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Nov 14, 2012 - Uploaded by Freedomautomotive1
1998 ATC Jeep Grand Cherokee Blower Resistor connector Repair Kit (RARE 1/2 Year) ... How to Fix a Chrysler Blower FanThat Only Works on High - Duration: 16:51. ... JEEP2001 FIXING THE HEATER BLOWER CONTROL. ... Jeep Grand CherokeeCenter and Lower Dash Removal - Auto Repair Series ...
First I sugges to checl fuses and electricla connections; if they are ok, then test blower relay and blower motor (generally located under dash, passenger side).
Disconnect the negative battery cable, heater blower resistor
wires and blower wires. Disconnect the heater core ground strap at the
dash panel.
Drain the cooling system and then disconnect both heater hoses at
the heater.
Remove the seven screws attaching the heater/blower case to the
plenum and remove the heater/blower base.
Remove the four screws from the heater core shroud, and then
remove the shroud and core assembly.
Separate the core from the shroud by removing the three screws and
core mounting clamps and then separating the two.
To install:
Using sealer as necessary to prevent leaks at all joints and
flanges.
Position the assembly onto the dash and tighten the retaining
screws.
Reconnect the heater hoses, electrical connectors and negative
battery cable. Refill the engine with coolant, start the vehicle and
check for coolant leaks.
And this procedure for all Buick models with A/C... 1977 AND LATER
Disconnect the negative battery cable and drain the cooling
system.
Disconnect the heater hoses.
Remove the retaining bracket and the ground strap. Disconnect the
module rubber seal and module screen.
Remove the right windshield wiper arm.
Remove the diaphragm connections, the hi/blower relay, the thermal
switch mounting screws, and all the electrical connections from the
module top.
Remove the module top cover and remove the core.
To install:
Apply a strip of caulk-type sealer when installing the module top.
Install the core and module top cover.
Install the diaphragm connections, the hi/blower relay, the
thermal switch mounting screws, and all the electrical connections to
the module top.
Install the right windshield wiper arm.
Install the retaining bracket and the ground strap. Connect the
module rubber seal and module screen.
Connect the heater hoses.
Connect the negative battery cable and refill the cooling system.
Start the engine and check for coolant and vacuum leaks.
Your heater core is in your dash, and yes, its a pain to get to. My dad and I did my grandma's in the same minivan, and we ended up taking out the front seat just to give us extra work room. Usually if your heater core is bad, you will have a big wetspot in the passenger side floor board. The only thing that really can go wrong with a heater core is it leaks, thus the wet spot.
ok the is a sensor that leads to the fan this should be the problem to your fan not working. lol i remember one guy used a light switch wired to the fan sticking out of his dash. the problem is an easy fix :)
Its not the switch or the controller in the instrument cluster. On my jeep there was a panel on the passenger side under the dash board. It helped me find it by turning on the heater and going toward the sound of the blower. On the backside of the panel was a series of little coils that control the different speeds. one of those coils had been broken.
There are two possible problems with it. The first is the switch, and the second is the heater motor itsself. Since the switch is easier and cheaper, I would start there. You'll have to pull off the trim ring on the dash...chevrolet likes to put a border like thing around the dash components that just snaps in in order to hide the gaps and screws. Once this is out, you will be able to access the screws for the panel that contains the switch. Then it'll be a matter of simply removing the switch, and replacing it. If that doesn't fix it, then you will have to replace the fan motor. It's possible that the brushes inside are worn out from use by now, due to age of the vehicle, causing intermittent operation. Good luck, and hope you get it fixed quickly.
check the switch to be sure there is power goin to it and out of it. there is a high speed fan relay that usually controls all speeds. it will be under dash on right side probably on ac/heater box when u find it inspect wiring and connector
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