E-Fan Amp Requirement
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Year: 2001
Model: Cherokee
Engine: 4.0L
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Does anyone know the actual current draw of the stock 2001 E-fan, not how big the fuse is but the actual current draw?
I'm working on setting up a delayed e-fan shut down for a hot soak misfire problem and I want to use this part:
http://www.wolstentech.com/products/...delayrelay.php
It is rated to 10 amp continuous or 20 amp momentary. I can wire in another relay if needed, but I already have this part and one more relay, I'd like to avoid a second relay unless it is really needed.
I really thought I'd find the answer to this on the forum, but wasn't able to find a number anywhere, just recommendations that that folks use relays rated at 30 or 40 amps...
Thanks guys! I'll do a write up on my e-fan delay after it's done. Plan is to have the fan always run for a specified amount of time after shut down. I'll also put a switch under the hood to turn that feature off in the winter.
I'm working on setting up a delayed e-fan shut down for a hot soak misfire problem and I want to use this part:
http://www.wolstentech.com/products/...delayrelay.php
It is rated to 10 amp continuous or 20 amp momentary. I can wire in another relay if needed, but I already have this part and one more relay, I'd like to avoid a second relay unless it is really needed.
I really thought I'd find the answer to this on the forum, but wasn't able to find a number anywhere, just recommendations that that folks use relays rated at 30 or 40 amps...
Thanks guys! I'll do a write up on my e-fan delay after it's done. Plan is to have the fan always run for a specified amount of time after shut down. I'll also put a switch under the hood to turn that feature off in the winter.
Last edited by BoulderXJ; 09-28-2012 at 11:20 PM.
#2
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Join Date: Apr 2009
Location: Boulder, CO
Posts: 44
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Year: 2001
Model: Cherokee
Engine: 4.0L
![Default](https://www.cherokeeforum.com/images/icons/icon1.gif)
I went ahead and tested the electric fan using my multimeter. Wasn't quite sure how it would go since my multimeter is only rated to 10A and I was afraid that the fan would pull more than that. I did wire a 20 amp fuse in line just in case.
Anyway, here's the scoop. Fan wired directly to the battery, nothing else in the circuit except the multimeter and 20 amp fuse.
At startup the fan pulls more current, I saw 16 amps, but this is momentary. I'd say that the current stabilizes in 1-2 seconds. Steady state current is 9 amps. So the delay off relay that I mentioned in my post above will work without having to add an additional circuit protection relay.
More posts to come once I get the parts in.
Anyway, here's the scoop. Fan wired directly to the battery, nothing else in the circuit except the multimeter and 20 amp fuse.
At startup the fan pulls more current, I saw 16 amps, but this is momentary. I'd say that the current stabilizes in 1-2 seconds. Steady state current is 9 amps. So the delay off relay that I mentioned in my post above will work without having to add an additional circuit protection relay.
More posts to come once I get the parts in.
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