Question about 1995 Isuzu Pickup

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My blower fan dosen't work even after checking all fuses and relays pluse I replaced the motor. It still dosen't work

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It sounds like the fan control switch is faulty or that the connector on the rear of the switch is not making proper contact. It may also be the blower resistor but when any of the the resistors fail, you usually can still get high speed to operate. T o access the switch you will have to remove part of the dash front panel so that you can get to the rear of the switch to check the connector and remove / replace switch which is usually a snap in setup..
You could also check the resistor block for proper connection. The Blower Fan Resistor Block is usually located in the air ducting adjacent to the Blower Fan. The Resistor Block consists of 3 or 4 coils of special resistance wire attached to terminals which connect to the wiring that comes from the fan switch and then to the Blower Fan. The block is on the output side of the fan unit so that the airflow from the fan past the coils inside the duct assists in preventing them from overheating and burning out.
As you already have replaced the fan motor you will know where to look for the resistor block. To replace, remove the multi-pin connector and then undo the screws holding in the block. Check air duct for leaves and dirt which may have caused the coils to fail. Replacement is the reverse procedure

Posted on Nov 07, 2010

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