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Old 11-07-2018, 09:14 PM   #4
68gmsee
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Join Date: Jul 2007
Location: Centrally located between Houston, Austin and Waco. BCS area.
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Re: Temp Gauge fluctuates big time

The air pocket is a good possibility since you had to open the cooling system to install the sending unit. If all is good there then a defective temp gauge may be the problem.
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