Question about 1997 Jeep Grand Cherokee

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Blower motor does not work

Blower motor for heater and a/c does not work. I removed it and checked with battery outside vehicle-OK. Replaced blower motor relay in fuse box passenger side-OK. Replaced blower motor resistor-OK. Checked relay for fansetting switch-clicked-OK. What else is there?

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  • Anonymous Mar 29, 2014

    heater motor do not work what fuse is for motor

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I had the same problem, replace, replace, replace. Check, check and recheck. What I found was the blower motor resistor, located in the blower squirrel cage area, two prongs and a curly wire, was bad. Took the new one back, (it ohmed out okay, continuity ok, all ok!) replaced it with another, and Bingo, problem solved. Frustrating to say the least. After two relays and a blower switch, and test, test and retest. It was a faulty resistor. Made in Mexico. And no guarentee, even though new, it works. Trial and error. Even the dealer parts are Honcho en Mexico. Thanks NAFTA. You gonna make us all welfare babies.

Posted on Sep 28, 2009

  • Bob Wagner Nov 11, 2012

    Sorry it took so long to get back I have tried everything,no power at switch,no power at resistor,no power at motor ground checks good checked motor with small battery it worked, checked all fuses and relays all good ready to give up.

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My turns signals and Heater blower just went out completely - Cabin fuses look OK - Suspect fusible link in engine compartment fuse box


Its faulty blower motor resistor. The low and medium speed on blower motor is controlled by resistor and its actual speed is high. So because resistor is not working, blower motors actual speed which is high is working.


It can be faulty blower motor or faulty blower motor resistor. Get the blower motor inspected. If it's faulty it has to be replaced.


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For blower motor testing and replacing, check the link below: ----

Blower motor Testing/replacing for all vehicles?

http://repairhelpcenter.blogspot.in/2012/02/blower-motor-replacing-for-all-vehicles.html

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The dash panel lower side has to be out.

HEATER BLOWER MOTOR


Its faulty blower motor resistor. The low and medium speed on blower motor is controlled by resistor and its actual speed is high. So because resistor is not working, blower motors actual speed which is high is working.


It can be faulty blower motor or faulty blower motor resistor. Get the blower motor inspected. If it's faulty it has to be replaced.


=======

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Heater is not working


HEATER BLOWER MOTOR


Its faulty blower motor resistor. The low and medium speed on blower motor is controlled by resistor and its actual speed is high. So because resistor is not working, blower motors actual speed which is high is working.


It can be faulty blower motor or faulty blower motor resistor. Get the blower motor inspected. If it's faulty it has to be replaced.


=======

For blower motor testing and replacing, check the link below: ----

Blower motor Testing/replacing for all vehicles?

http://repairhelpcenter.blogspot.in/2012/02/blower-motor-replacing-for-all-vehicles.html

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These will help.

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Nov 28, 2012 | 1988 Honda Accord 4 Door

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The motor for the heater is not working


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It can be faulty blower motor or faulty blower motor resistor. Get the blower motor inspected.If its faulty it has to be replaced.


=======

For blower motor testing and replacing,check the link below:----
Blower motor Testing/replacing for all vehicles?

http://repairhelpcenter.blogspot.in/2012/02/blower-motor-replacing-for-all-vehicles.html

------------

These will help.

Thanks.

Nov 26, 2012 | Cars & Trucks

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Heater blower don't work


It can be faulty blower motor or faulty blower motor resistor.Get the blower motor inspected.If its faulty it has to be replaced.

=======
For blower motor testing and replacing,check the link below:----
Blower motor Testing/replacing for all vehicles? http://repairhelpcenter.blogspot.in/2012/02/blower-motor-replacing-for-all-vehicles.html

------------
These will help.
Thanks.

Nov 25, 2012 | Cars & Trucks

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Where is the blower motor? heater in car dosent blow. not under hood, cant get through glover compartment.


This work for 1998 Buick Century 3.1L SFI OHV 6cyl; the blower motor is a variable speed motor. The higher the voltage applied to the motor, the faster the speed. Depending on the HVAC (Heater Ventilation Air Conditioning) option installed in the vehicle, blower speed control could be through a set of resistors or through a solid-state blower motor control module.

In general, this system is reliable. Because so many of the control operations are electronic, special diagnostic equipment really should be used for system diagnostics and check-out. An authorized technician using a scan tool can most quickly locate HVAC problems.

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Fig. Typical behind-the-instrument panel view of HVAC related components. Depending on the HVAC option, not all components are used on all vehicles (click for zoom)

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Fig. Typical HVAC operation schematic

An inoperative blower motor could be caused by the following:

* Blown fuse(s). The fuse should be replaced. There may be both a LOW BLOWER and HIGH BLOWER fuse. Some models may also call it the HVAC fuse. Even the RADIO fuse is used in some applications. Check them all. If a fuse is blown there may be a short to ground in one of the power supply circuits.
* Open Circuit. Check the circuit between the ignition switch and the blower motor, and the blower motor ground circuit. Repair as necessary. * Faulty blower switch. A faulty blower switch should be replaced. * Most heater blower circuits also include a blower motor relay (look in the underdash convenience center), as well as a blow motor resistor. These items should be checked especially if the blower runs in one or two speeds, but not all speeds selected.

