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Unread 05-10-2015, 04:35 PM   #1
JeepdaddyRC
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What is this?

What is the wire with a "resister" in middle of the frame?

img_1008-640x446-.jpg

img_1009-640x406-.jpg

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Unread 05-10-2015, 04:42 PM   #2
RadioRadio
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Looks more like a diode, what is it connected to?
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Unread 05-10-2015, 05:22 PM   #3
JeepdaddyRC
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Here you go. One end coming out of loom by the CTO (disconnected by PO), the other attached to the throttle spring bracket.
img_1012-640x475-.jpg

img_1011-640x480-.jpg

img_1010-640x485-.jpg

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Unread 05-10-2015, 06:35 PM   #4
Scardad
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Looks like an early version of a flux capacitor...
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Unread 05-10-2015, 08:14 PM   #5
RadioRadio
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Interesting. Ok, Let me opine out loud here....maybe it can help your troubl shoot.

doesn't look stock, but I certainly am no expert.

If it is a resistor, it's way to small to be a ballast resistor. So it wouldn't be affecting ignition, directly.

If it's a diode....why would someone want to prevent reverse flow either to/from ground? And I'm assuming the spring bracket is attached to the carb, which is ultimately attached to the chassis....but it'd be a very poor place to ground anyway....

But regardless, it looks like it ties into that unplugged connector anyway, right? So it doesn't really matter, because it's not part of any circuit.

It may be an artifact from a nutter bypass? My jeep is pre-ecu era, do I have no experience with the nutter process.

Hopefully someone has better insight, sorry I couldn't be more help.
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Unread 05-10-2015, 08:22 PM   #6
Monohm
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If it is a diode would be a zener diode, which acts as a voltage regulator. A zener diode will prevent the voltage to be higher than its nominal value. Usually connected in parallel with the circuit's load.
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Unread 05-11-2015, 02:18 AM   #7
keith460
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Might be part of the old Idle Relay system that went through a Diode Assembly and operated a Solenoid Vacuum.

Pink wire with tracer?
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Unread 05-11-2015, 06:28 AM   #8
John Strenk
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Does this 83 have a computer originally or just the idle speed control box?


I agree with radioradio, odd, poor place for a ground.
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Unread 05-11-2015, 11:58 AM   #9
JeepdaddyRC
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John, the 83 does have the ECU. However, thanks to this great forum I completed the Nutter and Team Rush upgrade. This remains a puzzle!
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Unread 05-12-2015, 04:33 PM   #10
JeepdaddyRC
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Here is closer view. This is attached to an orange wire hooked to red wire with female connector that vanishes into loom by CTO. The other end is grounded at throttle return spring bracket. I'm stumped!
img_1034.jpg   img_1036.jpg   img_1038.jpg  
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Unread 05-12-2015, 06:48 PM   #11
hutch1200
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Could it be an electronic "idle increase circuit" for raising rpms when getting thru boulders?
I have no 258 experience, just a shot in the dark.
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Unread 05-12-2015, 07:45 PM   #12
John Strenk
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Unless we can find the other end, I don't think we can answer this...

I don't have a schematic of an 83 with ECU but in 84, they put 3 diodes in a pack and connected it to the Solvac solenoid. Maybe in 83, they didn't use the diode pack with ECU.
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Unread 05-13-2015, 03:36 AM   #13
Mike Romain
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It sure looks like a zener diode and my book shows one going to ground from the diode pack that ran the solvac.
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Unread 05-14-2015, 12:29 PM   #14
JeepdaddyRC
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The sol-vac is long gone. Can this little diode and its ground at the carb be eliminated?
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Unread 05-14-2015, 12:30 PM   #15
Mike Romain
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Quote:
Originally Posted by JeepdaddyRC View Post
The sol-vac is long gone. Can this little diode and its ground at the carb be eliminated?
Yes, it isn't part of the ignition, it was an ECU related part.
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89 YJ Renegade. BBD Carbed 4.0 HO. Locked front and rear with 33x9.5 BFG AT's
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