Q&A

 Master

The heater controls on the dash are vacuum controlled make sure the vacuum hose is attached at the reservoir chamber and has vacuum from the engine and to the heater controls. Check the coolant level or there is a possibility the heater core is plugged up. Does the temp gauge read around the middle (if not the thermostat may be stuck open).

Hyundai as a car manufacturer put a lot of free technical information and workshop manuals on line for Hyundai owners. Check out www.hmaservice.com lots of great information, not sure how far back there information goes back. There is a company that independent auto repair shops get their information from, this same information is available inexpensively for people that work on their own cars.. The information is year make and model specific, covering repair procedures, torque specifications, fluid capacities and specifications, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate http://bit.ly/AllData_Repair_Manuals_Online