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Hello All
My 1983 245 with 23F anf Lh injection was running rough, just enough to not
be testable for emissions here in GA. After replacing plugs, wires.cap and rotor
as well as fuel filter, the problem remained. After reading in this forum of the "biodegradable" wire i checked the harness. Sure thing nothing but bare wire.
To make it better it had been patched before and the insulation was gone well into the area under the manifold. The harness I am refering to is the one connected to the grey connector on the firewall. I read were another poster had replaced one wire at a time. I could do that!
While diging around in that mess I found the harness going to the fuel components was damaged as well. Keeping carefull notes I removed all the conectors but had to cut the fuel harness on the firewall. I made note of all
the wire colors and what they were associated with.
When the job was done I got no spark to the plugs. The engine would turn over and all lights worked(except oil light but it did not work beefore.)
I have spent the day with my haynees manual trying to make since of this. none of the ignition schematics line up perfectly with what I have. Mine seems to be a hybrid between the 1983 on diagram and the 1985 with b230 engine diagram. The jetronics diagram was right on since I ohmed every single wire in its harness and got the expected results. I checked the continuity of the wires I had run on the ignition curcuit and the came up good. But still no fire from coil.
I checked voltages and found 12V on the blue wire at ICU (ignition control unit) I have 12V on positive side of coil as well as 12V on neg side. Jumping pins A and B on the distriburator harness I can triger the ICU to bring a low on the neg side but the coil does not fire. The ICU ground is at .1 ohms resistance. The orenge wire going to the throttle position sensor reads ground through the normally closed switch.
NOTE the knock sensor broke and the wire is not conected to it. Is this important? I could find nothing in the book about it other than what it does.
Also I ran the alternator wire across the top of engine to battery positive, and spliced 2 yellow wires that go to starter together at top near former location of grey plug. This leaves 2 wires (Battery lead and Yellow start wire) at the starter.
I swaped the coil from wifes 88 245 to no avail. I dont think it is a component failure. It worked, I played with wires, now it dont work. Its my fault.
Thank you in advance for any help. Or atleast post back and call me a loser.
Sincerely
Joe Scott
AKA chainy
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