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Thread: Another option for $0D efan control

  1. #31
    EFI GearHead ! EagleMark's Avatar
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    I was thinking your an alright kinda guy with Dale Earnhardt for an avatar. But now with a diagram like that, I'm sure your going to be a great help around here!

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
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  2. #32
    Fuel Injected! PJG1173's Avatar
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    ok looked up those solid state relays $40+ not quite in the budget right now. guess this will have to wait and I'll concentrate on finishing the tune.
    87 4Runner, 15" spring lift, 3" body, chevy vortec 355, 5.29 gears, 38.5x15.5x15" Boggers, 280hr, 16168625 running $0D
    93 S10, 12" spring lift, 4.56 gears, F/R lockers, 36x12.5x15 TSL's, long tube headers, 266HR cam, p&p vortec heads, $0D Marine MPFI.
    05 Silverado, 2' lift, 4" exhaust, Bully Dog programmer,

  3. #33
    Vintage Methane Ejector
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    Quote Originally Posted by one92rs View Post
    now would this code be able to run this relay set up for a set of dual fans in a camaro from a 427 ecm. i understand that the power wires would need to be either ground or hot which is no problem. if i remember correctly it turns both fans on low for the first stage of temp. then on high if needed. i dont have a/c.
    No it won't work since the the second output is set-up for a transmission cooler fan. If you change the RAM over to coolant temp, then it would work for two fans without A/C. Also, you can't use the "Soft Start" section with those relays and wiring.

    I am working on a expanded version of the above code that will be more versatile, that the user could configure to cover a lot of different set-ups.

  4. #34
    Vintage Methane Ejector
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    Quote Originally Posted by PJG1173 View Post
    ok looked up those solid state relays $40+ not quite in the budget right now. guess this will have to wait and I'll concentrate on finishing the tune.
    Try these:
    http://www.amazon.com/HELLA-H4177300...9081378&sr=8-2

  5. #35
    EFI GearHead ! EagleMark's Avatar
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    I may be missing the obvious here but why wouldn't a regular/cheap/stock relay work?

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
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  6. #36
    Vintage Methane Ejector
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    The soft start code is PWM (Pulse-width modulation), it switches off and on rapidly to create a less than 100% output. This creates a fire storm inside a normal relay, leading to a very short life.

    The rest of the fan code can be used independently of the soft start, with normal relays
    Last edited by 93V8S10; 02-12-2012 at 03:17 PM.

  7. #37
    Fuel Injected! one92rs's Avatar
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    i didnt think that the soft start would work. the way the relays are wired they come on at about a 50% spin at the first temp set in the ecm and on high only if that is needed.

  8. #38
    Fuel Injected! PJG1173's Avatar
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    Quote Originally Posted by 93V8S10 View Post
    I think I'll order a few of these when I get my taxes back and wait for you to finish expanded code, since I don't need the trans fan for this truck. I will definatly be using it on my other truck when I get to it. I'm starting to get too many irons in the fire...

    BTW thanks for all the work you have done to support this community/hobby/addiction. I didn't realize until recently you wrote all the ADX files I pulled from tunerpro.net.
    Last edited by PJG1173; 02-13-2012 at 06:29 AM.
    87 4Runner, 15" spring lift, 3" body, chevy vortec 355, 5.29 gears, 38.5x15.5x15" Boggers, 280hr, 16168625 running $0D
    93 S10, 12" spring lift, 4.56 gears, F/R lockers, 36x12.5x15 TSL's, long tube headers, 266HR cam, p&p vortec heads, $0D Marine MPFI.
    05 Silverado, 2' lift, 4" exhaust, Bully Dog programmer,

  9. #39
    Vintage Methane Ejector
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    Thanks!

  10. #40
    Vintage Methane Ejector
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    Got the expanded fan code done for $E6 and $0D, $0E/$31 to come later. This should be able to run a wide variety of set-ups. I have tested the $0D for basic function, I'll leave the final testing up to you guys. Let me know if you find any problem and if you like/hate it. If you'll like it, then it may find it's way into the Advance v275.xdf.

