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Old Feb 13, 2004 | 02:52 PM
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Need Help

I need a full diagram from start to finish for the Fan Mod for a OBD I system. I think I just messed my friend car up ?!?!?!

Thanks...
Old Feb 13, 2004 | 02:57 PM
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http://www.fbody.com/members/safbody/faq/coolfan.htm
Old Feb 13, 2004 | 03:00 PM
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Heres another link: http://users.oco.net/xero/fanmod/
Old Feb 13, 2004 | 04:30 PM
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...and you didn't look on my page? You are that close to being disavowed!
Old Feb 13, 2004 | 05:08 PM
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Originally posted by shoebox
...and you didn't look on my page? You are that close to being disavowed!
I did, but your page does not show where the actual splices go. I went from memory and I believe I was wrong.

I always go to your webpage first
Old Feb 13, 2004 | 05:20 PM
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OK, I need more help. This is what happened. He wants to have two switches, mainly because we could not find a 3 way switch. But I like the two separate switches as well. I took it as I could hook each splice up separately and add a 12 volt source to trigger the high or low setting. By turning one on for low speed. Then turning the low speed off and the high speed on for high speed. At first I was able to get the low speed to work this way just fine. Then I tried the high speed and it didn't work, so I thought that maybe I needed to have both wires tripped in order for the high side to work. Once I did that nothing worked from that point on. The fans still come on automatically (thats what I thought I messed up. I thought I had fried the PCM ) But all is good Anyway, how the heck do I make this work? In a few minutes I am going to put up a diagram of the way that I wired it to help with the Diagnostic, but till then, shoot!
Old Feb 13, 2004 | 05:21 PM
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Originally posted by scoobysnax83
I did, but your page does not show where the actual splices go. I went from memory and I believe I was wrong.

I always go to your webpage first
Nothing worse than an electrician with a bad memory.
Old Feb 13, 2004 | 05:23 PM
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Originally posted by shoebox
Nothing worse than an electrician with a bad memory.
laugh it up
Old Feb 13, 2004 | 05:25 PM
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One problem is that you don't trigger the relays with power, you do it with ground. The power is only for LEDs if wanted.
Old Feb 13, 2004 | 05:28 PM
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you know, thats what I thought originally. I was like well, how the heck is that supposed to work. But I figured that maybe the wires that were spliced triggered the PCM and the PCM triggered the relays. I thought that that was the work around for the SES light. OK, I am using switches with integrated LEDs. Will the grounding of the splice be enough to power these? Or will I be SOL on the integrated Lights? I think that this is my whole problem. And worse case I may have fried a relay. That makes me happier
Old Feb 13, 2004 | 07:11 PM
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Originally posted by scoobysnax83
you know, thats what I thought originally. I was like well, how the heck is that supposed to work. But I figured that maybe the wires that were spliced triggered the PCM and the PCM triggered the relays. I thought that that was the work around for the SES light. OK, I am using switches with integrated LEDs. Will the grounding of the splice be enough to power these? Or will I be SOL on the integrated Lights? I think that this is my whole problem. And worse case I may have fried a relay. That makes me happier
I guess it depends on how the switches are configured. The pcm grounds the blue and green wires to operate the relays. You want your switches to do the same thing. So, you want your switch to pass a ground to the blue or green wire when it is operated.
Old Feb 13, 2004 | 07:21 PM
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make one switch to give ground to the green wire of the relay for low speed and for high speed, leave the first switch on and have the second switch give ground to the blue wires of the other 2 relays. All 3 relays need to be energized for high speed and low speed only needs one relay.(the one with the green wire)
Old Feb 13, 2004 | 07:30 PM
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Thanks a lot everyone. I knew it was something simple. I guess I'll give it another shot tomorrow. Hopefully I didn't really mess anything up We'll see....




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