here goes. i purchesed this 97 back in june, the prob started 3 weeks ago when it got cold enough to tun the heat.. theres plenty of air flow,[out of all vents depending on whats selected]. the prob. is its just not HOT,,just warm sorta like out of a home heatpump sys. it will keep you from freezing to death but thats about it. the stat is a 195 there is flow through the heater hoses, they are the same temp as the rad.hoses. i took the control panel off & checked the movement of the heat control flap.. is got full stroke open to close..I talked with a guy at work he said his 98 was the same.is this normal?? if so then going with a cherokee over all my past cj's for a warm winter ride was not a good decision..i had a 93 last winter & it would run you out of it,nice hot air from defrost, heat, or dash ... ..any help with this or any remedies the long time people have done would be greatly appreciated...its a 97. 4.0 w/ac & 5 speed & i changed the stat sun. 195 with no change