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RedRiceS14
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Joined: 17 May 2007 Posts: 40
Location: Wheeling WV
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| Posted: Mon Jun 25, 2007 5:58 pm Post subject: sr20 issues |
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ok so i jumped on the swap this week and its in and wired up
everything works but when i try to start it i have a spark issue
its only fireing on number 3 and the ignitor is gettin hot as all hell
my friend brian used the Fsm to check the ignitor and he believes its bad
tonight im goin to plug my ignitor into kyles redtop and if it doesnt start then i guess i found my problem if not then......shit i dunno
any input will help |
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laxian Guest
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| Posted: Mon Jun 25, 2007 7:42 pm Post subject: |
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yea i have no idea about the igntion system on sr's, but im guessing a ignitor is similar to my direct ignition cassette, which if failing would give about the same symptoms. Thats a good place to start at least. Make sure all your vac lines are connected too, the wrong thing not getting a signal will make everything act all goofy. |
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DSMdave
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Joined: 06 Feb 2007 Posts: 252
Location: claysville
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| Posted: Tue Jun 26, 2007 8:03 am Post subject: |
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hot as hell spells bad coil/bad delivery in my book also.... My cop got very hot when it went bad...I guess it didn't have anywhere to send the juice it was building...kinda like an overcharged battery... _________________ -Dave..."fast, reliable, or cheap...pick two" |
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RedRiceS14
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Joined: 17 May 2007 Posts: 40
Location: Wheeling WV
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| Posted: Tue Jun 26, 2007 8:13 pm Post subject: |
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update: igniter is good i put it on an already running redtop and it starts no problem, so....we got good coils and igniter, now ive also found that just when i turn the key forward the igniter gets hot
my friend that did the wiring believes that the problem is in the wiring or the ecu, but if it was the ecu why would the igniter get hot? i understand that the igniter gets its power from the ecu but why would it "short" the igniter? eh my head hurts |
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laxian55 Site Admin User is Offline

Joined: 05 Feb 2007 Posts: 335
Location: WashPA
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| Posted: Wed Jun 27, 2007 7:56 am Post subject: |
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yea id bet on the wiring then for sure. _________________ Speedin from Sweden |
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DSMdave
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Joined: 06 Feb 2007 Posts: 252
Location: claysville
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| Posted: Thu Jun 28, 2007 7:29 am Post subject: |
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hum...I don't know...bad wiring would cause a hot spot in the wiring or no signal at all....bad wiring I would think wouldn't fire the car up and run it...unless what your saying is that it's firing with the key in the run position and the start position before the car starts...then it's a matter of finding the correct wire that sends a signal to the coils in start only untill the car is running...then it's on all the time... _________________ -Dave..."fast, reliable, or cheap...pick two" |
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RedRiceS14
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Joined: 17 May 2007 Posts: 40
Location: Wheeling WV
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| Posted: Thu Jun 28, 2007 3:34 pm Post subject: |
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update: put my ecu on my friends SR started right up, my friend compared the pins on it and they are suppose to be the same well.......there not so that leaves me with a possible late model sr20 out of the 180sx typex 97-98 so....the E5 ecu wont start the motor what i need is the J4 ecu and it should start
someone else had this problem and they posted it on a forum as "help igniter is getting very hot"
me and spoolinhybrid went through it all and this guy had all the same issues i had this is why we are leaning toward the late model SR |
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laxian55 Site Admin User is Offline

Joined: 05 Feb 2007 Posts: 335
Location: WashPA
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| Posted: Thu Jun 28, 2007 3:35 pm Post subject: |
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That would make a lot of sense. How hard is it to get a J4 ecu? _________________ Speedin from Sweden |
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RedRiceS14
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Joined: 17 May 2007 Posts: 40
Location: Wheeling WV
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| Posted: Thu Jun 28, 2007 3:46 pm Post subject: |
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i bought this swap from Slow motion in cbus
so im gonna ask them to find one
they say the motor will run so.....i need that ecu to make it run
but to answer your question there a little more difficult to get |
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RedRiceS14
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Joined: 17 May 2007 Posts: 40
Location: Wheeling WV
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| Posted: Thu Jun 28, 2007 10:56 pm Post subject: |
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more fuel for thought
i was looking at the ecu pin out for the E5 ecu and J4 ecu and found that the Ignition Signals are as follows fo the E5 Coil1-1 Coil2-2 Coild3-8 Coil4-9
now the J4 Coil1-1 Coil2-3 Coil3-5 Coil4-25
geeeee wonder why it dont start if i have an E5 computer with a J4 harness |
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SpoolinHybrid240
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Joined: 20 May 2007 Posts: 3
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| Posted: Fri Jun 29, 2007 12:07 am Post subject: |
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and its probably just gonna be easier for me to repin the coil wires and move that tach signal wire since we prob wont ever hear from slow mo because they cant answer their phones or call people back. |
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laxian55 Site Admin User is Offline

Joined: 05 Feb 2007 Posts: 335
Location: WashPA
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| Posted: Fri Jun 29, 2007 7:45 am Post subject: |
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Yea rewiring shouldnt be that bad, and prolly way faster than trying to get ahold of them. I heard they had pretty good service, but any tuning company can be real hard to get ah.old of when you need them too. If you repin that harness, the old style ecu should be able to supply the correct signal tho? _________________ Speedin from Sweden |
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Guest
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| Posted: Fri Jun 29, 2007 1:14 pm Post subject: |
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ya everything is the same and the pinout for the rest is the same. you just move the tach signal wire over one and put the coil pins in the right spot. the blanks you have left over are blank anyway on the e5 ecu. he just called again today and they gave him another....oh well we are waiting for the importer to call back bullshit.. so they told him they will call back by the end of the day and if they dont then im gonna just repin it. its not worht the wait |
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RedRiceS14
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Joined: 17 May 2007 Posts: 40
Location: Wheeling WV
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| Posted: Fri Jun 29, 2007 11:33 pm Post subject: |
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tonight we are victorious
the repin worked
but im still irritated that they gave me the wrong ECU..........its a late Sr out of a 180sx type x for sure....and a J4 computer belongs there... |
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Howsare
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Joined: 06 Feb 2007 Posts: 139
Location: Amity,Pa
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| Posted: Sun Jul 01, 2007 7:54 pm Post subject: |
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what kinda car is it in? I hope I don't run into any of that stuff if I get something for my truck. _________________ <................................................................> |
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