Have checked for power in wires to motor and resistor .there is no juice. how could be no juice when all fuses good and relay good?
I don't have a diagram for a 2008. On 2005 models the blower motor relay gets power from a 30amp fuse.
When the blower switch is in the high position the resistor is bypassed and power flows directly to the motor. The motor is grounded to the car.
The fan relay also gets power from a 7.5amp fuse and is controlled by the HVAC control on the dash.
Do you have power into and out of the relay?
SOURCE: No Electrical Power to Heater Blower
First thing to check would be the fan speed resister, fan(blower-motor)relays, and possibly a bad ground. Start at switch on the dash and go to the relays and resister next.
SOURCE: front blower motor will not
This may be a faulty Blower motor resistor, usually mounted inside the blower motor air box, or defective blower motor. There is no single Relay for the blower motor.
SOURCE: 1997 Eclipse RS, 2.0L: Blower motor suddenly
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There is a fuse box/relay under the hood. Check the box if there are blown fuse and relays that you need to replaced.
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SOURCE: trouble shoot blower motor switch
Often times the problem is the blower resistor not the switch.
You would use a meter or a test light to check for power at the resistor and also the switch. The resistor controls power to the blower motor to adjust speed.
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