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Should gauges peg during start up?

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Old May 19, 2010 | 03:39 PM
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Default Should gauges peg during start up?
Hi,

I just bought my first C5 (2001) and wondered: Is this is normal?

With my 35th Anniversay Trans Am (1999), when the gauges pegged during start up it meant the battery was on the way out. I'd have the battery tested, it was weak and the gauge pegging went away when a new battery was installed.

Thanks in advance
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Old May 19, 2010 | 03:46 PM
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I think what you're explaining is normal.

You turn the key, the gauges go to the very end and then come back to rest on their normal positions? If so, ya that's normal.
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Old May 19, 2010 | 03:50 PM
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Originally Posted by dangerz
I think what you're explaining is normal.

You turn the key, the gauges go to the very end and then come back to rest on their normal positions? If so, ya that's normal.
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Old May 19, 2010 | 03:51 PM
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Originally Posted by Spot Rot
Should gauges peg during start up?
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Old May 19, 2010 | 04:11 PM
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Originally Posted by dangerz
I think what you're explaining is normal.

You turn the key, the gauges go to the very end and then come back to rest on their normal positions? If so, ya that's normal.
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Old May 19, 2010 | 04:13 PM
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Not to worry.
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Old May 19, 2010 | 04:46 PM
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Agreed!
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Old May 19, 2010 | 05:02 PM
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This is only the second post since I've been here that there's been a consensus...

I believe oem electronic gauges sweep as part as their designed calibration process. At least that's how after market street rod manufacturers explained their products to me.
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Old May 19, 2010 | 05:25 PM
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Originally Posted by dangerz
I think what you're explaining is normal.

You turn the key, the gauges go to the very end and then come back to rest on their normal positions? If so, ya that's normal.
me too.i use that as a "timer". when the needles have returned to their zero position, i turn the key. starts immediately.
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Old May 19, 2010 | 05:43 PM
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They're called "Full Sweep" gauges. They do this as a self test. It's perfectly normal.
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Old May 19, 2010 | 05:46 PM
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You bet
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Old May 19, 2010 | 05:49 PM
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A consensus? I'm shocked too.

And pleased.

Thanks
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Old May 19, 2010 | 05:50 PM
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Originally Posted by dangerz
I think what you're explaining is normal.

You turn the key, the gauges go to the very end and then come back to rest on their normal positions? If so, ya that's normal.
That's the way they are designed.
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Old May 19, 2010 | 07:37 PM
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It's what you want them to do.
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Old May 19, 2010 | 08:08 PM
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Old May 19, 2010 | 08:34 PM
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Mine does it.Just figured it was normal.
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Old May 19, 2010 | 08:39 PM
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But what's really cool is the "Corvette" by "Chevrolet" on the DIC
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Old May 19, 2010 | 09:41 PM
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Originally Posted by DeltaBravo
But what's really cool is the "Corvette" by "Chevrolet" on the DIC
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Old May 19, 2010 | 09:50 PM
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Originally Posted by SCM_Crash
They're called "Full Sweep" gauges. They do this as a self test. It's perfectly normal.
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