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Old 08-04-2016, 02:13 PM   #1
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1992 30' Airstream 30
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Air bag compressor doesn't turn on anymore!

Getting ready for a trip to Los Angeles (9 hours), and now the air bags aren't filled and I don't hear the compressor turn on anymore.

It was cycling on when I would turn the ignition on to test my mirrors, which had a bad ground. Now the compressor doesn't work.

Could it be a bad ground wire somewhere behind the dash that I may have loosened up?

What should I check for?
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Old 08-04-2016, 02:58 PM   #2
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Your first choice is to check the fuses. While the ignition is on. If they are not marked as to what they feed lift the output side and check for voltage. I say that way because a visual check is not 100% correct.

If the fuses are good go to the compressor and check for voltage at the connector there. If you have voltage at the compressor while the ignition is on and no compressor it may be a bad compressor.

If there is no voltage at the compressor check the wire back to the fuse block. Not a likely problem.
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Old 08-04-2016, 03:16 PM   #3
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I'll take the cover off the compressor and check if there's power there. The book says it has two automatic breakers only, 20a and 30a, no fuses.

I'll check anyway.
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Old 08-04-2016, 05:00 PM   #4
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Automatic breakers can fail so if you don't have power at the compressor definitely check the breakers themselves.
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Old 08-04-2016, 05:11 PM   #5
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Not sure how to check them since they are sealed metal units that look like large fuses.

Would I be able to get replacement breakers at NAPA parts?
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Old 08-04-2016, 05:33 PM   #6
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If you didn't have voltage at the compressor then you would just need to check for voltage on each side of the automatic breakers. If both sides measured to ground show 12 volts DC then the breaker is good. If one side has 0 volts then the breaker is likely bad and should be replaced.
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Old 08-05-2016, 06:09 AM   #7
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Do you own a power probe ? If not I strongly suggest you purchase one, it would have helped you out and saved you alot of time on the mirror problem, and now you could you use it on your compressor problem, Regards, Bob
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Old 08-05-2016, 06:56 AM   #8
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You have a pressure switch also. Use your multi meter to test to make sure its functioning. The switch should be located close to the compressor. With any electrical problems on these beasts I always check the easiest things first, fuse/breaker/ground connection etc.. The factory wiring to the compressor is pretty straight forward. Poke around and youll find the problem. But like Bob said, a tester/multimeter is essential.
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Old 08-05-2016, 06:59 AM   #9
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The ground wire for the compressor is located at the compressor, not behind the dash. (should be anyway)
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