Electric fan? - JeepForum.com

 
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post #1 of 12 Old 03-23-2016, 04:18 PM Thread Starter
AmnNeff
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Electric fan?

Alright I need some help with this stupid fan. I'm doing a 302 conversion in my 88 yj. Now most of the stuff came from novak for this build. It's a Spal fan and spal relay wired exactly how the diagram says to. But when the key is turned to the on position the fan runs full blast. Any suggestions on what to trouble shoot first?

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post #2 of 12 Old 03-23-2016, 06:10 PM
Luuca
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Quote:
Originally Posted by AmnNeff View Post
Alright I need some help with this stupid fan. I'm doing a 302 conversion in my 88 yj. Now most of the stuff came from novak for this build. It's a Spal fan and spal relay wired exactly how the diagram says to. But when the key is turned to the on position the fan runs full blast. Any suggestions on what to trouble shoot first?

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If there is only one relay, there's only one speed. How many wires are coming out of the fan?

EDIT: I guess I should have asked what the perceived problem is? The key is on, the fan runs. If you don't want it to run while starting you'll have to find a 12v source that kills when the ignition is engaged (like the radio does) and loop it in there. My LJ had an e-fan that was wired to a switch on my dash. It was either on full or off. So I ask you, what's the issue?

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post #3 of 12 Old 03-23-2016, 07:00 PM Thread Starter
AmnNeff
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Well according to the spal directions it's only supposed to kick the relay once the switch reaches 185 so I figured it shouldn't run until it hits that correct? Or does it have to actually be running to do this. And it's only two wire from the fan hot and ground.

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post #4 of 12 Old 03-23-2016, 07:01 PM Thread Starter
AmnNeff
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I just tried changing the relay and the switch same problem so I must have the wrong ignition wire.. the harness was all chopped up when I got it so I'm not sure what's what haha.

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post #5 of 12 Old 03-23-2016, 07:17 PM
jsawduste
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The relay is wired wrong haha.


Fan should not come on until the temp sensor reaches 185 and completes a circuit to ground.
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post #6 of 12 Old 03-23-2016, 07:25 PM Thread Starter
AmnNeff
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Yeah I figured must be the ignition wire I'm using.. because the other four are pretty straight forward 12 from battery, red hot from relay to red fan. Ground the fan, gray to switch, orange to ignition. So I need to find a wire that only turns on when I turn the ignition to start position? Because it's on a wire now that comes on when they key is in the run position.

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post #7 of 12 Old 03-23-2016, 07:49 PM
jsawduste
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30 main power to relay from battery
85 switched power
86 ground (fan thermo switch)
87 to fan positive

Fan ground to separate ground
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post #8 of 12 Old 03-23-2016, 08:27 PM
Luuca
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Originally Posted by jsawduste View Post
30 main power to relay from battery
85 switched power
86 ground (fan thermo switch)
87 to fan positive

Fan ground to separate ground
Where did he say he has a thermo switch? Did I miss it?

91 YJ "Alice" 4.0L, AX-15, NP 231 w/HnT Flange, Adams Driveshafts F/R, 2.5" OME 36Rs, 5/8" /f12 Booms, 32" Yoko ATs, 4.10 D30/35 Aussie Lockers F/R Busted Knuckles YJOTM never
05 LJ Rubicon "Ghost"

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post #9 of 12 Old 03-23-2016, 08:29 PM
jsawduste
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Thinking post 3
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post #10 of 12 Old 03-23-2016, 08:30 PM
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Post 6 also
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post #11 of 12 Old 03-23-2016, 08:38 PM Thread Starter
AmnNeff
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Post 6 and 3.. it's in the intake manifold of the 302.

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post #12 of 12 Old 03-23-2016, 08:46 PM
jsawduste
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Run the wires as posted earlier. Unless the switch is faulty it will work the I posted it.
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