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Alt light--Little different question
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ldj1002
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PostPosted: Sat Jun 04, 2016 7:19 am    Post subject: Alt light--Little different question Reply with quote

I've had my car about 10 months and never drove it at night until yesterday. The alt light glows real dim. I had always thought it was completely out after starting engine. I tried lights off and on it still glows either way. I suppose it does it in daytime also but just can't see it. It keeps the battery charged. Is this normal or is the alt. charging a little low. It is Motorola with internal reg.
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Cusser
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PostPosted: Sat Jun 04, 2016 7:31 am    Post subject: Re: Alt light--Little different question Reply with quote

This is not uncommon with alternators in other vehicles.

Set DC voltmeter 0-20 scale, start engine, rev to like 2000 rpm with lights on, record and post voltage. If 13.5 or so to 14.4 volts, then happy driving.
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runamoc Premium Member
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PostPosted: Sat Jun 04, 2016 4:20 pm    Post subject: Re: Alt light--Little different question Reply with quote

Quote:
This is not uncommon with alternators in other vehicles.


True, had this problem with a GM alternator. Turned out to be a shorted diode in the 'diode pack'. Bosch alternators have 'diode packs' too.
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