REMOVAL & INSTALLATION

  1. Disconnect the negative battery cable.
  2. The blower motor is located on the passenger side of the vehicle, under the instrument panel. Remove the right side sound insulator (trim panel) by removing the retainers and disconnecting the courtesy lamp.
  3. Detach the blower motor electrical connector. Some applications may have cooling hose to the motor which should be disconnected.
zjlimited_80.jpg

Fig. Blower motor and fan assembly removal

  1. Unfasten the blower motor mounting screws, then remove the blower motor from the vehicle.
  2. If the blower motor fan (also called a 'squirrel cage') must be replaced, use the following procedure:
NOTE Do not hammer on the motor to remove or install the fan. Do not apply force to the motor housing to seat the fan on the motor, or motor/shaft bearing damage could result. Do not apply pressure to the fan rim. Be sure the correct replacement part is used.
  1. Remove the metal star clip retaining the fan cage to the motor shaft.
  2. Remove the fan by pulling straight out.
To install:
  1. If removed, install the blower motor fan, as follows:
    1. Install the replacement fan cage onto the motor shaft.
    2. Adjust the fan cage to get a clearance of 0.30 inch (7.5mm) to the motor mount plate.
  2. Install the remaining components in the reverse of the removal procedure. Make sure the electrical connection is secure. Tighten the motor screws to 14 ft. lbs. (20 Nm).
  3. Connect the negative battery cable, then test the blower motor for proper operations


I hope this helps (remember to rate and comment this answer).

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1 Answer

How do you change a heater blower moter in a 1998 Dodge grand caravan


Removal & Installation


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The blower motor is located behind the glovebox, behind the blower motor cover

  1. Disconnect and isolate the negative battery cable, then wait 2 minutes before proceeding with the removal. This will effectively disable the air bag system preventing possible personal injury.
  2. Remove the glove box from the instrument panel.
  3. Remove the A/C-heater blower motor cover.
  4. Disconnect the blower motor wiring connector.
  5. Remove the blower motor wiring grommet and feed the wiring through the blower motor housing.
  6. Remove the blower motor mounting screws.

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Once the cover is removed, unplug the electrical connector and push it through the opening in the housing


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The blower motor is secured to the housing with three small screws

  1. Allow the blower motor assembly to drop downward to clear the instrument panel and remove from vehicle.
To install:
  1. Place the blower motor assembly into position on the A/C-heater unit and tighten the mounting screws.
  2. Route the blower motor wiring through the blower motor housing and seat the wiring grommet in the hole of the blower motor housing.
  3. Reconnect the blower motor electrical connector.
  4. Install the A/C-heater blower motor cover.
  5. Install the glove box into the instrument panel.
  6. Reconnect the negative battery cable. Check blower motor operation.

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Heater blower on van won't come on. Already replaced heater blower and checked fuses.


Check blower motor resistor make sure none of the spring's are broken, resistor sit next to blower motor in housing, also check blower motor relay for voltage, also sit over by blower motor outside of housing and last check voltage at blower motor switch.Hope this was very helpful,good luck.

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1998 Ford Contour. The heater blower stopped suddenly. I checked all the fuses, good. I removed the blower and hooked it to 12 volts. Whoosh! It almost spun out of my hand. I checked the plug into the...


I dont know what these other guys are saying..I think they snif the glue!!! YOUR BLOWER FAN ASSEMBLY CAN EASILY BE REMOVED !!
1. Remove the wire
2.Find the "tab on the housing and pull it down while rotating the fan housing counter clockwise. This will remove the fan assembly. Plage 12 volts on the contacts to test the motor. If it works then the resister pack is blown. On the fan housing (near firewall ) you will see a plug going into a square looking box with a screw in it. Remove the wire then remove the screw to remove the resistor pack.. A new resistor pack is around 20 dollars at a ford dealer. Hope thie "FREE" info helps!

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1999 Chev Venture Heater core do I need to remove Dash to replace?


The blower motor location can change from year-to-year. It can also change with the trim level of the vehicle. A vehicle that has front and rear climate controls may be configured differently than a vehicle that has front controls only. The following are two different repair procedures. One is for blower motors located and accessed in the engine compartment, the other is for blower motors mounted inside the vehicle.

REMOVAL AND INSTALLATION

Engine Compartment Mounted
  1. Disconnect the negative battery cable.
  2. Remove the engine air cleaner assembly.
  3. If necessary for clearance, remove the left hand wiper arm linkage.
  4. Detach the wire harness connector from the blower motor.
  5. Disconnect the motor cooling hose.
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Oct 08, 2009 | 1999 Chevrolet Venture

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