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Upper Radiator Hose Pressurizing...

Discussion in 'General Tech and Maintenance' started by RFHOMI2U, Sep 28, 2003.

  1. RFHOMI2U

    RFHOMI2U Senior Member

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    88 CRX Si -

    The upper radiator hose is pressurizing A LOT and is getting really hot. Yet, my lower radiator hose is staying VERY cold even after driving for a long time and is not over pressurizing. Every now and then after driving for like 15 minutes, I have to pull over and release pressure from the radiator cap to get it back to operating temp. Not the headgasket, that was just replaced 3 days ago. This problem just started last night. Any suggesions? thanks...
     
  2. BlackFrog

    BlackFrog Neighborhood Lush

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    sounds like there might be air in the system...possibly was not bled properly after the head gasket install.

    Keep in mind, your lower hose should be cooler then your upper. Upper is hot coolant from the block going into the radiator. Lower is cool coolant leaving radiator heading into block.

    Also, could explain this pressurization your talking about? the system is supposed to be pressurized.

    -Chris
     
  3. arpee79

    arpee79 Senior Member

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    Really the lower hose is going into the block..I always thought the other way around hmmm.. <_<


    Anyway have you checked to see if you fan is coming on leave it on for about 15min the keep an eye on the fan to see if it comes on.If not check the fuses inside the car for the radiator FAN that why it might be heating up.
     
  4. kingwilly

    kingwilly Senior Member

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    i got the same problem..so if anyone finds out why its happening let me know..maybe ill pay you..hehe..seriously i need to find out..
     
  5. CRX-YEM

    CRX-YEM Super Moderator Moderator VIP

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    remember from those classes in high school called physics
    heat rises

    but it's possible your thermostat is fuxored, or you have a blockage in your radiator.
    possibly time for a good flush and fill.
     
  6. arpee79

    arpee79 Senior Member

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    Nah i must have missed that class i thought the water pump push it all one way and dint give a rats ass about the water heating then rising and therefore i :blink: .....uhh
    yeah whatever :unsure:
     
  7. CRX-YEM

    CRX-YEM Super Moderator Moderator VIP

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    true the water pump is there to help, but it's more efficient to not work against physics
     
  8. kingwilly

    kingwilly Senior Member

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    i know its not my radiator cuz i got a new fluidyne rad..i guess ill see if it starts to overheat then ill be back with questions..hehe
     
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