Does your mech mean nine volts total alternator output? If so, then start the engine and disconnect the battery and then measure the voltage at the battery terminals and see what you get. If it won't run w/o the battery connected, then your alternator is rapidly heading south (or maybe already there). The car is old enough to be entitled to a new alternator, don't you think??

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Jeff Lawrence
1987 300e
1989 300e
2000 Dodge Grand Caravan SE