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#1
03-07-2006, 02:04 AM
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Humidity and electrical gremlins
Does anyone know how humidity affects electrical components? The last few days it's been raining pretty consistently here, and I noticed yesterday that my tachometer (which has been dead for the last 6 months) suddenly started working again. And a couple of interior lights (which would power on whenever the engine was on), now work properly (only when the head lights are on). Does the humidity even have anything to do with this, or is it coincidental?
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#2
03-07-2006, 12:55 PM
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I can only give you my opinion as an electronics guy. Humidity does not affect electronics in general. Most electronics are specified for "95% RH non-condensing". Which is to say, as long as it is not actually wet then it's OK. I suspect it is just a coincidence.
Mike
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1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine) 1988 F150 144,000 miles (leaks all the colors of the rainbow) Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra
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#3
03-07-2006, 01:03 PM
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Give your fuses a few spins.....then squirt some WD on the connectors
[ lightly]
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#4
03-07-2006, 01:10 PM
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While humidity may not effect a properly functioning circuit board, it can have a profound effect on marginal connections -- on a circuit board or on the connector leading to-from it.
The prime suspect in any intermittent electrical problem on a car is a bad connection somewhere. I'd start checking grounds. (and fuses as Arthur suggested) Just my 2 cents... arguably worth that. Jeff Pierce
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Jeff Pierce Current Vehicles: '92 Mercedes 190E/2.3 (247K miles/my daily driver) '93 Volvo 940 Turbo Wagon (263K miles/a family truckster with spunk) '99 Kawasaki Concours Gravely 8120 Previous Vehicles: '85 Jeep CJ-7 w/ Fisher plow (226K miles)'93 Volvo 940 Turbo Wagon '53 Willys-Overland Pickup '85 Honda 750F Interceptor '93 Nissan Quest '89 Toyota Camry Wagon '89 Dodge Raider '81 Honda CB 750F Super Sport '88 Toyota Celica '95 Toyota Tacoma '74 Honda CB 550F
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