Hello

Just reacently got a 90 new yorker 5th ave. Pretty with only 47,xxx miles.
everything looked good and worked so bought it,(for my girlfriend) as she liked it. Either way about a week later, started it up in morning and let run for usual 15-20min as its cold here in WI right now. Was gonna give her a ride to work so can come change oil and check everything over started going and turned heat on and there was nothing and was blowing cold air, so first i changed the thermostat, that didnt solve anything. The radiator wasnt the best looking, and water pump was kinda noisey but not leaking or anything, so decided to just get new radiator and water pump, changed both of those and still no heat, both in and out tubes on the radiator and heater core both get hot and can feel fluid running thru them. It has digital everything on top of it. So what could be the problem??

Any input would be greatly appreciated, as its aproaching coldest part of year.

Great timing huh. lol