dudeimdano

I just replaced the blower motor an hour ago still no heat. I get heat on defrost when im moving faster that 45 so I know its not the heater core... possible switch or resistor any ideas and how to tell what it is would be helpful thanks.

dudeimdano

this is also a 95 xj if that makes a difference

caged

don't rule out the heater core just yet...

do a simple back flush, see how that goes.

cruiser54

This system must work correctly:

I would eliminate the heater control valve as it could be clogged/partially closed/and is not needed anyway.

Kingfisher

Evidently the blower isn't working for whatever reason. Fuse, Switch, Bad ground

RSWiser

The control of the vents is managed by the vacuum system.
Check you vacuum lines to make sure you don't have any leaks.
That was my problem.

RSWiser

dudeimdano

the connector for the switch is melted probably the cause so just to get my through the winter I ran the blower motor to a toggle switch and to the battery when I get time ill get a new harness thanks for the info people.