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Iulian
Date Registered: 09-2017
TOTAL POSTS: 15
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Re: 2006 T30 Battery gets very low after several days/week of non use
My battery is dead over night, the engine won't start in the morning. Recharged the battery and still low voltage in the morning, 10-10,5 V. I recharged the battery until it reached 12,7 V, put it back in the car, started the engine and the voltage drops from 12,7 V to 11,8 V in a second. If I turn the head lights on, the voltage drops to 11,3-11,4 V.
It's clear that the alternator is the problem and I'll replace it with a new unit. If the key is not in the ignition over night, how is the alternator sucking dry the battery? I don't get it....
Any ideas?
Thanks!
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14/Oct/2017, 5:36 pm
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Wiz Au
X-TRAIL ENTHUSIAST
Date Registered: 06-2017
Location: Canberra, ACT
TOTAL POSTS: 185
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Re: 2006 T30 Battery gets very low after several days/week of non use
quote: Iulian wrote:
My battery is dead over night, the engine won't start in the morning. Recharged the battery and still low voltage in the morning, 10-10,5 V. I recharged the battery until it reached 12,7 V, put it back in the car, started the engine and the voltage drops from 12,7 V to 11,8 V in a second. If I turn the head lights on, the voltage drops to 11,3-11,4 V.
It's clear that the alternator is the problem and I'll replace it with a new unit. If the key is not in the ignition over night, how is the alternator sucking dry the battery? I don't get it....
Any ideas?
Thanks!
Most likely, as memtioned earlier, the diodes in the alternator rectifier short to earth. These diodes are directly connected to the battery through the regulator, so are independant of the ignition switch.
--- 2004 T30 series II, Ti (now sold)
JRR50 Pathfinder, QD32ETi Turbo Diesel, with 'lots o fruit'.
2012 Jeep Cherokee KK CRD Limited is current ride.
Will be looking for a white or silver 2011-2013 T31 TL (Diesel) to "pimp out".
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15/Oct/2017, 1:07 pm
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Iulian
Date Registered: 09-2017
TOTAL POSTS: 15
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Re: 2006 T30 Battery gets very low after several days/week of non use
quote: Wiz Au wrote:
quote: Iulian wrote:
My battery is dead over night, the engine won't start in the morning. Recharged the battery and still low voltage in the morning, 10-10,5 V. I recharged the battery until it reached 12,7 V, put it back in the car, started the engine and the voltage drops from 12,7 V to 11,8 V in a second. If I turn the head lights on, the voltage drops to 11,3-11,4 V.
It's clear that the alternator is the problem and I'll replace it with a new unit. If the key is not in the ignition over night, how is the alternator sucking dry the battery? I don't get it....
Any ideas?
Thanks!
Most likely, as memtioned earlier, the diodes in the alternator rectifier short to earth. These diodes are directly connected to the battery through the regulator, so are independant of the ignition switch.
I removed the alternator last night, it's hard to acces it, I think it's position is too low for a 4x4 car. The positive feed, covered by a red rubber was full of rust and green deposits, and the plastic around it was melted. Also, there was a little black box ( 2 x 2 cm ) with a yellow wire that it's missing, somebody removed it. It was conecting the positive feed of the alternator with the body of the alternatort ( earth ). I found only a part of the box, no trace of the yellow wire that was coming out of it.....
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15/Oct/2017, 9:02 pm
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Revhead Kev
Date Registered: 10-2006
Location: Mona Vale, Sydney, AUSTRALIA
TOTAL POSTS: 6355
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Re: 2006 T30 Battery gets very low after several days/week of non use
Get a hydrometer and check the specific gravity of the battery fluid in each cell to make sure they are good to hold a charge.
--- Kev X450(c) T30 Guru
03 Titanium Ti T30 Series 1 **MODIFIED**
My Blog
My CarPC Worklog
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16/Oct/2017, 9:04 am
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