Chevy Silverado
Lincoln Mark VIII
Ford Explorer XLT
Grand Prix LE

What is the problem if the heat doesn't work in the 1997 MARK VIII?

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Answer

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Wiki User
07/04/2009

Sounds like the dreaded BLEND DOOR broken, a real pain to do yourself, like part of the dash has to be taken out and the part is only a few bucks but pretty expensive if taken to a repair shop and then you have to hope they know what they are doing and put the stuff back where it belongs without screwing up something else. Hope this helps but not a easy fix. does the blower fan blow? does it blow but blow cold, do any fan speeds work?