On my 186H The voltmeter in the cab is reading low at idle and only slightly higher at higher speeds. The alternator checks out at dealership test stand. Anybody got a clue where to start looking. At full throtlle I have 14.3 volts At batteries but at low idle it drops to battery voltage. the alternator belts are brand new. with headlights the voltage drops but they stay bright. Any help would much appreciated. thanks.
- Thread starter Mike 186
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