E-Fan/Over Heating Issue?
06-22-2008, 09:43 PM
#11
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06-23-2008, 09:03 AM
#12
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its been 100* here and ive never had a issue with the stock Tstat or the rigged 170* Tstat..
Ill be willing to be the Polarity is backwards like he said..
I had a 3 bank relay setup to the A/C clutch switch.. Got tired of the fan kicking on and off so i ran that wire to a switch in the cab..
PCM tells the fans to come on low at 173 and off at 172
I can flip the switch and one fan comes on high, and then flip the other switch and both come on high..
Ill be willing to be the Polarity is backwards like he said..
I had a 3 bank relay setup to the A/C clutch switch.. Got tired of the fan kicking on and off so i ran that wire to a switch in the cab..
PCM tells the fans to come on low at 173 and off at 172
I can flip the switch and one fan comes on high, and then flip the other switch and both come on high..
06-23-2008, 11:22 AM
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06-23-2008, 07:45 PM
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You actually do want it to cycle with the A/C, if the fans are not allowed to cycle with the A/C there won't be enough airflow across the condenser when idle or slow speed driving. That will lead to high head pressure condition which can then cause blown A/C system O-rings, condenser failure, and puts alot of strain on the compressor. I know, I just went through this with a worn out clutch fan being the culprit. Good luck.
Here is my setup..
Green switch up top is my Fan #2 on high, Red LED Illuminates when the fan is on.
Red LED in the middle is illuminated when my Inverter is on.
Green LED illumnates when my Water pump for my Intercooler is on.
Red Switch at the bottom is to turn Fan 1 & 2 on low.
06-23-2008, 07:52 PM
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That Diagram is pretty easy, and it works.
I used 3 30amp Relays with Mini Switchs to manually turn them on.
If your havin problems i could make a harness for you.
Last edited by nonnieselman; 06-23-2008 at 07:55 PM. Reason: Wrong Picture
06-23-2008, 11:01 PM
#18
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Caspers also put in a delay so when the ac kick's on it doesn't draw all those amp's at one time! It's like a 3-5 second delay.
06-24-2008, 02:27 AM
#19
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Sounds pretty good....glad it all worked out for you.
Just a point....and there's surprisingly ALOT of people out there who think the fans are there to blow air past/onto the motor to cool it...not so. The fans DRAW air THROUGH the radiator to cool the fluid which then passes around the motor to cool it.
Just a point....and there's surprisingly ALOT of people out there who think the fans are there to blow air past/onto the motor to cool it...not so. The fans DRAW air THROUGH the radiator to cool the fluid which then passes around the motor to cool it.
