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  • #16
    could be the heater core it may not be working right

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    • #17
      sounds like the thermostat is stuck open.
      07 f250-family truckster
      08 Denali -baby hauler
      52 f1-rust bucket
      05 Jeep tj. Buggy
      livin the double-wide dream

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      • #18
        Originally posted by babygirl21 View Post
        could be the heater core it may not be working right
        Seriously?

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        • #19
          These responses are hilarious!

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          • #20
            It's gotta be the blend door.



            - Darrell

            1993 LX - Reef Blue R331ci
            1993 Cobra #199 - SOLD

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            • #21
              Sorry for the slow response back to you guys. Air flow is strong through the vents. Heat is barely warm. Not enough to defrost ice on the windshield or anything. It's my sisters truck and she has it the next few days for work. Saturday, I will check the fluid levels and let it run for a hour to see if the temp changes. And make sure the knob isn't stripped.

              I swore I subscribed to this when posting and didn't get no emails with responses.

              If I do end up flushing out the heater core. Is normal water pressure from the hose enough not to blow the core up?

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              • #22
                The way my sister sounds the heater has never worked right. They have had it for 3-4 years.

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                • #23
                  Originally posted by GT Fanatic View Post
                  If I do end up flushing out the heater core. Is normal water pressure from the hose enough not to blow the core up?
                  No you wont damage the core with normal water pressure. Just watch the flow out the other side when you do it. Normally you will hear a pop and/or see some rusty looking water come out the other side when you clear the blockage.

                  If you have great flow out the other side right off the bat then a blockage isnt your problem.

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                  • #24
                    Originally posted by Lason View Post
                    No you wont damage the core with normal water pressure. Just watch the flow out the other side when you do it. Normally you will hear a pop and/or see some rusty looking water come out the other side when you clear the blockage.

                    If you have great flow out the other side right off the bat then a blockage isnt your problem.
                    Like I said above. Just see if both hoses are hot coming out of firewall before you tear it apart.

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                    • #25
                      Originally posted by GT Fanatic View Post
                      If I do end up flushing out the heater core. Is normal water pressure from the hose enough not to blow the core up?
                      You wont blow it up even with a high pressure end. lol. Like my post said. First thing to do is check the level. second turn the temp controller from cold to hot and see if temp changes then back to cold and see if it changes while engine is hot. If nothing then open the hood and see if one hose is cold and other is hot.

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                      • #26
                        I let it run for an hour. Hoses are barely warm. Even both heater core hoses are barely warm. The water level on the reservoir is full. Thermostat?

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                        • #27
                          IMO it sounds like the heater core is partially plugged.

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                          • #28
                            I meant all radiator hoses are barely warm. Not just the heater core hoses. Just clarifying my statement from earlier. Thanks

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                            • #29
                              Update. Thermostat replaced and it's blowing hot air now. Thanks everyone for the help and info.

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                              • #30
                                Originally posted by gt fanatic View Post
                                update. Thermostat replaced and it's blowing hot air now. Thanks everyone for the help and info.
                                wow

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