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@ frindtracing "I fixed it!" and, I took pictures.

Seems there is a pigtail from the main harness (starter side) that originates right under the piping into the injection manifold, then continues twisting first on one side and then through a lifting mount, under the O2 and thermal water sensor then terminates at the dreaded coil.

So, inside this pigtail is a heatshrink, thick rubber thingy. *NOITCE* there are 5 wires generated from the starter side yet only 4 that terminate into the coil pack. This is because a 5V wire actually terminates via 2 seperate 'resistors' into each white wire that terminates into the coil pack. This means one red 5v wire feed the coil and the other feeds each side of the coil. In my case because of the fact that the 02 and water were on top of the coil wires, and, the way they were wound, threaded, through the lifting bracket one of the legs of the resistors broke.

There fore this lift truck had intermittent seizures of only one side of the coil pack operating and this just happened to be on the 1/4 side. If it can happen to the 1/4 side it can happen to the 2/3 side of the coil as the 5th wire, which is red, terminates under the thick rubber heat shrink thingy but it actually has those afore mentioned resistors that it feeds into those white wires.

K, what I did as piks will show is, is that I tined each side if the broken leg of the resistor then stuck them together, vinal/black taped the white wires with the red and resistors and taped the plastic wire shroud back on AND instead of going through the lifting bracket I went over the top of the of the engine right into the coil pack. I then zip tied the 02, water sensor, and the ciol wires to the motor lifting brackets. And, the 70 is now running great and better than before because the intermittent coil firing has been fixed to a solid factory connection.

I ordered the pigtail and will replace my temporary fix and keep the temporary for a spare as there are two more 70's to fix plus a 90 and a 100 that are currently dead in the water or doing the '6th sense'....you know...the I see dead people thing? Well I see dead forklifts cuz they are actually there...

This site will not let me post piks and my morning time is getting short so I will give you all the pigtail harness #.

GFI
A7-274 REV C

SCT
A7274 REV C
  • Posted 10 Sep 2021 21:17
  • By michael59
  • joined 10 Jan'21 - 5 messages
  • Oregon, United States

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