How to fix the V6 faulty distributor issue CHEAP - Mazda MX-6 Forum
 
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post #1 of 8 (permalink) Old 1-19-13, 2:38 Thread Starter
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How to fix the V6 faulty distributor issue CHEAP

Hi all,

I recently bought a '96 V6 626 which lasted all of two days before it started hesitating and missing and generally running like someone with a peg-leg trying to steal a betacord.

I did the usual plugs and leads to no avail, then discovered the faulty distributor issue. I put the multimeter across the coil, and confirmed it was failing.

The Yanks use an external coil and a GM igniter which is $20 there and 11tybillion dollars here.

I had an LS1 coil lying around and a bit of research showed they use a built in igniter.

So with some quick testing, this proved to be a super easy install.



I dummied it up to prove the trigger signal from the ECU would operate the coil.



mmm dodgey

Connections A and B go to a good earth,
Connection C goes to the trigger wire on the 6 pin connector on the distributor (cut and join the wire, but leave the others connected to the distributor) and
The D wire goes to ignition power (cut the 3 pin plug wires from the distributor, there's only two on the plug. The thick black with white trace wire is coil power).

The distributor cap needs to have the plastic filed back over the coil trace, and a hole drilled. I fitted a 4mm bolt and a bunch of nuts to hang the coil lead on. When I get the new cap I'll do it properly.

Here's the semi temporary install. I'll update once I tidy it all up.



So there you go. All up it has cost me $20 for a cap (yet to be delivered from US ebay), $6 for a coil lead and I had 4 LS1 coils kicking about from another project, but they are cheap as anything. Sure beats the $500 wanted for another dizzy.
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post #2 of 8 (permalink) Old 1-21-13, 6:37
 
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Thread moved to 2G General for more exposure.

1997 MX-6 LS
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post #3 of 8 (permalink) Old 10-1-13, 14:14
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need some help with this

HI I have a 1993 mazda mx6 and would like to try this mod using the LS1 coil
what I wanted to know is the specific wiring to adapt the LS1 to the distributor connectors .
From what I can tell all I need from them is the coil power and trigger
but not sure if its the same as this 626 mentioned
Please clarify
Thank you
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post #4 of 8 (permalink) Old 10-1-13, 18:13 Thread Starter
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Quote:
Originally Posted by green93mx6 View Post
HI I have a 1993 mazda mx6 and would like to try this mod using the LS1 coil
what I wanted to know is the specific wiring to adapt the LS1 to the distributor connectors .
From what I can tell all I need from them is the coil power and trigger
but not sure if its the same as this 626 mentioned
Please clarify
Thank you
More info here:
626/mx6 Faulty Distributor Cheap Fix! - 1993-2002 (2.5L) V6 - Mazda626 Forums
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post #5 of 8 (permalink) Old 10-16-13, 14:50
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thank you

Looking forward to trying this out
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post #6 of 8 (permalink) Old 10-16-13, 22:41
 
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This looks like a whole new area to be explored.. I started searching for coils with built in igniters and there is so much out there that would make a standard HEI setup with external coil look like junk. This is also less wiring.
My question is does the tachometer still work?
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post #7 of 8 (permalink) Old 10-19-13, 23:37
 
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Thats a very good question , I would be interested to know as well .

96 MX6 M Edition,5 speed-cai-Dynomax testpipe/glasspack,Raven dual chamber/dual exit muffler-few interior mods;DD
95 MX6,I4 5 speed -cai-GReddy cat back-strut brace/bar;Main DD
2001 Hyundai Tiburon,auto
94 626,V6 automatic-sold
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post #8 of 8 (permalink) Old 11-2-14, 5:07 Thread Starter
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Hi, quick update. Car is long gone (traded in on an AWD LS1)
Tacho did indeed work, but the early 626 does not use an internal resistor in the tach. You MUST fit a 180k resistor on the early cars. Second gen had an internal resistor tach (which mine was) and didn't need one.
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