| wiring diagram and eng throttle stop [message #337702] |
Mon, 08 October 2018 15:26  |
lqqkatjon
Messages: 2324
Registered: October 2010
Location: St. Cloud, MN
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I went out and assisted someone with a problem with there 78 Royale, with a 403 engine.
What looks to me what happened, is that where there used to be a Throttle stop solenoid(emissions piece?) that is no longer there, the connector was still hanging loose.
a wire(I believe some tanish color) came out of the connector and welded itself to the engine and smoked that wire. It toasted what I think was all the way into the wiring loom on passenger side, burnt off what was the feed to the distributor, and then cooked the rest of the wire up near the harness block.
there was a green wire still isolated on the connector.
I spliced onto a black with green stripe wire, that also looks to be the correct feed to the distributor, and ran a new wire to the distributor to get the engine fired back up.
I pulled the green wire out of the loom that was on that connector and zip tied it up by the harness block. (used it to help feed the new distributor wire through the loom).
Luckily no other wires were cooked in the wiring harness.
Looking at the wiring diagram now,(not at gas station parking lot), I see a box with the letters CX in it showing a wire color change from pink to black double white stripe that is feeding the distributor.
then looking at the other side of the throttle stop solenoid in the diagram, there is a box with the letters FY.
just trying to learn what those mean? I am guessing CX is basically the harness block. the colors in this diagram seem to vary from the wires I found, but the "pink" wire would of been the burnt to hell one, as what parts where left of the insulation looked tan to me. and the other wire in that connector sure looked way more green then light blue.
here is the wiring diagram I am looking at:
http://www.bdub.net/wirediagrams/78-transmode-chassis-electrolevel-II.pdf
Jon Roche
75 palm beach
EBL EFI, manny headers, Micro Level, rebuilt most of coach now.
St. Cloud, MN
http://lqqkatjon.blogspot.com/
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