First check fuse under dash. Then check voltage to blower motor. Then replace resistor under glove compartment. Then move to switch behind dash panel. Then blower relay if no voltage.
blend door failure is a common problem on 97+ Jeep Cherokee
One of the reasons a 2000 Jeep Cherokee heater would randomly blow cold air and then hot air and then cold might be that there is a problem with the hot/cold duct. The air or a vent might be inadvertently blowing periodically.
The HeaterTreater is an after market kit that solves heater and AC for the Jeep Grand Cherokee and Laredo. It is much cheaper than the dealership fix and is easy to install. For diagnosis and info, check out www.heatertreater.net or search eBay for "heatertreater".
The HeaterTreater is an after market kit that solves heater and AC for the Jeep Grand Cherokee and Laredo. It is much cheaper than the dealership fix and is easy to install. For diagnosis and info, check out www.heatertreater.net or search eBay for "heatertreater".
Vent bypasses heater core when open,it is for outside air only...I know this because I just replaced heater core.
Most likely the blend door. Check your year model at heatertreater.net for diagnostic information and a cheap fix.
Most likely a broken blend door. Check heatertreater.net for diagnostic information and an inexpensive fix.
Heater core may be defective
Can a 2004 Power Tech High Out Put Engine Fit in a 2001 jeep grand cherokee limited 4.7L v8
Bad thermostat
possibly blown head gasket
check pcv it maybe plugged