97 Kia SPORTAGE : No heat, blower works, AC works, flushed radiator and heater core with liquid and air both directions, new thermostat, new radiator cap, coolant changed. carpet slightly damp, but no coolant odor. Could be from recent heavy rain. Car has never overheated, always relatively cool. Flushing the core, I blew compressed air and liquids directly through the both hoses both directions, had air and liquid in both directions. After all this I still have no heat. What am I missing here?
SOURCE: 2001 Kia Optima over heating
I figured this out and fixed it on my 2001 Optima. Mine was an electrical problem, not an overheating problem. The problem shows up when there is a heavier than normal load on the electrical system. For most of us, this is when the air conditioner is running full-blast on a hot summer day. However, it was also occuring when I ran the heater full blast. The heater running full-blast should have lowered the temperature, not raise it. So I tested the coolant temp while the gauge was showing it overheating. The coolant temp was not increasing, but the gauge showed that it was. It is caused by a bad ground connection. Another test you can do to see if your problem is the same as mine is this. As soon as the engine is showing overheating, pull over, park the car and turn off the engine. Immediately start the engine again and see what the temp gauge shows. If it still shows hot, you'll know you've really got overheating coolant. If it goes back to normal range, you'll know it's just a bad ground connection. Turning off the engine eliminates the resistance in the electrical system that has beeen building up and causing an erroneous high temp reading.
To fix: Either find and clean ground connections throughout the vehicle until it fixes it, or do what I did. A mechanic at the Kia dealer showed me this. I ran a new wire from an empty bolt-hole on the top of the engine to a bolt into the frame behind the engine. I only added a 6 inch wire and a new bolt into the top of the engine. The bolt into the frame was already there, so I just removed it, put the wire under it, and replaced the bolt. It created a redundant ground that prevented the build-up of resistance that caused the erroneous temp reading. It was a 5 minute fix and it has never done it again. Kia knows about this problem and they put out a post to their shops on how to fix it.
SOURCE: 2000 kia sportage no heat
You might also consider using the heater core as well as the modified evaporator. It probably would'nt be hard to tee off to both cores with the water lines. "Just a suggestion"
Good luck.
SOURCE: '99 Kia Sephia overheats and coolant boils out...
rplace coolant temp sensor,and bleed all air out of coolant system ,fan relay checks and fuses check is good,,do fans run with ac on? if they do ,fuse and relay most likely ok but check relays any way
16.
Remove two nuts attaching the bottom of the blower housing unit to the bulkhead mounting studs.
17.
Remove the blower unit from the vehicle.
18.
Remove the temperature control cable from the heater unit servo.
19.
Remove the two nuts from the mounting studs at the bottom of the heater unit.
20.
Remove the top nut holding the heater unit to the bulkhead to the bulkhead mounting stud.
21.
Remove the heater unit.
Regards,
Jeep Brainy
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