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Dec 28th, 2019
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 Ignition Coil
#1105990
03/08/21 02:34 AM
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Joined: Aug 2020
Posts: 122
OP
Wheeler
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Can any 12v ignition coil be swapped in ?
May need mine replaced and after looking around for them $$$ I thought the heck with that, why cant I just use an old canister type, Mitsubishi has two wires going to it, so does the others.
Anything special about the factory one over an aftermarket ?
91 (Gen1) Monty, 3.0L V6, Auto 4 Door.
Disabled Driver.
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Re: Ignition Coil
[Re: Trailmonkey]
#1106000
03/08/21 05:13 PM
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Joined: Aug 2020
Posts: 122
OP
Wheeler
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Found an aftermarket coil that fits the bill I think. For a Jeep JK.
1 ohm primary
12k ohm secondary.
Mine shows.
1.2 ohm primary
12k ohm secondary.
Shaped the same only the input plug is different. Thats easy i think, one is positive other is negative correct ?
91 (Gen1) Monty, 3.0L V6, Auto 4 Door.
Disabled Driver.
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Re: Ignition Coil
[Re: Trailmonkey]
#1106001
03/08/21 05:14 PM
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Joined: Aug 2020
Posts: 122
OP
Wheeler
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91 (Gen1) Monty, 3.0L V6, Auto 4 Door.
Disabled Driver.
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Re: Ignition Coil
[Re: Trailmonkey]
#1106005
03/08/21 08:12 PM
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Joined: Sep 2006
Posts: 2,657
Roll Me Over
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Why do you feel there is need to change the coil?
Cheers, Charlie
If It ain't broke, Modify it!
87 Montero turbo Converted back in Spring1989
95 Montero SR 3.8 DOHC Only one?
93 Pajero 3 door 6G75 Mivec with paddle shifted 5 speed
Then a Gen2 SR with full coil independent suspension.
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Re: Ignition Coil
[Re: Trailmonkey]
#1106011
03/09/21 04:44 AM
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Joined: Dec 2007
Posts: 2,303
Body Damage is Cool
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Is that the reading you got from your coil, or what the OEM specifications are?
89 SWB, V-6 5SPD, OME Shocks, 16.5X37's, 2"BL, SR axle, Gen2 brakes, Lincoln w/Superwinch
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Re: Ignition Coil
[Re: Trailmonkey]
#1106014
03/09/21 06:23 AM
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Joined: May 2012
Posts: 683
Rock Warrior
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If money is an issue, how about determining if the coil actually NEEDS to be replaced?
Go to mitsubishilinks.com and download the FSM (factory service manual). look in the ignition section. Pg 8-156 IIRC. That should give you the specs.
If it does need to be replaced then go to rockauto.com and buy an NGK for $15 or so.
90 LWB - Not your average bear
"You are what you are, and you ain't what you ain't." - John Prine
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Re: Ignition Coil
[Re: Trailmonkey]
#1106024
03/09/21 02:54 PM
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Joined: Aug 2020
Posts: 122
OP
Wheeler
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Well the truck just shut off in the middle of the road, turned over but no spark, got it home and looked it over and no spark at all, removed the coil and bench tested and in the (dark) you could see a faint spark, coil was getting hot also. Seen signs of it arcing over to the laminates as well.
Nothing else on the truck explains its actions.
Got local parts store to order a replacement for only $40...
Hopefully nothing else down the line is also out.
91 (Gen1) Monty, 3.0L V6, Auto 4 Door.
Disabled Driver.
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Re: Ignition Coil
[Re: Trailmonkey]
#1106028
03/09/21 07:34 PM
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Joined: May 2012
Posts: 683
Rock Warrior
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You should get on Facebook and ask for help there. I think the general community will be more your speed when it comes to how to throw parts at an issue until it's resolved. HTH 
90 LWB - Not your average bear
"You are what you are, and you ain't what you ain't." - John Prine
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Re: Ignition Coil
[Re: Trailmonkey]
#1106029
03/09/21 08:37 PM
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Joined: Sep 2006
Posts: 2,657
Roll Me Over
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How do you bench test an ignition coil?
Cheers, Charlie
If It ain't broke, Modify it!
87 Montero turbo Converted back in Spring1989
95 Montero SR 3.8 DOHC Only one?
93 Pajero 3 door 6G75 Mivec with paddle shifted 5 speed
Then a Gen2 SR with full coil independent suspension.
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Re: Ignition Coil
[Re: Trailmonkey]
#1106033
03/10/21 03:48 PM
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Joined: Aug 2020
Posts: 122
OP
Wheeler
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I dont have FB. Done away with that years ago.
Look on YouTube and it will show you how, but put simply hook a 12v+ straight to the coil, a 12v- with a normally open momentary switch. Sparkplug hooked to the coil and 12v- hooked to the metal of the plug. .
Activate the switch.
Switch closed charges the coil, release and it discharges via the plug.
91 (Gen1) Monty, 3.0L V6, Auto 4 Door.
Disabled Driver.
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