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Old 06-23-2020, 05:28 PM   #6
Bandit130
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Join Date: Dec 2014
Location: Euless, Texas
Posts: 523
Re: Heater core change. Now no charge

Sounds to me like the regulator is intermittently dropping off. Start truck, measure voltage while tapping on alternator to find out if there is change. Don't tap too hard.
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