 Adjustable Temp Electric Fans, Need help finding a sensor--page 2 |
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| computers4kids |
 Jan 28 2014, 09:11 PM
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Love these little cars!  Group: Members Posts: 2,443 Joined: 11-June 05 From: Port Townsend, WA Member No.: 4,253 Region Association: None  |
Currently I have dual electric fans, each on their own relay, that both come on around 180 degrees. I would like to reduce the fan noise from both fans coming on at once since my system stays cool easily and both fans tend to be overkill. I was thinking about having one fan come on around 180 degrees and the other come on if the temperature raises 10 degrees or so above. Fans 1 and 2 would also shut themselves off once each one dips 10 degrees below their set temps.
I see Jegs sells a kit that appears to do just this for around $150 that would control both fans. http://www.jegs.com/i/Derale/259/16789/10002/-1 Another possibility, would be to let Fan 1 continue to come on at 180 using the temp sender Renegade supplied, disconnecting the Fan 2. Jegs also sells the same adjustable unit for a single fan for $83. I would connect Fan 2 using the single controller for half the price. http://www.jegs.com/i/Derale/259/16779/10002/-1 What are your thoughts?     |
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| computers4kids |
Jan 28 2014, 10:27 PM
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#2
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Love these little cars! Group: Members Posts: 2,443 Joined: 11-June 05 From: Port Townsend, WA Member No.: 4,253 Region Association: None |
Just read BigKat's setup. Since I have two single speed fans, I like how he turns on both at 1/2 speed and then, only if, the temp rises to 190 then they kick on at full speed. All with three relays.
Question. Looking at his diagram, would the two different sensors represent the ECU pins (C1, C2) if I'm using standard sensors at not a ECU to trigger the fans? Does it matter where the sensors are mounted? Attached image(s) 
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| 76-914 |
Jan 29 2014, 09:28 AM
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#3
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Repeat Offender & Resident Subaru Antagonist Group: Members Posts: 13,663 Joined: 23-January 09 From: Temecula, CA Member No.: 9,964 Region Association: Southern California 
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QUOTE(computers4kids @ Jan 28 2014, 08:27 PM)  Just read BigKat's setup. Since I have two single speed fans, I like how he turns on both at 1/2 speed and then, only if, the temp rises to 190 then they kick on at full speed. All with three relays. Question. Looking at his diagram, would the two different sensors represent the ECU pins (C1, C2) if I'm using standard sensors at not a ECU to trigger the fans? Does it matter where the sensors are mounted? Correct on the c1/c2 pins. I would think that any N/O temp sensor(s) would work. Just need the circuit(s) to close to ground instead of 12v. That and the added relay would work. I don't know what your power plant is but I suspect you would want the sensors located close to the block. |
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Posts in this topic
computers4kids Adjustable Temp Electric Fans Jan 28 2014, 09:11 PM
r_towle Look at the 944 setup.....junkyard maybe.
I believ... Jan 28 2014, 09:20 PM 76-914 Can you switch with ground? If so (and courtesy of... Jan 28 2014, 09:24 PM Bruce Hinds An easy way is to use two sensors. Use one for in... Jan 28 2014, 09:54 PM jimkelly cheaper would be to install a second temp sensor f... Jan 28 2014, 09:57 PM computers4kids Two sensors sound like a super simple way to accom... Jan 28 2014, 10:06 PM
andys
Just read BigKat's setup. Since I have two ... Jan 29 2014, 11:08 AM jcd914 You could use something like the Audi/VW/Porsche 9... Jan 28 2014, 11:13 PM Bartlett 914 I would not use a sensor on the input. Only on the... Jan 29 2014, 11:20 AM mikesmith I recently installed a Painless F5 controller for ... Jan 29 2014, 03:30 PM 76-914
I recently installed a Painless F5 controller for... Jan 29 2014, 04:24 PM mikesmith
The PWM isn't entirely smooth, so now at a s... Jan 29 2014, 05:03 PM 76-914
[quote name='76-914' post='1990279' date='Ja... Jan 29 2014, 08:45 PM stugray Put both fans in series. They should run at half s... Jan 29 2014, 06:15 PM r_towle oh DUH....
My Eurovan has this.
Look for the temp... Jan 29 2014, 06:25 PM andys The circuit logic in BIGCAT83's schematic (how... Jan 29 2014, 07:36 PM computers4kids Lots of great information. OK. I'll run two ... Jan 29 2014, 09:07 PM Andyrew When I had my overheating problems (and still do..... Jan 29 2014, 10:40 PM jimkelly c1 and c2 represent sensors that when active creat... Jan 30 2014, 07:17 AM 76-914 Yes, c1 & c2 are grounds which when are contro... Jan 30 2014, 09:06 AM jimkelly thanks : )
back to graphic. Jan 30 2014, 09:22 AM computers4kids I went ahead and totally rewired my dual electric ... Feb 1 2014, 08:15 PM Mike Bellis
Any ideas how to source a 200 degree sensor that ... Feb 1 2014, 09:32 PM |
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