Hooper
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For some reason when my air compresor runs my voltage surges and all my light get brighter. It will go away as soon as the compressor shuts off. Any ideas?
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My lights get brighter on my A3......
- Thread starter Hooper
- Start date
Heavysteven
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Grounds loose?
NMCShooter
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Loose belt?
Hooper
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Nothing found so far.
Hooper
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Some holy water then?
steelandcanvas
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Ditto!
HASSON1911
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I've had the same problem. but i've only recently noticed it after i installed my 6 flood lights. and i know my belts are tight. i was curious about it too.
shenkmen
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Clearly the pressurized air in the tanks is back-feeding the air compressor and spinning your alternator and engine faster.
Just kidding.
Just kidding.
CanonNinja
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when it gets brighter, scream at it.
"THE POWER OF CHRIST COMPELS YOU!"
repeat until problem goes away.
"THE POWER OF CHRIST COMPELS YOU!"
repeat until problem goes away.
NMCShooter
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The only thing in common between the two is the belt....maybe it slips on the alternator till the compressor loads it.
SFGABN@5th
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Have you looked at your votage indicator on you dash while this is happening?
Hooper
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Yes, it pegs to the right.
Welder Sam
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glcaines
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Where is the meter at when idling? Is it on the mark as it should be. As others have said, the only thing in common is the belt. You can usually look at the belt and see if it has been slipping. You might want to just go ahead and replace the belt since it probably needs it anyway if you haven't changed it since recovery.
CobraCDR
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I love it, this one cracked me up.
booger
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My voltage occasionally surges too when my headlights are on. I don't think there is any relationship to the compressor though. The voltage meter always sits right where it should in the green without the headlights on. I have noticed when the headlights get brighter the meter is pegged to the max.
Hooper
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Yes, it always does it when first started and then on occasion as I drive and yes the head lights do get brighter when the needle pegs to the right. It returns to the green after a few minutes. The belt looks new so I guess I will not worry about it.
G-Force
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Ummm....correct me if I'm wrong but doesn't the compressor belt just run down to the crank pulley and the alternator belt run around the crank and water pump pulley? I would put a digital volt meter on the alternator output and see what the voltage is when the dash needle pegs. It sounds like you're losing your ground for your alternator and its basically full fielding the alternator and will eventually fail.