C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Diode on the A/C compressor???

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Old 05-15-2002, 12:32 PM
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NUckINg FuTS
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Default Diode on the A/C compressor???

Is the side of the diode with the silver band connected to the green or black wires on the compressor connector??? If someone can check that out for me I would appreciate it! Thanks.
Old 05-15-2002, 12:52 PM
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VetteNoob
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Default Re: Diode on the A/C compressor??? (NUckINg FuTS)

Hey,

Ill check it when I get home tonight. Im tackling the AC nightmare right now too. Can you do me a huge favor and put a voltmeter on the green and black at that plug and let me know how many volts it shows when you turn on the AC? Mine is showing 8 volts only and Im not sure if that is right or not.

Thanks.
Old 05-15-2002, 01:00 PM
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ZylaRace
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Default Re: Diode on the A/C compressor??? (NUckINg FuTS)

I don't know which is which, but the line goes on the supply side. As in one is the supply (pos voltage), the other is the return (lower voltage/ground). I'm not sure which side of the compressor circuit the safety switches are on, so it is difficult to dwscribe from here.
Old 05-15-2002, 02:24 PM
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NUckINg FuTS
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Default Re: Diode on the A/C compressor??? (VetteNoob)

Hey,

Ill check it when I get home tonight. Im tackling the AC nightmare right now too. Can you do me a huge favor and put a voltmeter on the green and black at that plug and let me know how many volts it shows when you turn on the AC? Mine is showing 8 volts only and Im not sure if that is right or not.

Thanks.
VetteNoob, I have the same problem you do. My compressor won't turn on either. I found out that my a/c pressure switch went bad so that might be the same problem you have. Now to find were I can buy a new switch.
Old 05-15-2002, 02:29 PM
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VetteNoob
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Default Re: Diode on the A/C compressor??? (NUckINg FuTS)

Do you happen to have a digicam where you can post a pic of the switch?
Old 05-15-2002, 02:45 PM
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NUckINg FuTS
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Default Re: Diode on the A/C compressor??? (NUckINg FuTS)

Here's a little schematic I made on MS paint to clarify my question:



I need to know if the band on the diode faces the green/white wire or the black wire.
Old 05-15-2002, 02:47 PM
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VetteNoob
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Default Re: Diode on the A/C compressor??? (NUckINg FuTS)

Just got back in from lunch, forgot I drove the vette eventhough it is my daily driver. :rolleyes: On mine, the band is nearest the black wire.
Old 05-15-2002, 03:33 PM
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NUckINg FuTS
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Default Re: Diode on the A/C compressor??? (VetteNoob)

Thanks buddy!!! :cheers:

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