1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

cooling fan trouble

Discussion in 'Civic and CRX - EF' started by Baserloks, Nov 19, 2008.

  1. Baserloks

    Baserloks New Member

    Messages:
    72
    Likes Received:
    0
    Joined:
    Nov 19, 2008
    need some help with my cooling fan...my original cooling fan froze on me and fried up the fan and fan wiring all the way through the harness back to the firewall...it also caused a short to the 15 amp cooling fan fuse under the dash and the 30 amp passive fuse on the positive terminal and the wires on the back of the temperature sensor behind the block keep frying up after i change them out...i got a new cooling fan and hardwired it to come on manually but would like to fix it to come back on normal...when i place a new cooling fan fuse under the dash and put a new fuse on the passive terminal and connect the fan it's just normal warming up...as soon as the temperature switch sensor turns on to signal my cooling fan to turn on it automatically burns the two wires on the temperature switch sensor behind the block and burns out the same two fuses...i need to know where to bypass the fan wires through the harness and where they both go to so that it could turn back on automatically...the original fan wiring is shorted out completely...the car is a 91 civic lx (5 speed)...!!!
     
  2. jlicrx

    jlicrx Senior Member

    Messages:
    1,891
    Likes Received:
    65
    Joined:
    Jun 5, 2003
    Location:
    Colorado Springs
    the cooling fan switch on the back of the block is a switch in the ground cicuit for the fan and should have no power to it - when the switch is open, your fan does not have a ground, so it doesn't come on - when the switch closes, it completes the ground and the fan comes on - somehow, you have a 'hot' power wire connected to the ground circuit - when the switch closes, you end up grounding the power line creating a dead short which blows the fuses and burns up the wires - you didn't say whether the car had A/C with an additional cooling fan? - here are the cooling fan wiring diagrams for US and CAN models:

    [​IMG]
    [​IMG]

    here is the location of the fan relays:

    [​IMG]
     
  3. Baserloks

    Baserloks New Member

    Messages:
    72
    Likes Received:
    0
    Joined:
    Nov 19, 2008
    it has a/c with a additional fan motor but i removed it too...only have the new cooling fan connected...i put a new cooling fan motor but want to run both wires directly to the source of the old wires that shorted through the harness...thats a nice diagram but i dont want to screw up...can you tell me where to run each wire from the fan motor directly and show a pic of where both of them should end...thanks...!!!
     
  4. D16SiHatch

    D16SiHatch New Member

    Messages:
    1,297
    Likes Received:
    44
    Joined:
    Sep 7, 2007
    this might prove more helpful

    [​IMG]
     
  5. accord921153

    accord921153 New Member

    Messages:
    20
    Likes Received:
    0
    Joined:
    Nov 28, 2008
    hey i need help to i just replaced the rad cap thermo upper hose and bypass inlet hose on my 92 accord ex and my hoses feel like they are goin to burst im not sure if my fans are even kickin on how can i test that ???
     
  6. D16SiHatch

    D16SiHatch New Member

    Messages:
    1,297
    Likes Received:
    44
    Joined:
    Sep 7, 2007
    first i'd go to the correct subforum, and then second, make my own thread ;)
     
Verification:
Draft saved Draft deleted

Share This Page