Car gets no spark until you let the key go.
Posted 24 July 2002 - 04:28 PM
Posted 24 July 2002 - 04:53 PM
Posted 25 July 2002 - 06:53 PM
I have some "creative" wiring done on my 260 that I am going to have to fix, and evidently it must have had the same problem, because the previous owner "fixed" it. I have a replacement harness that I am going to put in and see if I can't get it wired back properly. when I get around to it, I will let you know what I find.
Oh yeah, I forgot, you do have the one yellow wire that connects to the harness down by the ecu connected and run to the coil right? That would keep it from firing.
Posted 25 July 2002 - 07:32 PM
You arent the same guy that has the black 280z turbo are you? The one that used to have stripes.
Posted 26 July 2002 - 05:51 PM
I wonder if you are not having a problem with that relay since the car fires when you mess with it. You also have the wiring for the fuseable links over there too. I wish I had my copies of the harness, but my bud has them. I guess I need to get them back.
I would get the harness problem situated. No sense chasing a ghost when you start with the SDS. You really need a factory manual so you can test the components.
Posted 27 July 2002 - 11:56 PM
Posted 27 July 2002 - 04:57 PM
Posted 28 July 2002 - 09:03 AM
But, I do have a Factory Datsun 78 Manual. Its Ignition Chart has the powerflow as such:
Power begins at the,
1) Battery, from the + Post, to the
2) Ignition switch, from the Ignition switch
3) The circuit splits into two wires: Both of these are "Black & White" wires, from the split
4) One "Black & White" wire goes directly to the + side of the coil
4a) The other "Black & White" wire goes into the Transistor Ignition Module, which
5) Powers the Transistor Ignition Module
*NOTE: From the Picture of the Transistor Ign.Module there appears to be 4 separate control functions:
a) Spark Timing, Signal Monitoring circuit
b) Lock Preventing circuit
c) Duty Control circuit
d) Power Switching circuit
It is the a) Spark Switching circuit that exits the module & attaches to the - (negative) side of the coil: this wire should be a "L" color; I'm guessing "L" means Light Colored(?).
6) Then there are two other wires at the Transistor Ign.Mod: "Red & Green"
a) One: one wire coming from the distributor
b) Two: one wire going to the distributor
*NOTE: The book is kind've confusing on how the "Red" or "Green" wire is hooked up to the distributor: it merely shows a terminal block at the dist. PERHAPS IT IS THIS TERMINAL BLOCK THAT WAS HOOKED UP BACKWARDS; interupting the polarity?
And that is it. The book doesnt go into detail about each circuit; simply shows the diagram.
I would venture in guessing that, in your harness replacement, you either crossed a wire to the ignition switch or crossed a wire going to the Transistor Ign. Module.
A final guess could be that:
1) the ignition switch has failed
2) the Transistor Ign.Mod. has failed or
3) one of the components has failed & you also may have crossed a wire in your installation of the new harness.
Hope this helped.
(Yea,Still an Inliner)
0 user(s) are reading this topic
0 members, 0 guests, 0 anonymous users