Getting My A$$ Kicked By an 86 Mustang (Part 1)

If you own and older Ford EEC-IV system, which spans from around 1984 -1995 with a TFI distributor ignition system, you will definitely want to follow this saga. Even if you do not own a car with this system, the procedures used and explained throughout this case study can be applied to ALL ignition systems where coil control is being lost.

Here are links to another great case study/class, on an EEC-IV system with a faulty distributor pick-up. This is the video I pulled the images from and used in this mustang video.
This is a good comparison video for what we are dealing with on the Mustang. These two videos are hosted on SD Premium on my website. Sign up for the 14 day free trail and watch these two videos! If you cancel your subscription anytime before the 14 days are up, you will not be charged the $11 for the next month AND you will get the remainder of the 14 days to check everything else out. There are close you 500 videos now including hundreds of lectures recorded from my classes at RTC
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2:35 - history and symptoms
4:17 - coil primary current waveform "coil control"
6:21 - description and operation and testing of the PIP signal (distributor pick-up)
13:21 - PIP signal with SPOUT unplugged
14:36 - the proper way to connect multiple grounds to your Snap-on scope
14:50 - battery voltage tests for a bad alternator diode
15:30 - a lesson on when to use AC coupling on a lab scope
20:42 - discussion of the PIP "clipping" and concern of a bad pick-up
23:35 - questioning the ignition coil and wiring between coil and module and testing the circuit to confirm
27:23 - chapter 3 playlist on premium https://www.scannerdanner.com/scanner...
29:15 - module pin inspection
30:15 - power and ground checks for the ignition module
34:40 - looking at PIP signal again, focused on the clipping, pretty sure at this point the pick-up is bad
39:25 - after walking away and looking at another car, we come back with some new thoughts
40:00 - PIP signal with SPOUT and Alternator unplugged and plugged in comparisons
46:00 - I am no longer sure of the pick-up
48:56 - discussion with Danner on where we are (module or pickup?)
53:51 - after discussion with my brother, we decide to check the pick-up signal directly
54:45 - last EEC IV video we did where the ICM did NOT need a ground    • Ford EEC-IV No Spark Diagnostics  
59:00 - the feed to the pick-up I mentioned doesn't look good. It is fine, the coil current ramps are causing a voltage drop because it is a shared circuit.
1:01:22 - why it wouldn't start with my jumper wire not grounded properly
1:04:07 - why I love working with my son Caleb!

ScannerDanner Tools:
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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.