Honda-Acura Surging Idle Speed (case study)
What causes a surging idle speed on a Honda or Acura?
Here, we’re addressing that complaint and what to look for when you run into this symptom. Honda has a unique programmed response to excessive idle speed, resulting in the distinctive Honda idle ‘surge’. Don’t be a parts changer and replace the IAC motor!
Engine Performance Diagnostics chapter 20
Symptoms
- surging idle when warm
Fix
- adjusting the cold fast idle valve
Tests shown
- how to scope test a fuel injector
- understanding how Honda/Acura controls excessive idle speed
- how to measure duty cycle on a computer controlled solenoid
- how to test the electrical IAC solenoid
- understanding common causes of high idle speed conditions
- understanding the operation of a Honda cold fast idle valve
- how to determine if the cold fast idle valve is operating properly
- how to test for a malfunctioning cold fast idle valve at the throttle body
- how to inspect and adjust a Honda cold fast idle valve
Tools used
- lab scope
Playlist
- (Chapter 20) Idle Speed Problems and Testing
https://www.youtube.com/playlist?list=PLAFYVCyenqcrqC1WhVE1LTzQSn4mbMjdu
Related videos
- P0507 Idle Control System (RPM Too High) - vacuum leak - GM
https://youtu.be/PKJnW08-Z8c
- Ford Idle Air Control (IAC) valve test (how to adjust minimum idle speed)
https://youtu.be/ayjhL9jpFH8
- P0506 IAC System RPM below expected (vacuum leak) - Ford
https://youtu.be/Sqpelz3aTNQ
- Ford idle air control valve (IAC) test - stalling problems
https://youtu.be/0r3nCwZsS3M
For more information on this topic, I have written a “field manual” called Engine Performance Diagnostics which is available at www.scannerdanner.com as an eBook or paper book.
Want even more diagnostic training? Whether you are a DIY trying to fix your own car, someone looking to become an auto technician, or a current auto technician that wants to get more into diagnostics, subscribe to ScannerDanner Premium https://www.scannerdanner.com/join-scannerdanner-premium.html There is a 14 day free trial.
On ScannerDanner Premium I will bring you right into my classroom at Rosedale Technical College. You will find page for page lectures taken right from my book as well as exclusive classroom type case studies. What is so special about these classroom case studies? I pull live problem vehicles directly into my classroom and we troubleshoot them in real time, using and applying the theory and testing procedures we learn during the classroom lectures. There is no better on-line training of how to troubleshoot automotive electrical and electronics systems anywhere!
Disclaimer:
Due to factors beyond the control of ScannerDanner LLC, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. ScannerDanner LLC assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. ScannerDanner LLC recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of ScannerDanner LLC, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not ScannerDanner LLC.
Видео Honda-Acura Surging Idle Speed (case study) канала ScannerDanner
Here, we’re addressing that complaint and what to look for when you run into this symptom. Honda has a unique programmed response to excessive idle speed, resulting in the distinctive Honda idle ‘surge’. Don’t be a parts changer and replace the IAC motor!
Engine Performance Diagnostics chapter 20
Symptoms
- surging idle when warm
Fix
- adjusting the cold fast idle valve
Tests shown
- how to scope test a fuel injector
- understanding how Honda/Acura controls excessive idle speed
- how to measure duty cycle on a computer controlled solenoid
- how to test the electrical IAC solenoid
- understanding common causes of high idle speed conditions
- understanding the operation of a Honda cold fast idle valve
- how to determine if the cold fast idle valve is operating properly
- how to test for a malfunctioning cold fast idle valve at the throttle body
- how to inspect and adjust a Honda cold fast idle valve
Tools used
- lab scope
Playlist
- (Chapter 20) Idle Speed Problems and Testing
https://www.youtube.com/playlist?list=PLAFYVCyenqcrqC1WhVE1LTzQSn4mbMjdu
Related videos
- P0507 Idle Control System (RPM Too High) - vacuum leak - GM
https://youtu.be/PKJnW08-Z8c
- Ford Idle Air Control (IAC) valve test (how to adjust minimum idle speed)
https://youtu.be/ayjhL9jpFH8
- P0506 IAC System RPM below expected (vacuum leak) - Ford
https://youtu.be/Sqpelz3aTNQ
- Ford idle air control valve (IAC) test - stalling problems
https://youtu.be/0r3nCwZsS3M
For more information on this topic, I have written a “field manual” called Engine Performance Diagnostics which is available at www.scannerdanner.com as an eBook or paper book.
Want even more diagnostic training? Whether you are a DIY trying to fix your own car, someone looking to become an auto technician, or a current auto technician that wants to get more into diagnostics, subscribe to ScannerDanner Premium https://www.scannerdanner.com/join-scannerdanner-premium.html There is a 14 day free trial.
On ScannerDanner Premium I will bring you right into my classroom at Rosedale Technical College. You will find page for page lectures taken right from my book as well as exclusive classroom type case studies. What is so special about these classroom case studies? I pull live problem vehicles directly into my classroom and we troubleshoot them in real time, using and applying the theory and testing procedures we learn during the classroom lectures. There is no better on-line training of how to troubleshoot automotive electrical and electronics systems anywhere!
Disclaimer:
Due to factors beyond the control of ScannerDanner LLC, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. ScannerDanner LLC assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. ScannerDanner LLC recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of ScannerDanner LLC, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not ScannerDanner LLC.
Видео Honda-Acura Surging Idle Speed (case study) канала ScannerDanner
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