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

RPM gauge problem

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Old Apr 14, 2026 | 08:51 PM
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VETTEMASTERZ51
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Default RPM gauge problem

Hi everyone,

My C4 has an RPM problem, It revvs all he way up and stays there. Is there any way to calibrate it back to normal?

Thanks,
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Old Apr 14, 2026 | 09:18 PM
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Originally Posted by VETTEMASTERZ51
Hi everyone,

My C4 has an RPM problem, It revvs all he way up and stays there. Is there any way to calibrate it back to normal?

Thanks,
Hi does it show zero rpm ignition on engine off? refer to links below to batee who has some info and repair kits for the tach problems.

https://www.ebay.com/itm/12693864719...sAAOSwFhxef~xD

https://batee.com/pages/1990-1996-corvette

https://batee.com/products/90-96-ana...et-for-6k-tach
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Old Apr 15, 2026 | 04:45 PM
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VETTEMASTERZ51's Avatar
VETTEMASTERZ51
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From: Eastern PA
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It shows 6000RPM when engine is off.
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