2004 Hyundai Santa Fe's heater won't blow

sound like you have lost presure switch that is supposed to relive presure when presure is high or the belt is too tight putting presure on the bearing causing over heat or oil cooler restricted and not coolling the oil

Check the radiator fluid level, if it is low, you won't get hot water into the heater rad.

most likely the passenger side under the dash

not all cars have a block heater put if it does it could go into a hose or a freeze plug and some just bolt to the side of the block follow the cord

I suggest you get one
of those manuals people get nowadays to do it yourself.. My nephew use it to repair my car and it's totally repaired now. Here's the website he bought it from.

How about when the heat is on? You might have 2 reostats, one for heater one for A/C.The reostat controls blower speed Most cars only have one ,but who knows seen stranger thjngs,I have had bad blower motors only work on high.My guess would be a reostat.

check all your fuses first , then check the blowermotor for power and ground,if it has power but no ground then replace the blowermotor resistor. hope this helps.

check the fuses and relay for the heater blower motor

hi ok so you replaced the fuse i would that you also check the electricl connection to the fan motor and switch

2 bolts in each of the seats' floor rails... total of 8. Wire harness connectors may not be the same power seat control harness, seat heaters, etc. Research of connectors shows floor harness connectors are identical between 04 & 05. However, optional features like seat warmers in the wire harness of the 05 model may not exist in the other and vise versa.