Quick Diag and Fix for Persistent Misfire DTC : Board-Level Electronics Repair on Damaged Ford PCM
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- Опубликовано: 14 окт 2024
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Finally, a proper way of looking for bad MOSFETs.
I've started trying to fix ECUs for 2 months now and it bugged me really hard when i saw the experienced folks using continuity mode for checking any sort of MOSFET. Basically anything that didn't read bellow 50 ohms it was judged good and they look for problems elsewhere.
Great video, definitely very informative.
Also, what is that benchtop multimeter you're using? It's has a pretty dang fast auto range :D
Its a tektronix dmm4050 (also fluke 8846A is same thing)
that close space with a k tipe jbc tip 210 or 245
Good video on testing the ignition IGBTs. My repairs have not gone so smoothly. The igbt driver IC seems to be turning on 3 of them at the same time, burning up the current sensing resistors. (cylinders 1,3,6) This chip appears to be discontinued and has no useful data sheet, so I cannot find a substitute. I forget the number, since the scrap of paper I scribbled it on is at work with my wrenches. I will post the number tomorrow. Are these available at all?
Ah, here it is 74022PC, the gate driver IC.
The other parts are available.
Do not buy igbts labeled 5503GM or the logic gate labeled 74022. These are masked numbers ford used internally. Anything aftermarket is just fake chips that may or may not work. Use updated igbt from onsemi and a compatible 7402. Buy from real supplier like digikey or mouser.
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I want to repair Jeep 2007 Grand Cherokee 4.7pcm. How much does it cost?
Message me from my website www.keyworks.us and let me know the issues your having and I can get you a quote
1993 ford ranger xlt 4.0 v6 4x4. EEC iv efi-ma46g f37f-12a650-xb computer. Capacitors leaking. How much to repair it?
Use promocode "SAVE10" for extra 10% off cause I love doing those older ones. Specially if it needs some trace repair! Fun stuff. > keyworks.us/ford-lincoln-mercury/engine-control-module-repairs/ford-f-series-87-99-ecu-repair.html
@@ecurepair yes looks like the tiny traces around one of the capacitors need repaired.
Hope you send it in, Looking forward to getting it fixed up!
@@ecurepair the board says motorola 1991 how does the factory actually solder these? Looks robotic precision.
Im not sure but I assume most of it was done by pick and place machines and then wave soldered.
From dtech vido
Nice to have your visit! Hope you found some of my videos helpful.