Question about 1998 Jeep Grand Cherokee

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Blower motor will not come on (has climate control) checked fuse what about relay or resistor and where is it located?

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Hi I have a 98 Jeep Grand Cherokee Laredo.just turned over 200k miles too. the ac/heater blower just stopped working. I have replaced the resister, but no change. any other ideas? where would the relay be? and could this be the porblem? i need help!!

Posted on Feb 21, 2011

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Check for voltage at the motor , you have the correct voltage there the motor is probably bad.

Posted on Jan 15, 2009

  • burky_261 Apr 16, 2011

    I have the same problem, replaced control valve, blower motor resister and blower motor. Blower still won't come on, power to control unit, blower motor. Help!!!!!

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SOURCE: 1997 Oldsmobile eighty-eight blower fan not working

blower motor resistor

Posted on Jun 07, 2010

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92 Buick Park Ave with blower control module problems where is it located?


1993 Blower Resistor Module

Print


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Fig. Fig. 1 Blower resistor assembly is underneath the fuse block


REMOVAL & INSTALLATION

  1. Disconnect the negative battery cable.
  2. Remove the rear sight shield.
  3. Remove the fuse/relay block assembly and bracket.
  4. Disconnect the resistor module connector.
  5. Remove the retaining screws and remove the resistor module.

To install:
  1. Inspect the gasket and replace or repair as required.
  2. Install the resistor module and secure with screws.
  3. Connect the resistor module connector.
  4. Install the bracket and fuse/relay block assembly. Install the sight shield.
  5. Connect the negative battery cable, and check the climate control system for proper operation

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1 Answer

Why wont my a/c or heater fan come on?


When the blower works only on the high setting its usually a bad blower resistor which is right near the blower motor. now you say it would always blow high regardless of the fan speed setting that would indicate probably the climate control unit or a connector problem somewhere. finally it not working at all may be the climate control unit or connection went bad even further. it might have a blown fuse or a bad blower motor in addition to the climate control unit or connector problem .check for power and ground at the blower motor. the power is supplied from fuses and may have a relay also. the ground is supplied from the climate control unit and goes through the resistor to control the fan speed. good luck

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There are 2 relays for the blower. The low blower relay and the high blower relay. They are both located
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The low will have 4 wires from it, one lt. blue and 3 brown. The high will have 5 wires 1 purple(to blower mtr.) 1 black 1 dk blue 1 red and 1 orange.
Also, the blower resistor is in the same area if needed. Hope this helps.

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