1998 Audi A4 Logo
Posted on Nov 23, 2009
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Hi I have a 1998 audi a4 and the blower motor keeps blowing the fuse number 25 once the key is turned on. I know the motor works as I put a hot wire on it, how can i find the short? or fix it with a new power source

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  • hand_m_jay Nov 24, 2009

    everything else works on the car, it seems the brown wire on the blower motor is the hot lead into the motor, does this wire go to the fuse block number 25?

  • hand_m_jay Nov 24, 2009

    everything else works on the car, it seems the brown wire on the blower motor is the hot lead into the motor, does this wire go to the fuse block number 25?

  • hand_m_jay Nov 24, 2009

    everything else works on the car, it seems the brown wire on the blower motor is the hot lead into the motor, does this wire go to the fuse block number 25?

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  • Posted on Dec 04, 2009
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1998 AUDI A-6 BLOWER MOTOR workd on low speeds, but blows the fuse on hight speed ??? Help Clod in Michigan

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  • Posted on Nov 23, 2009
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Hi, first off, check to see if there is anything else on the same circuit, e.g is everything else working with the fuse blown. The cigarette lighter is a favorite. If everything else is ok, use a a multimeter set to amps from the positive battery terminal to the heater motor input terminal (with a suitable fuse in line) to test the amps draw of the motor. You can then compare this with the fuse rating recommended and if it's greater than 2/3 of the fuse rating, then replace the motor. e.g 10 amp fuse 7 amps max loading, 15 amp fuse 10 amp loading.
Hope that helps Matt..

  • Anonymous Nov 24, 2009

    Hi again, have you tried it with the multiplug (heater motor) disconnected? Does the fuse still blow? The brown cable on an Audi is generally the +ve but I wouldn't recommend bypassing it permanently without finding the source of the fault.

    Matt.

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