Need help with electric fan
07-17-2015, 02:51 PM
#16
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Actually it's an mj, nobody on the mj forum was helping very much so I posted here too! As soon as the sun comes out and the rain stops I'll grab some pics!! I got a new phone cause my other phone broke so all my pics from the old phone are gone sadly 
but it's beautiful.
but it's beautiful.
07-17-2015, 05:24 PM
#17
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Year: 1998 Classic (I'll get it running soon....) and 02 Grand
Model: Cherokee (XJ)
Engine: 4.0
Actually, there's probably a better way to wire that. Since we probably don't want the e-fan to kill the battery, we don't want it to be able to run if the Jeep isn't running.
Easy way to make that happen is to supply power to the switch from a port on the inside fuse box that is hot only when the ignition is on.
Do all your grounding as before, out by the fan where the relay is mounted.
This way, when the ignition is off, there can be no power to the relay coil, so even if the switch is accidentally left on, the fan will be turned off when the ignition is turned off.
I just did this to my '97, and I should probably write it up. I did it a little differently than most do it, and I think it's a better approach.
Easy way to make that happen is to supply power to the switch from a port on the inside fuse box that is hot only when the ignition is on.
Do all your grounding as before, out by the fan where the relay is mounted.
This way, when the ignition is off, there can be no power to the relay coil, so even if the switch is accidentally left on, the fan will be turned off when the ignition is turned off.
I just did this to my '97, and I should probably write it up. I did it a little differently than most do it, and I think it's a better approach.
07-17-2015, 10:26 PM
#18
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Year: 1992
Model: Cherokee
Engine: 4.0L H.O.
Now, not to play devil's advocate here... But if your fan clutch is functioning properly(assuming you have a shroud) perhaps airflow is not the problem in your cooling system?
When caught in a thunderstorm, you get cold because you're wet. A scarf will prove to be a lousy substitute for an umbrella.
When caught in a thunderstorm, you get cold because you're wet. A scarf will prove to be a lousy substitute for an umbrella.
07-18-2015, 06:28 AM
#19
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Now, not to play devil's advocate here... But if your fan clutch is functioning properly(assuming you have a shroud) perhaps airflow is not the problem in your cooling system?
When caught in a thunderstorm, you get cold because you're wet. A scarf will prove to be a lousy substitute for an umbrella.
When caught in a thunderstorm, you get cold because you're wet. A scarf will prove to be a lousy substitute for an umbrella.
07-18-2015, 06:58 AM
#20
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Actually, there's probably a better way to wire that. Since we probably don't want the e-fan to kill the battery, we don't want it to be able to run if the Jeep isn't running.
Easy way to make that happen is to supply power to the switch from a port on the inside fuse box that is hot only when the ignition is on.
Do all your grounding as before, out by the fan where the relay is mounted.
This way, when the ignition is off, there can be no power to the relay coil, so even if the switch is accidentally left on, the fan will be turned off when the ignition is turned off.
I just did this to my '97, and I should probably write it up. I did it a little differently than most do it, and I think it's a better approach.
Easy way to make that happen is to supply power to the switch from a port on the inside fuse box that is hot only when the ignition is on.
Do all your grounding as before, out by the fan where the relay is mounted.
This way, when the ignition is off, there can be no power to the relay coil, so even if the switch is accidentally left on, the fan will be turned off when the ignition is turned off.
I just did this to my '97, and I should probably write it up. I did it a little differently than most do it, and I think it's a better approach.
07-19-2015, 03:10 AM
#21
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Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
Dont Mj 4 cyl have fan in center ? Unlike xj with left and right. Fan shroud and good clutch should be plenty.
Last edited by freegdr; 07-19-2015 at 03:13 AM.
07-19-2015, 07:38 AM
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07-19-2015, 07:48 AM
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Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
I thought it was 4cyl ooopppsss....Why not just hook it up to factory plug. And install a over ride switch ? Tap into temp switch on radiator with a on/on switch and your done. Sweet looking ride by the way.
Last edited by freegdr; 07-19-2015 at 07:55 AM.
07-19-2015, 07:50 AM
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07-19-2015, 08:00 AM
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Year: 1989 xj sport 2dr
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Engine: 12 hole bosch Injectors
No sensor on rad ? Never heard of one with only one fan from factory . No relaay on drriverrs fender
Last edited by freegdr; 07-19-2015 at 08:10 AM.
07-19-2015, 08:35 AM
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