fan switch and low volts
Thread Starter
Instructor
Joined: Nov 2007
Posts: 213
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fan switch and low volts
i have always noticed the volt meter on occasion drop to 12 volts. and the idle will drop and sometimes the car will stall .
today while using the ac i have noticed the drop falls when i turn on and gets worse when i increase fan speed .
headlights , ac itself and all other accessories do not make such a huge drop .
the oil gauge will start to dance as soon as the volts hits 12.
battery does not die starts no problem .
what should i be looking at or is the fan such a amp draw my alternator just can not handle it ?
any ideas what i should be tackling first?
today while using the ac i have noticed the drop falls when i turn on and gets worse when i increase fan speed .
headlights , ac itself and all other accessories do not make such a huge drop .
the oil gauge will start to dance as soon as the volts hits 12.
battery does not die starts no problem .
what should i be looking at or is the fan such a amp draw my alternator just can not handle it ?
any ideas what i should be tackling first?
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Joined: Jun 2001
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Have your alternator tested. Most auto parts stores wil do a free "stress test" on the battery and alternator.
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David Roberts
2010 Jaguar XKR Coupe - 510HP Stock - Liquid Silver Metallic
928 Owners Club Co-Founder
Rennlist 928 Forum Main Sponsor
www.928gt.com
928 Specialists on Facebook - 928Specialists
Sharks in the Mountains on Facebook - 928SITM
Thread Starter
Instructor
Joined: Nov 2007
Posts: 213
Likes: 1
i ran it to the auto zone the alt was fine they said at 13.57
and the battery was also fine .
so on the way back i ran everything i could again and it stalled out in the driveway . i am wondering if my idle at 635 rpm may be to low.
so i turned the adjustment on the tb screw one rotation counter clock wise .
hopefully it will work.
and the battery was also fine .
so on the way back i ran everything i could again and it stalled out in the driveway . i am wondering if my idle at 635 rpm may be to low.
so i turned the adjustment on the tb screw one rotation counter clock wise .
hopefully it will work.
