If your fan is only working on the fourth speed then it's the heater blower resistor. Usually located behind glove box on most cars. Normally looks like a plastic disc, with a resistor on it. The last one I changed was on a Laguna, think I turned it & then came straight off.
If you had a test meter you could test supply to heater blower motor, then to resistor
George.
November 2008
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