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1986 911 Carrera Air Conditioning

Heating and Ventilation

Vehicle Information: Model: 911 Targa; Year: 1986; Body Type: Targa; Engine (type, size, modifications): 3.2; Total Mileage: 84,000;

I just got my Targa in May, and I'm not a mechanic. My Haynes book is nohelp at all. When I turn on the A/C it blows okay, until I hit a bump,and then there is a loud squeal or roar sound from under the dash on thepassenger side. (I've looked, but can't find the source) I can turn theA/C off, and the noise stops, then I can turn the A/C back on and itsquiet again. I've pulled the blower motor from near the spare tire and itseems to be working fine, is there another hidden fan somewhere insidethe air ducts that could be locking up, and if an internal fan exists canit be pulled out or bypassed?

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