jumping ecs relay = good idea?

ONLY for ADVANCED technical discussion about the 240sx!
AsanBBoy
Posts: 313
Joined: Sat May 24, 2003 9:39 am

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I have a s13 ka24de

I'm finishing up my turbo project but i've to come some problems. My safc was installed on pin 47 (engine control module) it supposed to be installed on pin 4 (main relay, eccs) but i cannot get my safc to turn on with that wire. Running my car with the safc on pin 47 gives me mixed resaults. Bad afrs, idles and dies, and sometime it runs right. Just to test, I put the safc's power wire where its to be, on pin 4. Safc doesn't turn on. I Start the car for teh hell of it and i get steady, but rich afrs (370cc injectors). I turn off the car. When i jump just the the wire for pin 4 in the eccs relay my safc turns on. wtf? Would it be a good idea to just jump both of the wires (both pin 4 and 47 go to the eccs relay) and run the car like this? (for a long period of time) I can't figure anything else to do.

Modified by AsanBBoy at 6:55 PM 10/12/2006

Modified by AsanBBoy at 6:57 PM 10/12/2006
Modified by AsanBBoy at 3:53 PM 10/13/2006


vancouverbc
Posts: 3197
Joined: Thu Oct 30, 2003 1:30 am
Car: 1991 240sx

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zerothread?id=200757

I posted pic of eccs relay and wiring in above thread. if you jumped those connection , you would destroy computer. anyway, it would not work. computer uses those connections to control everything.

AsanBBoy
Posts: 313
Joined: Sat May 24, 2003 9:39 am

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Can you perhaps get a clearer version of the pic? (no diagram needed) or type out what it says for the wires coming in/out of the eccs relay? thanks alot

vancouverbc
Posts: 3197
Joined: Thu Oct 30, 2003 1:30 am
Car: 1991 240sx

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link to online factory service manual in my signature

AsanBBoy
Posts: 313
Joined: Sat May 24, 2003 9:39 am

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Yeah i have the fsm, its just that i couldn't find that particular picture....

ugh im going crazy... btw cel should be on right if i cut the oxygen sensor wire.....?

vancouverbc
Posts: 3197
Joined: Thu Oct 30, 2003 1:30 am
Car: 1991 240sx

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Not sure why you would cut o2 wire. You could unplug it if it is causing problem. The wire is actually two wires in one so it is hard to mend. Not sure what you mean by cel.

AsanBBoy
Posts: 313
Joined: Sat May 24, 2003 9:39 am

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i cut it because i wanted to extend it to my down pipe. cel = check engine light

vancouverbc
Posts: 3197
Joined: Thu Oct 30, 2003 1:30 am
Car: 1991 240sx

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I cut mine and mended it back without it causing any problems but i wouldnt do it again. Lot of work.

AsanBBoy
Posts: 313
Joined: Sat May 24, 2003 9:39 am

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well hmm its seems to have nothing to do with o2 sensor. I'm having a electircal crisis. when i turn my ignition switch to "on" then switch it all the way to off or take the key out; my brake, oil, door open, seat belt and battery light stays on. then i step on the break pedal and it all goes away. As i do that i hear a relay click... my car used to be an automatic and when i did the swap i just jumped that neutral switch at the plug by the passnger side fuese box (like discribed in the thread zer...age=1)It ran great for the year and a half like this. Come time to install my turbo my brother decided to do this no idea why, but he did. It starts and everything but could it contribute to my problem? there was a time when i took out the fues for the back tail light (looking in the fsm, its also for the inhibutor switch) and put it back in then my eccs relay buzzed like crazy. it doesn't do it anymore tho.


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