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06-13-2012, 10:47 AM | #1 |
Drives: Yaris sedan 2007 Join Date: Jun 2012
Location: Costa Rica
Posts: 5
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LOW RPM @Idle speed = Bad Volt Generation?
Hi, I am having troubles with Bat charging. I have 2 weeks driving with 10.8 to 11.5 volts (~70-80% Battery level). I chech my alternator and its working rarely, in some times at low rpm lights start blinking (high ripple voltage). But also, I have noticed Low RPM when car is at idle speed (~400 - 600rpm) are this normal? Anyone knows what is the minimun rpm alternator, to supply 13.8V? Thanks, /jp
Last edited by jp_costarica; 06-13-2012 at 11:06 AM. |
06-13-2012, 11:20 AM | #2 |
Drives: 2009 Base Hatch 2 Dr Auto Join Date: Dec 2008
Location: nj
Posts: 4,790
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I think an alternator pretty much put out 13-14 v even at idle.
Can you have your battery tested under load at a shop?
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06-13-2012, 11:40 AM | #3 |
Drives: 2007 Toyota Yaris Sedan Join Date: Jun 2012
Location: IL
Posts: 14
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Id try and get your battery tested, I think i saw something saying Auto Zone does free battery testing.
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06-14-2012, 02:44 PM | #4 |
Drives: Yaris sedan 2007 Join Date: Jun 2012
Location: Costa Rica
Posts: 5
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Hi All,
I applied the Batt's Garantee, but still with my doubt. I'll have to wait time to probe this, because I have no time to do more testing. Check this: -At iddle speed, voltage on batt terminal is 13.5 (same value adding A/A and lights) -At 2000-5000 rpm, voltage ups to 13.7 Anyone have anysimilar conditions?.m Are this paramethers inside normal operation? My alternator is a NM toyota Denso. thanks any RE: /jp |
06-14-2012, 04:56 PM | #5 |
Drives: 2009 yaris sedan Join Date: Apr 2011
Location: toronto
Posts: 141
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Your alternator output is a bit low, try replacing with a new battery and check your ground connections, if that doesnt help replace alternator.
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Tags |
alternator, battery, low revs |
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