    Enjoy:
    Attached Files Attached Files

  11. #41
    Fuel Injected! PJG1173's Avatar
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    If I can figure this out without blowing something up I'll try to implement this weekend and see how it goes.
    87 4Runner, 15" spring lift, 3" body, chevy vortec 355, 5.29 gears, 38.5x15.5x15" Boggers, 280hr, 16168625 running $0D
    93 S10, 12" spring lift, 4.56 gears, F/R lockers, 36x12.5x15 TSL's, long tube headers, 266HR cam, p&p vortec heads, $0D Marine MPFI.
    05 Silverado, 2' lift, 4" exhaust, Bully Dog programmer,

  12. #42
    Fuel Injected! PJG1173's Avatar
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    Ok working on getting this setup in my bin and I have a few questions.
    I have a dual speed fan
    1. if fan A is active will fan B be set to inactive or do I have to wire the relays so both the high and low relay's won't be energized at the same time?
    2. tps for fan on. is this the tps % if I want the fan to come on reguardless how fast I am going? will this override MPH for fan off?
    3. if I don't want to use MPH for fan off will leaving it at 0 disable it or do I need to set it at some really high number same with TPS?
    87 4Runner, 15" spring lift, 3" body, chevy vortec 355, 5.29 gears, 38.5x15.5x15" Boggers, 280hr, 16168625 running $0D
    93 S10, 12" spring lift, 4.56 gears, F/R lockers, 36x12.5x15 TSL's, long tube headers, 266HR cam, p&p vortec heads, $0D Marine MPFI.
    05 Silverado, 2' lift, 4" exhaust, Bully Dog programmer,

  13. #43
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    As a source for solid state, dual fan relays of automotive grade may I suggest 2003-ish and up Dodge Caravans? In the stock application one relay is used to control two fans independently. There are a couple of versions but both are fairly small and would easily mount in a 3" by 5" space. They are usually found on the LF frame rail, LH inner fender, LH side of bumper, or under the LH headlight. Be sure to mount them to a nice solid heat sink as they will get hot and will die if not cooled. Dorman 902310 (pictured with the connector) is typical of the version mounted on the bumper while Standard DR1088 is physically smaller and can be found on frame rail, inner fender, or under headlight. The 902310 is slightly more reliable but will require plenty of airflow for cooling. DR1088 should be mounted to a good, solid metal base which won't get too hot.
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    Last edited by 1project2many; 02-25-2012 at 04:44 AM.

  14. #44
    Fuel Injected! PJG1173's Avatar
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    Nice call 1project2many. I found this while looking up info on the caravan relay. "1996 to 2000 is on the frame rail under the air filter box.2001 to 2007 is in the front bumper on the passenger side.". $60 for the 902310 and $58 for the other I'll be looking in a JY for these.
    Last edited by PJG1173; 02-25-2012 at 05:37 AM.
    87 4Runner, 15" spring lift, 3" body, chevy vortec 355, 5.29 gears, 38.5x15.5x15" Boggers, 280hr, 16168625 running $0D
    93 S10, 12" spring lift, 4.56 gears, F/R lockers, 36x12.5x15 TSL's, long tube headers, 266HR cam, p&p vortec heads, $0D Marine MPFI.
    05 Silverado, 2' lift, 4" exhaust, Bully Dog programmer,

  15. #45
    Fuel Injected! JeepsAndGuns's Avatar
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    I only see 4 wires, on that plug there are two big and two small. How does that controll two fans? I would think the two small ones turn it on, and the two bing ones for the power (just like a normal relay)
    Or is there a seperate one for each fan?
    79 Jeep Cherokee, AMC 401, T-18 manual trans, hydroboost, 16197427 MPFI system---the toy

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