2004 crown vic my blower would intermittently stop now won't run. What relay or breaker should I look at?
Sounds like the blow motor resistor, which is the most common problem.
Could be the fan blower switch, relay or resistor also burnt fan motor wire terminals. Relay in in fuse box
These cars do not have a blower motor resistor. Blower speed is controlled by the BMSC (blower motor speed control). This module is located to the rear of the driver's side cam cover on the firewall. Give it a sharp whack with a screwdriver handle while a helper turns on the blower and listens for it. If it tries to come to life you have found the problem. This is a common issue with these cars. It looks like one at the link. Make sure you buy one that is made by Ford or you will be replacing it again soon..https://www.amazon.com/Ford-8W7Z-19E624-Blower- Motor-Control/dp/B0041X79YM.
Bob You are awesome! That was it, now all I have to do is get all the other stuff out of the way so I can change it. Believe it or not the previous owner left an old one in the glove box, don't know what that means, I'll get a new one. Thanks Gordon
Like I said before buy one that is made by Ford and not one from the aftermarket auto parts stores. It will last much longer. A good resource is your local Ford dealer or save some money and get on online at www.tascaparts.com or similar vendor. I have a similar vehicle so this was not a difficult question for me. Best of luck with it.
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