s13 sr20det coil # 2,3,4 not firing

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supra7m2002
Posts: 71
Joined: Mon Sep 10, 2007 4:19 pm
Car: s14

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my sr20 redtop is not firing coil 2,3 and 4. but fires number 1 only. wth is wrong with this s***, motor ran great after a wiring change over it now does not have any of the coil other then number 1 firing.

i now need to know if anyone out there has a s13 factory service repair wiring diagram so I can check one wire at a time to see where they go. I have a s14 wiring diagram but it's totally different. so if anyone can think whats wrong or has a diagram of the complete engine wiring please let me know. thanks in advance


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James@CI
Posts: 141
Joined: Mon Jan 14, 2008 8:20 pm
Car: 89 Nissan 240sx with SR20DET
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Hey did you check to see if you are getting signal from the igniter chip and if so the problem i ran in with mine is were the main harness joins the ignition sub harness there was no conection in the plug.

supra7m2002
Posts: 71
Joined: Mon Sep 10, 2007 4:19 pm
Car: s14

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James@CI wrote:Hey did you check to see if you are getting signal from the igniter chip and if so the problem i ran in with mine is were the main harness joins the ignition sub harness there was no conection in the plug.
can you discribe more of this problem you had? also what was your car doing?

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James@CI
Posts: 141
Joined: Mon Jan 14, 2008 8:20 pm
Car: 89 Nissan 240sx with SR20DET
Contact:

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Well mine was just doing it to 4 and 2 they were not firing at all i thought mabye my igniter chip was bad so checked it.Well it was good so i check the signal wire at the coils nothing.So I knew there had to be a problem somwere in the wiring from the igniter to the coils and the problem was in the conector were the main harness connect to the ignition sub harness I just took the conector apart and redid the ins and no problem since.


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