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heater problem on 98 millenia s

Heater not working only blows cold air, blew warm air for about 10min then cold after that and never worked again. Need help, any advice?

RE: heater problem on 98 millenia s

your heater core is out
pain in the butt to change. you have to take dash out. mine is broken also

RE: heater problem on 98 millenia s

I have a 2000 millenia and I had the same problem. I downloaded the repair manual for a 96 millenia, which is not exactly like the 2000 but here the site "http://rapidshare.com/files/51248650/Millenia-1996.rar". We took the radio out to see what we could find and at the same time my friend was reading over some things I had printed off. Come to find out it was the c/c computer needed to be reset. In order to do that you can find that on Pages U22-U26 of the manual. It was either that or it might have been where we took the negitive cable off the battery for about 2 minutes either way I have heat now without taking the dash out. If you can't download the manual let me know and I look at it again and explain it to you. Good Luck!