Bringing TBI and Multi Port Fuel Injection to a New Level.     EFI Conversions and Tuning! Seattle to Portland! E-mail Tuning Consultant!
Page 5 of 11 FirstFirst 12345678910 ... LastLast
Results 61 to 75 of 156

Thread: Another option for $0D efan control

  1. #61
    Vintage Methane Ejector
    Join Date
    Apr 2011
    Posts
    194
    Everything looks to be in order with the bin. I'll try and test it tomorrow.

  2. #62
    Vintage Methane Ejector
    Join Date
    Apr 2011
    Posts
    194
    What about using a "T" in the lower radiator hose? Thats how my S10 is.

  3. #63
    Fuel Injected! gregs78cam's Avatar
    Join Date
    May 2011
    Location
    N. Idaho
    Posts
    762
    Quote Originally Posted by 93V8S10 View Post
    What about using a "T" in the lower radiator hose? Thats how my S10 is.
    I have though about that too...... but I know that the water coming out of the back of the engine is hotter than that coming through the thermostat and I want that coolant to go though the radiator before it goes back into the engine.
    1978 Camaro Type LT, 383, Dual TBI, '7427, 4L80E
    1981 Camaro Z-28 Clone, T-Tops, 350/TH350
    1981 Camaro Berlinetta, V-6, 3spd
    1974 Chevy/GMC Truck, '90 TBI 350, '7427, TH350, NP203, 6" lift, 35s

  4. #64
    EFI GearHead ! EagleMark's Avatar
    Join Date
    Feb 2011
    Location
    North Idaho
    Age
    57
    Posts
    10,477
    Quote Originally Posted by gregs78cam View Post
    Because the coolant flows through engine, out the back of the manifold, through the heater core and finally back to pump
    Fixed it for ya!

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
    -= =-

  5. #65
    Fuel Injected! gregs78cam's Avatar
    Join Date
    May 2011
    Location
    N. Idaho
    Posts
    762
    HAHAHA. yup it runs better already.
    1978 Camaro Type LT, 383, Dual TBI, '7427, 4L80E
    1981 Camaro Z-28 Clone, T-Tops, 350/TH350
    1981 Camaro Berlinetta, V-6, 3spd
    1974 Chevy/GMC Truck, '90 TBI 350, '7427, TH350, NP203, 6" lift, 35s

  6. #66
    Fuel Injected! one92rs's Avatar
    Join Date
    Apr 2011
    Posts
    173
    i cant wait till this is completed and working.

  7. #67
    EFI GearHead ! EagleMark's Avatar
    Join Date
    Feb 2011
    Location
    North Idaho
    Age
    57
    Posts
    10,477
    Quote Originally Posted by gregs78cam View Post
    HAHAHA. yup it runs better already.
    I was serious... why is it going from heater core to radiator then pump?

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
    -= =-

  8. #68
    Fuel Injected! gregs78cam's Avatar
    Join Date
    May 2011
    Location
    N. Idaho
    Posts
    762
    So that the HOT coolant gets cooled off before returning to engine? Important during summer, but something to overcome in spring and fall. I have seen GM OEM setups that are the same way, but I think some have a bypass valve in there somewhere.


    http://shopacdelco.amazonwebstore.co...B0016I4ESE.htm
    Last edited by gregs78cam; 02-25-2012 at 08:55 PM.
    1978 Camaro Type LT, 383, Dual TBI, '7427, 4L80E
    1981 Camaro Z-28 Clone, T-Tops, 350/TH350
    1981 Camaro Berlinetta, V-6, 3spd
    1974 Chevy/GMC Truck, '90 TBI 350, '7427, TH350, NP203, 6" lift, 35s

  9. #69
    Fuel Injected! one92rs's Avatar
    Join Date
    Apr 2011
    Posts
    173


    this is the one that is on my 92 camaro. same but without the electronics. on mine the top two fittings flow when vacuum is applied bypassing the heater core.goes from the rear engine port to 5/8 top port. then from 3/4 top port to the tube leading to the radiator and ties in with the 3/4 fitting on the heater core. and the 5/8 heater core fitting to the bottom. when the engine is running no heater there is vacuum letting the top two run. turn on heater and vacuum goes allowing the 2 5/8 move thru allowing heater core movement.

  10. #70
    EFI GearHead ! EagleMark's Avatar
    Join Date
    Feb 2011
    Location
    North Idaho
    Age
    57
    Posts
    10,477
    That may do the trick, but the way it is now... no wonder it takes so long to warm up... probably takes forever to get good heat too? I'll look at my Suburban tomorrow and see how it's plumbed. I don't remember a heater line going to radiator but been a long time since I did any cooling system work on it. Big four core radiator, oil cooler, trans cooler from factory. Will idle with AC on in parking lot at 90f and never hit 200 before clutch fan kicks in...

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
    -= =-

  11. #71
    Fuel Injected! jim_in_dorris's Avatar
    Join Date
    Dec 2011
    Posts
    768
    Well, I was looking at this code and wondering about something. Since I don't need a fan for a transmission cooler fan, I could use that output for my fuel pump project. What I a curious about is using the Soft Start Idea to use a single speed fan and control it at different speeds.
    Square body stepsides forever!!!

  12. #72
    Vintage Methane Ejector
    Join Date
    Apr 2011
    Posts
    194
    One thing to keep in mind is that the bypass valves were used to improve A/C function by stopping flow to the heater core when the A/C is set to max and had nothing to do with warming-up. You could use one in your situation to stop the flow through the radiator while cold. You would have to rig something up to control the vacuum.


    Quote Originally Posted by jim_in_dorris View Post
    Well, I was looking at this code and wondering about something. Since I don't need a fan for a transmission cooler fan, I could use that output for my fuel pump project. What I a curious about is using the Soft Start Idea to use a single speed fan and control it at different speeds.
    That could be done, would need to write some code that uses a look-up table (temp vs DC) instead of a timer. Also, could use some status bits (A/C, etc.) to select different DC's for different conditions.

  13. #73
    Fuel Injected! one92rs's Avatar
    Join Date
    Apr 2011
    Posts
    173
    what thermostat are you running. my bypass valve is always activated unless you tun on the heater. your suburban may not have this hose going to the radiator. it was more likely a room issue in my gracious engine compartment,lol.

  14. #74
    Vintage Methane Ejector
    Join Date
    Apr 2011
    Posts
    194
    PJG1173,
    I got my truck to run on your bin, and I couln't find anything wrong with Fan A. Try hooking a light or something else up to pin E3.

  15. #75
    Fuel Injected! PJG1173's Avatar
    Join Date
    Nov 2011
    Location
    Jacksonville NC
    Age
    43
    Posts
    629
    I'll try again this afternoon. I'm connecting the positive lead from my volt meter to the cigarete outlet is there somewhere else I should be connecting?
    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,

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •