My sportage i bought never blew hardly any heat so i ordered a new after market core for it. pulled heater box and come to find out i have odd ball heater box that takes a 6in.by 6in. by about 3/4in core u can only get from kia that their mechanic told me was pretty worthless here in northern minnesota. so i tig welded ends on the a/c core to hook up water lines and use it as a heater core its a ft.by a ft. by 2in. figuring it would have better heat. no luck its worse. only throws heat going up hill or down the freeway,when the motor is working hard.the feed hose seems hot but the return is much cooler.my question is, it does'nt seem to be curulating the water. is there check valves or something on these vech.? the feed comes out of the thermostat housing and the return is to a housing on the water p/u side instead of feed on intake manifold and return to the radiator like in the old days
It may be that the thermostat is not the proper one needed to regulate heater temperature operation. Check the thermostat. It may be rated lower than necessary to allow for heating purposes. And if you dare, you might try (for winter purposes only) installing a thermostat of a higher rating so the coolant will need to run about 20 degrees hotter before opening and thus making the heater core a bit hotter to facilitate better heating, if you can locate a thermostat of the same size that is which will fit a Sportage housing. It seems to be determined that the core is not plugged or else this would have been my first bit of advice for you to address. If youre determined to continue with your own retrofit core make sure the housing you install it is sealed to allow your fan or blower to pump this heated air into the vehicle and not outside into the engine compartment. I hope this might prove useful to your endeavor, good luck.
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Follow the hoses to the heater core/firewall. When up to temp, both lines should hot, about the same temp. To hot to keep your hand on for to long. If one is a lot cooler, it's the heater core. After that I would check the controller or the blend door actuator.
Did you bleed your system of air???....usually a bleed screw near the thermostat housing...get allllll the air out...simetimes the heater core is at the highest oart if the system..therefore if there is air in system..thats where the air settles and no coolant will flow through the heater cire!!
9 out of 10 times its the heater fan resistor doing this. it has wires that corresponed to diffreent speed settings for heater fan. the resistor is beside the blower motor, Your Kia Sportage Blower Motor Resistor controls the heating equipment in the
vehicle by opening and closing the fan motor. The Kia Sportage Blower Motor
Resistor allows the heating and climate control system to control the speed of
the vehicle's cooling fan. its under the passenger side glove box. undo 2 screws and disconnect the electrical connector. thats it!!
You most likely have air in the cooling system.You would need to bleed the cooling system of air.There should have bleed screws near water neck,or thermostat.Do this cold.Remove the radiator cap and fill full.Then start the engine and loosen the screws and watch for nothing but coolant to flow out(no air or bubbles).When you are sure the air is gone out of the cooling system,shut the bleeder screw off,and fill radiator up and test to see that engine runs cool,and you have heat at all speeds and rpm s.The electric cooling fan should come on at a tempuratue of about 215 or so.But just as important,the cooling fan should cut off at a lower tempurature.If the cooling fan does not do this,you still have air in the system.If you can not get the air out this way,then do this.Remove the radiator cap and reservoir cap and fill them both up full.The reservoir needs to be over the fill mark a good deal.Replace the caps.Start the engine with ac and heat off.Let it run until the engine gets to about 212 or 215 degrees and shut the engine off.Wait about 30 minutes and check the reservoir to see if the coolant has dropped.It should have dropped.If the reservoir has dropped or not ,do this again and again untill the reservoir drops in coolant level,and engine temp is good(fan goes on and goes off).Remember to refill the reservoir as needed as it drops,not to run out of coolant.
hi if it was running before your heater matrix leaked and now it won,t check all the wiring connections in the area of the hoses you will proberly find water has got in and is shorting the wiring if water has got on to any of the electrical system clean and dry them and spray them with a damp repleant WD40 or similar yates210456