Supercharger gauge reading at 0 all the time??? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 06-19-2005, 06:40 PM   #1
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Default Supercharger gauge reading at 0 all the time???

hey guys
my booster gauge is now reading at 0 all the time. It should be all the way over to the left at idle correct? When i turn the key the gauges bounce around like they should but then the needle goes to the middle and stays there any suggestions to what it could be?
thanks
John
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Old 06-19-2005, 07:09 PM   #2
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Either the MAP sensor went bad or the vacuum line running to it has become damaged or unhooked at one end, causing the MAP sensor to see only atmospheric pressure (0).
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Old 06-19-2005, 07:33 PM   #3
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Default thanks but i have another symptom

Now at idle it will rev way down like it is going to die, i goose it a little and it does?? Does that sound like a map or a vacumm line?
thanks for your help
John
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Old 06-19-2005, 11:00 PM   #4
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Sounds like you broke the T fitting under the nosedrive of the SC, as evidenced in your other post.
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Old 06-19-2005, 11:12 PM   #5
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Was the end of that open vac line lying under a black box? Plug it into that.
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Old 11-01-2007, 08:33 AM   #6
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I have this same thing My booster gauge sits at the middle always no matter how fast i go or dont go it never moves. Is this a big problem ?
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Old 11-01-2007, 09:30 AM   #7
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Quote:
Originally Posted by jdsonic
I have this same thing My booster gauge sits at the middle always no matter how fast i go or dont go it never moves. Is this a big problem ?
Problem from a gauge standpoint, no. Many supercharged cars (non bonne) came w/o gauges. A few bonne'* came w/o gauges.

From a potential vacuum leak aspect..yes. Take a look around the motor and fix'er up.
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Old 11-01-2007, 09:44 AM   #8
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Thanks So it would be somesort of vacum leak you suspect huh ? The car has only 47,000 miles on it ..? Also i found a small silver toggle switch on the driver side along the cover for the shift ? is that normal do u know ?like a kill switch ? i tried it while was on it flashed the dash lights completely off!
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Old 11-01-2007, 09:47 AM   #9
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Silver toggle may be better handled in the electrical section with a picture. I can tell you it'* not from the factory.
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Old 11-01-2007, 10:00 AM   #10
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Thanks I will take a picture of it and place in the electrical section. i really appreciate your input !
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