Hello I have a 99' model XL w/ Dual Control Climate controls.

Just this week my heat went out on the vechile. Everything seems fine, theromstat normal and not dipping down, anti-freeze seems to be ok just freezing cold when utilizing the controls. Weather I utilize the front or the rear controls same issue only cold air.

I believe the issue is with the Heater Core but would like some opinions on that matter as I see I can purchase the main core or the core for the front and rear compartments separtely.

I've got no indication lights coming on for my Check Engine lights and sensors which I thought would come on for some occurance.

Any suggestions, appreciate thanks.

Check at cartrackers.com under The Windstar Report forum. This has been a very hot topic there recently. I don't think the issues have been with the heater core but problems with the blend door actuators and other electronic controls. Do a search on that forum and you find tons of posts on the subject.