 03:08 AM

Quote:

Originally Posted by SEXYBEAST_1LE

Can anyone help me out.. My husband taught me how to fix my camaro as the problems came to surface. My 1LE sat in garage for abt 3 mnths, longer than anticipated. She had no engine problems when I parked her & i disconnect the battery for that time period. She was getn a full vinyl wrap and my husband passed in the process. it took me 3 months to finish & I connected battery & chngd serpentine belt. Started her up & started w/no problem but idled very high (RPM in 2,000 to 3,000) 4 abt 5 to 10 sec then wld idle dn to normal i left running for abt 30 minute to run that old gas so fill the tank up. In 1st &2nd idled very high (even when i didnt give it gas) until abt 45 mph To downshift it wld idle hi in th 3s until i came to a complete stop and it wld idle for abt 5 sec and go to normal. I took off and cleaned the throttle body but it still is doing the same thing? Any ideas of what the problem is?

Vacuum leak?

acutron42 · 08-16-2023, 04:44 AM

Welcome & sorry about the passing of you husband. You may want to try an idle relearn procedure. This can be done without the proper scan tool as well.

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.

Moto-Mojo · 08-16-2023, 08:13 AM

Why does this sound like an AI Chat Bot boning up on its Camaro knowledge?

1JEWLDSSRS · 08-16-2023, 09:21 AM

Quote:

Originally Posted by Moto-Mojo

Why does this sound like an AI Chat Bot boning up on its Camaro knowledge?

You know, I was wondering the same thing when I saw it yesterday!! These things are getting to be a PITA!! lol.

acutron42 · 08-16-2023, 11:34 AM

Yeah it does seem strange. There are some nice pics in the profile though

Aqua Blue RS/SS · 08-16-2023, 12:13 PM

Lol I wasn’t sure what Kinda pics you were referring to with a username like Sexybeast lol

acutron42 · 08-16-2023, 12:36 PM

Quote:

Originally Posted by Aqua Blue RS/SS

Lol I wasn’t sure what Kinda pics you were referring to with a username like Sexybeast lol

Now that is funny s***! People in the office are wondering what im laughing about lol!

08-15-2023, 06:10 PM	#1
SEXYBEAST_1LE Drives: 2SS/RS 1LE Join Date: Nov 2017 Location: San Antonio, Texas Posts: 1	Idles HIGH Can anyone help me out.. My husband taught me how to fix my camaro as the problems came to surface. My 1LE sat in garage for abt 3 mnths, longer than anticipated. She had no engine problems when I parked her & i disconnect the battery for that time period. She was getn a full vinyl wrap and my husband passed in the process. it took me 3 months to finish & I connected battery & chngd serpentine belt. Started her up & started w/no problem but idled very high (RPM in 2,000 to 3,000) 4 abt 5 to 10 sec then wld idle dn to normal i left running for abt 30 minute to run that old gas so fill the tank up. In 1st &2nd idled very high (even when i didnt give it gas) until abt 45 mph To downshift it wld idle hi in th 3s until i came to a complete stop and it wld idle for abt 5 sec and go to normal. I took off and cleaned the throttle body but it still is doing the same thing? Any ideas of what the problem is?

08-16-2023, 04:44 AM	#3
acutron42 Drives: 2013 Camaro 2SS AGM Join Date: Apr 2020 Location: WNY Posts: 733	Welcome & sorry about the passing of you husband. You may want to try an idle relearn procedure. This can be done without the proper scan tool as well. 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. __________________ 2013 2SS GPI built & tuned 415, spec'd by Andrew Cammer. GPI ported intake/tb/heads, Tooley springs, CHE trunnions, Callies rotating assembly, Diamond pistons, GPI SS3 VVT, ATI 10% ud damper, Circle D 3800, Kooks ceramic coated lt's with green cats, Mishimoto rad & oil cooler, Derale trans cooler, Holley efi rails.

08-16-2023, 08:13 AM	#4
Moto-Mojo Fast Cars and Old Guitars Drives: 2015 2SS RS (L99, baby!) Join Date: Apr 2012 Location: N. CA Posts: 3,973	Why does this sound like an AI Chat Bot boning up on its Camaro knowledge? __________________ “I don’t want to belong to any club that would have me as a member.” - Groucho Marx

08-16-2023, 11:34 AM	#6
acutron42 Drives: 2013 Camaro 2SS AGM Join Date: Apr 2020 Location: WNY Posts: 733	Yeah it does seem strange. There are some nice pics in the profile though __________________ 2013 2SS GPI built & tuned 415, spec'd by Andrew Cammer. GPI ported intake/tb/heads, Tooley springs, CHE trunnions, Callies rotating assembly, Diamond pistons, GPI SS3 VVT, ATI 10% ud damper, Circle D 3800, Kooks ceramic coated lt's with green cats, Mishimoto rad & oil cooler, Derale trans cooler, Holley efi rails.

08-16-2023, 12:13 PM	#7
Aqua Blue RS/SS Drives: ABM #93 Join Date: Oct 2018 Location: Lotaburger Posts: 2,694	Lol I wasn’t sure what Kinda pics you were referring to with a username like Sexybeast lol __________________ ABM #2399 2SS/RS:SOLD ABM #93 2SS/RS Black Rally stripes, Titanium Interior 4,000 miles: GM GFX side skirts and diffuser waiting on paint, GM dovetail, GM heritage, RPI ZL1 style splitter. ‘87 IROC-Z Iroc blue. all original unmolested with 50K miles.