 Water Cooled Question, Fan sequencing / works great! |
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| 76-914 |
  Dec 6 2013, 11:18 AM
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#1
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Repeat Offender & Resident Subaru Antagonist  Group: Members Posts: 13,634 Joined: 23-January 09 From: Temecula, CA Member No.: 9,964 Region Association: Southern California 
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For my Suby 6 conversion I've installed a twin fan system (from a Dodge) on my radiator. One is single speed (3 wire) and the other is 2 speed (4 wire). Which one of these 2 fans comes on first? Do they both run at times? Will I use the 2nd speed of the 2 speed motor?
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| 76-914 |
Sep 1 2014, 10:06 AM
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#2
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Repeat Offender & Resident Subaru Antagonist Group: Members Posts: 13,634 Joined: 23-January 09 From: Temecula, CA Member No.: 9,964 Region Association: Southern California
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Thought I'd add this bit of info re: this style system. Last week I noticed that my fans were working on low but when switched to high (yeah, I was chasing a cooling issue) it dropped to Fan #2, only. Following the chart I was able to determine that relay F, in my case, (relay 3 in the diagram) was at fault. I was quite proud of my diagnostic abilities and proceeded to remove said relay to bench test and verify what I knew to be the problem. But the relay tested good. (IMG:style_emoticons/default/WTF.gif) If it had been a snake it would have bitten me. And it's not like I didn't know it was there; I built the damned thing. I just forgot they were there. The fuses are now labeled for my benefit in case I blow another one. So if this one blows I get the above described scenario, however if the other one blew I think none of the fans would operate but you might want to double check me on that one. (IMG:style_emoticons/default/biggrin.gif)
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| messix |
Sep 1 2014, 10:54 AM
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#3
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AKA "CLUTCH KILLER"! Group: Members Posts: 6,995 Joined: 14-April 05 From: between shit kickers and pinky lifters/ puget sound wa.north of Seattle south of Canada Member No.: 3,931 Region Association: Pacific Northwest |
QUOTE(76-914 @ Sep 1 2014, 09:06 AM)  Thought I'd add this bit of info re: this style system. Last week I noticed that my fans were working on low but when switched to high (yeah, I was chasing a cooling issue) it dropped to Fan #2, only. Following the chart I was able to determine that relay F, in my case, (relay 3 in the diagram) was at fault. I was quite proud of my diagnostic abilities and proceeded to remove said relay to bench test and verify what I knew to be the problem. But the relay tested good. (IMG:style_emoticons/default/WTF.gif) If it had been a snake it would have bitten me. And it's not like I didn't know it was there; I built the damned thing. I just forgot they were there. The fuses are now labeled for my benefit in case I blow another one. So if this one blows I get the above described scenario, however if the other one blew I think none of the fans would operate but you might want to double check me on that one. (IMG:style_emoticons/default/biggrin.gif) you are correct. I think if I built that circuit I would have activated the high speed on relay #2 from the 87 pole on relay #3. if the relay switching speed is not the same it would "buck" power. so to do so you would run 2 wires off the 87 pole on relay #3, one to the fan and the other to the relay#2 at pole #85. only one high speed wire from the harness. |
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Posts in this topic
76-914 Water Cooled Question Dec 6 2013, 11:18 AM
mikesmith
For my Suby 6 conversion I've installed a twi... Dec 6 2013, 11:29 AM 76-914 I'm using the stock OEM Suby ECU. Dec 6 2013, 12:30 PM mikesmith Based on a quick Google search, it looks like ther... Dec 6 2013, 02:40 PM BIGKAT_83 I would turn the two speed on first at low speed a... Dec 6 2013, 04:58 PM
mgp4591
I would turn the two speed on first at low speed ... Dec 6 2013, 06:28 PM 76-914
I would turn the two speed on first at low speed ... Dec 7 2013, 08:41 PM
andys
I would turn the two speed on first at low speed ... Dec 9 2013, 01:21 PM BIGKAT_83
I would turn the two speed on first at low speed... Dec 9 2013, 01:45 PM BIGKAT_83 Started with a EG 3.3 and have since changed to a ... Dec 6 2013, 06:34 PM mgp4591
Started with a EG 3.3 and have since changed to a... Dec 6 2013, 06:50 PM Tom Old engineering principle , KISS. The more complic... Dec 6 2013, 07:17 PM mgp4591
Old engineering principle , KISS. The more compli... Dec 6 2013, 09:06 PM Mike Bellis I have mine on a dual thermostatic relays. They al... Dec 6 2013, 09:33 PM 76-914
I have mine on a dual thermostatic relays. They a... Dec 7 2013, 08:43 PM 76-914 Help :blink: I'm trying to figure this schema... Dec 8 2013, 08:41 PM Mike Bellis
Help :blink: I'm trying to figure this schem... Dec 8 2013, 09:22 PM Tom Kent,
It looks like both pins 33 and 42 would n... Dec 9 2013, 02:16 AM Chris H. Kent,
Don't want to throw a wrench into thin... Dec 9 2013, 09:48 AM BIGKAT_83 You can cool these subarus with almost anything. T... Dec 9 2013, 10:24 AM Chris H. What the... Bob you have one of every motorized th... Dec 9 2013, 10:31 AM CptTripps That is an awesome setup! Lots less intrusive ... Dec 9 2013, 12:29 PM CptTripps I'm having one hell of a time locating a radia... Dec 9 2013, 07:12 PM Mike Bellis
I'm having one hell of a time locating a radi... Dec 9 2013, 08:02 PM skeates
I'm having one hell of a time locating a rad... Dec 10 2013, 01:08 PM Mike Bellis
A little "confection" goes a long way i... Dec 10 2013, 07:39 PM BIGKAT_83
I'm having one hell of a time locating a radi... Dec 10 2013, 05:49 AM 76-914 Mike & Tom, Thanks for explaining things to me... Dec 9 2013, 07:27 PM BIGKAT_83
Mike & Tom, Thanks for explaining things to m... Dec 9 2013, 07:34 PM 76-914 Spoke too soon. I see relay 2 powering Fan #1 @ hi... Dec 9 2013, 07:44 PM CptTripps That got me thinking...what about the front radiat... Dec 10 2013, 10:07 AM Mike Bellis
That got me thinking...what about the front radia... Dec 10 2013, 10:27 AM CptTripps YeH, that's what I'm thinking too. Looks a... Dec 10 2013, 12:35 PM 76-914 Got my fans & relays wired in tonite :Qarl: I... Dec 12 2013, 10:12 PM Chris H. Gotta bump this great thread...Just a quick questi... Aug 25 2014, 11:22 AM 76-914 Es verdad, Christo. Looks funny but think of stack... Aug 25 2014, 05:20 PM Chris H. Cool thanks Kent! Just seemed weird not groun... Aug 25 2014, 05:22 PM |
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