Smelled a burning smell while AC was running full blast while car was in park for couple mins idling. Now ac only blows warm/hot air that's it. Also engine has whooping sound constantly (you'd really have to hear it to know what I mean) but didn't know if that was related.
Check for slipping ac drive belt ( smell and noise )
SOURCE: need instructions on removing hyundai santa fe 01 fan belt ac
its your serpentine belt (thats what its called) and you will need a 3/8 ratchet and then find the belt tensioner. The tensioner has a spot where you need to put the ratchet into and pull or push depending on whatever way and that will releive the pressure off the belt so you can take it off.
SOURCE: AC not blowing cold air
Most likely the A/C system needs to be recharged with freon.
Most shops charge under $50 for this service.
SOURCE: how to replace the hyundai santa fe air
Hyundai said the dash needs to come out to replace the evaporator but I have been told by 2 others it can be done by removing the glove box and getting to it from there, and mine was done this way.
Do you have cruise control,see if that cable somehow is giving slack,This is a problem with Hyundai where the cable affects TPS plausibility,There was a TSB bulletin by Hyundai Engine RPM fluctuation - cruise control cable adjustment procedure
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