Question about 2002 Jeep Grand Cherokee
Heat works fan not blowing
Check heater/ac fuses first replace if bad..see if there is power to the blower motor connector if so reconnect and check ground wire for the motor.. if still no blow, take motor out and test for operation with 12 volt power supply(battery charger) replace if bad..good luck
Posted on Jan 17, 2013
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Posted on Jan 02, 2017
I had the same problem. Mine was the wire harness that connects to the blow bow. My wires were getting to hot and melting the harness. Try to wiggle the wires that connect to the blow bax while the heat is on high.
Posted on Jan 19, 2009
No, the problem is the blend door, reaserch blend door failures, tons of info on the web. A quick fix it now solution is this:
remove the glove box by opening it, and if you pop it pretty hard with your hand it will clear the stops - I have done it on several jeeps and never broken anything, remove the little slow open piston on the right. On the bottom there are three tabs that act as a hinge, two up one down, you can wiggle it out without breaking it. then, on your left you will see an actuator, remove it. Now in the area to the right of that the shape of the duct kind of curves around to an edge - vertical. Take a drill with a small bit and drill a hole and push hp am the drill as if you were using it as a rotozip, about 4 inches or so then to the left about 4 inches and them back down to where the seam is. there is a metal clip in the cut section connecting the top and bottom, pop it off and remove the piece of duct. Now, reinstall the actuator and turn on the heater, and go from hot to cold. you will see a door go up and down. now rach further back and you will find a second door that is in the down position. flip it up and stick something in to hold it up - I used the plastic holder frm a mach 5 razor, as was 8 degrees out side the first time I just fliiped it up thinking it would stay. Now reinstall the piece of duct, it will pretty much stay in place and use a bit of duct tape to seal. Ther is a produce on ebay i believe called heater treater that has a more permanent fix and i believe a few photos, as you will use the same access door you just made to install it. Make sure and use a vac to clean all of the little black shavings, best to have some one hold the vac while you cut. Do not use a jig saw, it will destroy the duct work. and dont forget to reinstall the plunger on the glove box when you put it back, and yes, just smack it it pop it back in place
Posted on Dec 11, 2009
OK. So the blower notor isn't operating. Do you have power to the blower motor? The resistor is new from what I got. If you don't have power to the blower motor, then check the speed control switch and fuses. If you have power at the blower motor, replace the blower motor
Posted on Jun 16, 2010
The blower moter switch or the blower moter controler can cause this
problem. Remove the plug from the switch, use a 12v test light to locate
the 12v power wire in the plug. Next with a small jumper wire bring power from the 12v contact to the low and medium speed contacts on
the plug if the blower changes speed replace the switch if it still only
has high replace the controler. The blower controler is located on the
passenger side end of the heat-a/c box near the blower moter.
By the way the key must be in the on position for this test.
I hope this helps. Good luck.
Posted on Jul 10, 2010
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