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NEED HELP: Strange Electrical Noise coming from the Dashboard

My 930 1987 Turbo having a very Strange Electrical Noise coming from the Dashboard, I'm sure it is not the front Fuel Pump and Not the A/C Blower as they are all brand new parts, the sound is more like Electrical noise it increase and decrease !!! it sound like Zzzzzzzzzzzzz....,,, Sound

any one have is problem before ?????

Thanks for your feed back

Old 06-28-2012, 09:03 AM
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There is a round cabin temperature sensor mounted on face of the dash on the 1987 models (right side of the steering hub) - the sensor has a small electric fan - maybe this is making the noise?
Old 06-28-2012, 09:29 AM
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Mine makes a faint noise kinda like a tambourine being shaken while accelerating from a stop sometimes.
A buddies 930 does the same thing. We both have 2 bar VDO/NHS mechanical boost gauges where the clock was and he thinks it's the boost gauge making the noise.

I don't know what it is and just enjoy the mystery.
Old 06-28-2012, 11:03 AM
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Could it be the fresh air ventilation fan?
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'85 930 Factory Special Wishes Flachbau
Werk I Zuffenhausen 3.3l/330BHP Engine with Sonderwunsch Cams, FabSpeed Headers, Kokeln IC, Twin Plugged Electromotive Crankfire, Tial Wastegate(0.8 Bar), K27 Hybrid Turbo, Ruf Twin-tip Muffler, Fikse FM-5's 8&10x17, 8:41 R&P
Old 06-28-2012, 11:15 AM
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The increase and decrease in the volume, When i step on the gas peddle it increase, now i think the sound is not coming from the dashboard it comes from the top right side of the Gas peddle
Old 06-28-2012, 05:36 PM
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I don't know what it is and just enjoy the mystery.

Old 06-28-2012, 05:41 PM
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