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battery light on.. dropping revs, also, radiator fan staying on.. (91 si4ws)

 
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Old 03-08-2012, 06:21 PM
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battery light on.. dropping revs, also, radiator fan staying on.. (91 si4ws)

Hi guys,

I had my battery light come on thismorning mid-drive. revs started dropping when idling. If i let it idle it'd bounce up n down from 800-1500rpm, unless i revved the engine to keep them up... was still ok to drive the rest of the way, another few blocks...

Iv had an alternator die on me in another car and it felt quite different to that (because in that case, revving the engine made it drop out more)

any ideas?/what does battery light usually mean?


On another note, a strange thing I noticed a few days ago:
occaisionally after turning the car off, the radiator fan will stay on after closing/locking the car.. this just stays on (seemingly indefinately).. fan turns off if i turn the ignition to half on, but turns back on if i ignition off.. If I actually start the car and turn it back off, the fan will stay off..

i guess this will be draining my battery too so a bit of a worry.. i wouldnt think the two issues are related but i dont know

any advice would be greatly appreciated!


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91' SI4WS - recent convert to preludes. love it
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Old 03-31-2012, 02:16 AM
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Re: battery light on.. dropping revs, also, radiator fan staying on.. (91 si4ws)

As far as your radiator fan coming on, my '89 S does the same thing, but only in the warmer months (I'm in NS, Canada). I was worried about it at first too but I read online somewhere that when you turn your car off that's when your engine will get it's hottest, so that's when the fan will come on. Mine in the hottest months would run as much as 10mins after then engine was shut off, but it will always flick itself off. Sit by it some day and listen to the fan run, I would say if it's still going after 15mins you may have a relay problem???
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