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Dohc on sohc with stand alone ecm

  • Gowen1988
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2 years 10 months ago #58552 by Gowen1988
Dohc on sohc with stand alone ecm was created by Gowen1988
Im trying to convert a 91 nissan ka24e 4pin distributor harness to run 98 frontier ka24de 6pin distributor and use a 3 wire coil on plug system. Im using a megasquirt pnp2 ecm. I don't want change the 91 ka24e wiring harness. The majority of the sohc connectors to sensors are different but wired the same. Main different is the ignition system and the distributor. How cab you wire the 4 pin ka24e distributor to run the 6 pin ka24de distributor and use a coil on plug setup? The 4 pin sohc has 12v, ground, 180° ref, 1° ref.
The 6 pin dohc has
1. Ignition A
2. ground
3. CKP signal - crank
4. CMP signal - cam
5. sensor ground
6. Ground
I've wired 12v to 1, Ground to 2, 1° to 4, 180° to 3. The pnp2 jumpers are configured for wasted spark and have pin outs for spark abcd, A&d wired together b&c wire together. 3 wire Denson coils 12v, Ground, signal all wired to 12v switch, Ground, 1&4 signal go to a&d @ ecu, 2&3 signal to b&c @ ecu.
When ignition is turned on coils get hot. What am I doing wrong? I assume I need a s14 engine harness plus a s14 to s13 adapter at ecu, or can this sohc harness run the dohc if wired correctly?

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  • Noah
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2 years 10 months ago #58568 by Noah
Replied by Noah on topic Dohc on sohc with stand alone ecm
I'm not sure I understand what exactly you're trying to do?
It's distributor, and waste spark and COP?
Are you just trying to use the distributor as a PCM input to fire cops? Why not just let the distributor do it's job if you can't eliminate it?
Or if the 'Squirt is configured for waste spark already, why not use a coil pack?
I have a Microsquirt ECU in my 5.0, as much as I would love to trash the distributor, there's really nothing to gain there (at least for my car).
If the coils are getting hot, they are turned on all the time.
You will probably have more luck asking people with a similar build.

"Ground cannot be checked with a 10mm socket"

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