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heating issue

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    #1

    heating issue

    when i turn on my heat it takes a long time for it to heat up? what can cause that?
    Tags: None
    #2
    Is it when you first start your car in the morning, or after it's been running for a while?

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      #3
      youre heater core or thermostat could be clogged. Check the hoses going into it

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        #4
        The thermostat has nothing to do with the heater core, the heater core always has flow from the engine whether the thermostat is open or closed, so the likely deduction is that your heater core is clogged.
        PT3/6 Development Thread | My 1991 LX Coupe | DIY: 90-93 Tcu Fix

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          #5
          wrong

          if the therm is stuck open then it won't heat up in cool weather
          ____

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            #6
            As above 2 posts, more than likely the thermostat, Does the gauge also take along time to rise?

            Remember that the air temp will only ever be as warm as the coolant temp.
            I.e turning on the heat first thing will make the engine take longer to warm up.


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              #7
              Originally posted by bcjammerx View Post
              wrong

              if the therm is stuck open then it won't heat up in cool weather
              I had a thermostat that was stuck open for who knows how long, and I always had heat, even in 25*F weather, it would still blow nice and hot. Either the knob is broken, the wire connected to the heater core isn't connected, loose, or has too much slack, or the heater core is clogged/bad. A thermostat stuck open won't affect the heat output except in below freezing weathers from my experience.

              A couple tests to check the thermostat anyways:

              After the car has completely cooled down (say from sitting overnight), remove the radiator cap, if you feel vacuum then your thermostat is closed, and thats normal.

              Turn on the car, and wait... feeling the upper and lower radiator hoses. The upper should get nice and toasty, and the lower should stay cold until the thermostat opens up, if your fan kicks on twice and the lower radiator hose is still cold, then your thermostat is stuck closed. If after you turn on the car, both hoses seem to be the same temp all the time, then your thermostat is stuck open. Good Luck, hope this helps!
              PT3/6 Development Thread | My 1991 LX Coupe | DIY: 90-93 Tcu Fix

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                #8
                when my heater core messed up my floor board filled up with water it stayed damp passanger side floor board
                who dat do dat

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                  #9
                  mine was stuck open in 40* weather and I never got heat...guess my radiator is ubber kick ass had to put a piece of cardboard in front blocking it totally to get any
                  ____

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                    #10
                    its after the car has been running for a while it gets a little warm but thats all...just want to know if its the thermostat or if it could be something else

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