2002 Ford Escape 3.0 Misfire - ignition coils connected wrong

Описание: This vehicle came in with a long history, a severe misfire complaint that two shops couldn’t fix, and lots of parts changing along the way. Testing and careful analysis led to a surprising fix. All of the testing methods shown can be applied to any vehicle with a coil-on-plug ignition system.

Engine Performance Diagnostics chapter 1 page 2, 14 - 21

Symptoms
severe misfire
check engine light (P0300)
intermittent backfiring through intake

Fix
correct swapped #4 and #6 ignition coil connectors

Tests shown
how to perform a cylinder balance test (power balance)
using a coil-on-plug adapter with a lab scope for secondary ignition waveforms
analyzing secondary waveform attributes during misfire diagnosis
how to perform a relative compression test
how to use a coil current ramp as a sync trace
setting up a lab scope for various testing methods
how to use an in-cylinder pressure transducer to verify spark timing
how to get a primary ignition waveform (safely)

Tools used
scan tool http://www.aeswave.com/cart.php?m=aff...
Picoscope automotive 4 channel lab scope http://www.aeswave.com/cart.php?m=aff...
Fluke PV350 pressure transducer https://www.jbtoolsales.com/fluke-pv3...
inductive low amp probe http://www.aeswave.com/cart.php?m=aff...

Playlist
(Chapter 1) Misfire ID, Compression Tests, Vacuum Leaks, Fuel Trim, Head Gasket, Restricted Exhaust, Low Power, DMM
   • (Chapter 1) Misfire ID, Compression Tests,...  

Related videos
2004 Mazda MPV Low Power Case Study
   • 2004 Mazda MPV Low Power Case Study  
Ignition testing with a scope (Secondary Waveforms) - open plug wire
   • Ignition testing with a scope (Secondary W...  
Secondary Ignition Waveforms (common faults)
   • Secondary Ignition Waveforms (common faults)  
How to determine which cylinder is misfiring (cylinder drop test)
   • How to determine which cylinder is misfiri...  
How to check for a jumped timing chain or belt
   • How to check for a jumped timing chain or ...  

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-sc... 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.