Relay Clicking?

Discuss the RB20, RB25 and RB26 series engines.
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Kansei240sx
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Joined: Mon Nov 01, 2004 10:17 am
Car: S13 - RB25 Circuit car
71 240z - street/track day car
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Hey guys, i dont ask many questions, but i have one thats bugging me and i cant figure out why its doing it.

Ok, now i wired up my SAFCII about half a year ago and since then its been down, and i had the same problem then....

Basically, when i turn the car to the ON position everything works fine, except my SAFCII. The two relays by my ECU go. Click......Click....Click in about one second intervals, and when the battery is drained it buzzes. I've tried several different batteries and i think as of yet its gone away when i turn it to ON. MY safc ALSO restarts, or... turns on i guess every time that relay clicks. So its like... it gets grounded or ungrounded, or it gets power on and off every click of the relay.....

When i start it up its fine though and everything seems normal... Its just... when i turn the car off and pull out the key, those relays keep clicking and its annoying because i have to pop the kill switch out just to get it to stop.

Does anyone have an idea of what i did? I know SOMETHING is wrong, i just cant trace it.


Bluefire
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Joined: Fri Jun 06, 2003 6:07 am

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most likely a short... trace the wiring for the relay and look for shorts or damaged wiring

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URAS
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Car: 550hp RB26 in S13 and 450hp rb25 in R32
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haaha i had the same issue with our RB26 transplant.... im not sure hot i fixed it ithink it was a bad earth.I did so many checks and minor improvements..when i was finished it was gone

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Kansei240sx
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Alright, I'll snoop around guys, ill update the situation of the problem when its fixed or not fixed. THANKS. If anyone else has something to contribute i appreciate it.

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Carl H
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Car: 1995 Nissan 240SX SE RB30DET

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most likely a ground thats not connected, the grounds near the intake manifold fully seated?

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Kansei240sx
Posts: 1356
Joined: Mon Nov 01, 2004 10:17 am
Car: S13 - RB25 Circuit car
71 240z - street/track day car
AE86 - Daily Drizzle/track day car
Z31t - Paper weight/street car
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Ok.... so when the SAFC is disconnected since i wired up a connector for it. The relays dont click when the battery cable is connected. The car will still start fine.... but wont rev past 3.

I turn the car off and pop the connector in and then turn it to acc and off again, and the relays start clicking again. I know this is an easy answer, but i want to make sure, what does it sound like i need to do? Ground it elsewhere? I have it hooked up to the earthwire on the ECU.


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