Electric cooling fan
#2
Lives on the Forum
I found an "adjustable fan controller" at Autozone for under 20 bucks. It has worked great for nearly 3 years now. Most others are around 50 dollars because they have added functions for A/C. Sorry I don't have a part number or anything for you...
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#3
common sense prevails....
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good thread here....I was wondering why you could not tie a relay into the temp switch that is in the water pump housing. According to the FSM it switches on about 150-160F. According to the Factory wiring diagram the pump switches power. You should be able to connect this to a bosch style relay and disco!!
Anyone done this or thought about it??
$5 for a relay vs. $20+ for another switch and it would make for a super sano installation.
Just a thought!!
Anyone done this or thought about it??
$5 for a relay vs. $20+ for another switch and it would make for a super sano installation.
Just a thought!!
#4
Stu-Tron Get Yo Groove On
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good thread here....I was wondering why you could not tie a relay into the temp switch that is in the water pump housing. According to the FSM it switches on about 150-160F. According to the Factory wiring diagram the pump switches power. You should be able to connect this to a bosch style relay and disco!!
Anyone done this or thought about it??
$5 for a relay vs. $20+ for another switch and it would make for a super sano installation.
Just a thought!!
Anyone done this or thought about it??
$5 for a relay vs. $20+ for another switch and it would make for a super sano installation.
Just a thought!!
#6
Rotary Freak
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If you're running the stock thermostat, it opens at 180 deg F. Turning your fan on at temps below 180 deg F would seem useless. Likewise, I'd like my fan to turn off at some point if the engine cools back down (like when I'm on the highway after being stuck in traffic). If you get a 185 deg on / 170 deg off switch, the fan won't turn off once it turns on -- until you shut the car off. For these reasons, I chose a switch that comes on at 210 deg, and switches off at 190 deg (Be Cool PN 75099). That way, it will cool the engine only when it really needs it.
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If you're running the stock thermostat, it opens at 180 deg F. Turning your fan on at temps below 180 deg F would seem useless. Likewise, I'd like my fan to turn off at some point if the engine cools back down (like when I'm on the highway after being stuck in traffic). If you get a 185 deg on / 170 deg off switch, the fan won't turn off once it turns on -- until you shut the car off. For these reasons, I chose a switch that comes on at 210 deg, and switches off at 190 deg (Be Cool PN 75099). That way, it will cool the engine only when it really needs it.
Where did you get the 75099 switch? Where does it get it's temperature reading from?
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#9
Resurrecting Gus
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Get the Painless wiring kit that has 200F on, and 185F off. I have used it on two separate projects and it works great. You can tap out the location on the back of the water pump housing to work with the sensor. The sensor that is in there is for the thermo controlled carburetor choke, and you can just yank it of there. Most of the time the temperature controlled chokes on these cars have quit working anyway.
http://store.summitracing.com/partde...5&autoview=sku
http://store.summitracing.com/partde...5&autoview=sku
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Get the Painless wiring kit that has 200F on, and 185F off. I have used it on two separate projects and it works great. You can tap out the location on the back of the water pump housing to work with the sensor. The sensor that is in there is for the thermo controlled carburetor choke, and you can just yank it of there. Most of the time the temperature controlled chokes on these cars have quit working anyway.
http://store.summitracing.com/partde...5&autoview=sku
http://store.summitracing.com/partde...5&autoview=sku
#12
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You know I got to thinking....oh and looking at the factory wiring diagram. I am going to try installing an electric fan this weekend. I am going to use 2 bosch style relays. I will tie into the factory water temp switch (behind the water pump housing). This will turn the fan on when the temp gets hot enough.... But here is the twist.... It was mentioned that you don't need the fan at highway speeds so I am going to tie into the overdrive switch in the transmission to turn off the fan when I shift into OD.
That way anytime the engine temp gets hot enough...fan on... OD in gear and driving highway speeds....Fan off.
I will post my findings.
That way anytime the engine temp gets hot enough...fan on... OD in gear and driving highway speeds....Fan off.
I will post my findings.
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You know I got to thinking....oh and looking at the factory wiring diagram. I am going to try installing an electric fan this weekend. I am going to use 2 bosch style relays. I will tie into the factory water temp switch (behind the water pump housing). This will turn the fan on when the temp gets hot enough.... But here is the twist.... It was mentioned that you don't need the fan at highway speeds so I am going to tie into the overdrive switch in the transmission to turn off the fan when I shift into OD.
That way anytime the engine temp gets hot enough...fan on... OD in gear and driving highway speeds....Fan off.
I will post my findings.
That way anytime the engine temp gets hot enough...fan on... OD in gear and driving highway speeds....Fan off.
I will post my findings.
What are the caveats to using this and not the FAN-THOM painless kit?
Last edited by dgmorr; 09-09-08 at 11:02 AM.
#14
common sense prevails....
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No it is B-10 on the wiring diagram. I can't think of any caveats to this setup. You are using factory switches with some good old fashioned bosch style relays. I thing by using the Overdrive switch it will be cool shutting off the fan at highway speeds as well.
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Isn't B10 the emission control unit?
#16
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Well I went and looked back. B-10 is the water temp switch for California Emissions. B-08 is the one for "other than California"
Regardless of B-whatever... you want the switch that goes to the Hot start relay.
Also...my car is a 1980. Might be different for different year models.
Regardless of B-whatever... you want the switch that goes to the Hot start relay.
Also...my car is a 1980. Might be different for different year models.
#17
Resurrecting Gus
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As far as the threads in the water pump housing, they are some kind of funky metric thread size. I haven't ever been able to figure out what the thread is. I doubt that you'd be able to find an adapter for it, but it is always worth a try. If anyone has it, www.McMaster.com will.
The choke sensor thread size is VERY close to the 3/8-18 NPT of the Painless kit, but they are NOT the same. When you first try to put the sensor in the hole you can almost convince yourself that they are the same thread, but they ARE NOT. Don't try to force the painless sensor into the threaded hole because you'll end up wishing you hadn't. Your best bet is either:
1) Find an adapter for the choke sensor to 3/8-18 NPT.
2) Spend an hour pulling the water pump housing off, tap it for 3/8-18 NPT and be done.
If you run into any problems along the way I'd be glad to help. I can provide pictures if necessary too.
Jamie
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I use the probe that goes into the radiator fins. Adjustable temp.
http://store.summitracing.com/partde...5&autoview=sku
http://store.summitracing.com/partde...5&autoview=sku
#21
Lapping = Fapping
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^ Look at Youtube much?
Hey DriveFast7, I picked up one of those adjustable probes like you posted, but found it locally at Autozone. I just looked at it through the bag and it looks like the same sensor unit and stainless steel probe. I can't wait to try it on my next project.
Hey DriveFast7, I picked up one of those adjustable probes like you posted, but found it locally at Autozone. I just looked at it through the bag and it looks like the same sensor unit and stainless steel probe. I can't wait to try it on my next project.
#23
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It has worked fine for me for nearly 3 years. Adjust it to come on where you want it to, then forget about it... I got the one from Autozone too, about 20 bucks.
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Kentetsu, Is this what you used for the control?
http://www.autozone.com/R,3131/initi...ductDetail.htm
http://www.autozone.com/R,3131/initi...ductDetail.htm