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Old 06-27-2011, 09:35 AM   #1 (permalink)
jjcsnlynn
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Battery Overcharging or Leaking--I don't know

Did a search but can't find anyone with the same problems.

When I bought the truck in December I had the passenger battery with acid all over and running down the top of the battery. I thought it was overcharging so from advice of the forum, I ohmed out all the battery cables. They were less than 0.2 ohms (even through the junction box connection).

I later found (thought to be) the problem as rain water dripping on the passenger battery causing it to run down the truck.

I pulled both batteries and took them to Advance Auto and they both tested good, just low charge. SO I charged them on a slow charge and reinstalled them. At the same time, my windshield washer pump housing broke so I replaced it (April). I pulled both battery trays, cleaned them up and repainted them. I use some battery acid cleaner (was in a yellow can at Advance, that turns red when comes in contact with acid) to clean everything up before I reinstalled the trays. The batteiries are only two years old (PO got them from battery warehouse) and they are not Optimas.

Last week my washer pump went out again! During the fix, I found my drivers battery is leaking and running down onto the washer pump and melting it! WTF!

Interesting enough, when I pulled the positive off the drivers battery while I went to get another pump and rehooked it all up, my radio time had to be reset. This is telling me the passenger battery is dead.

I'm at my wits end and plan to put it into an auto electrical shop to figure this out. Any ideas out there?

I only drive it about 10 miles a week and I think the batteries are getting too low and somehow the acid is getting out of the caps. I was planning on getting Optimas, but just read up on them and they don't seem right for my application.

I went camping this weekend and drove it for about an hour each way and monitored the voltmeter and it ranged from 14-16 volts all weekend.

HELP...

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Old 06-27-2011, 02:51 PM   #2 (permalink)
IGO1320
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16VDC is too high and will boil the acid out of the batteries. I would start with two new "correct" batteries (I use AC delco) then check your charging voltage with a voltmeter and let us know what you see.

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Old 06-27-2011, 06:43 PM   #3 (permalink)
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Why not pull the belt off (1/2" sq drive), remove the 10mm nut on the cable to the batteries, then pull out the two 15mm bolts holding the alternator on and take it up to be tested?
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Old 06-27-2011, 06:45 PM   #4 (permalink)
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Also keep in mind that if one battery starts to get weak or go south, it'll take the other one with it.
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Old 06-28-2011, 07:21 AM   #5 (permalink)
jjcsnlynn
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The alternator looks new. I think I'll pull it and get it checked.

I drove it to go fishing last night and it's not 14-16 volts; it's 14-15 volts. I read the gauge wrong.
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03 VW Jetta TDI (Wife Crashed it)
200K+ miles, 40-45 MPG

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Auto, 248k Miles

96 VW Passat TDI
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Old 06-28-2011, 09:32 AM   #6 (permalink)
IGO1320
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You really shouldn't see any more than 14.5vdc, that being said I would still start with two new "correct" batteries no matter what you find with the alternator.
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2006 2500HD CCSB 4X4 RED LBZ
Spray-In Bed Liner, Air Bags
Custom Reese 20K slider FWH/Gooseneck hitch
265/75/16 Michelin LTX AT2's on PYO's
Duramax.com tow tune w/turbo brake
PPE Dual Fueler (P0087 cure)
Kitty on a "warm shelf", K+N Drop-in filter
Amsoil in all places, Amsoil BMK-27 Bypass
KYB shocks (stock sucked)
Autometer Boost/Pyro gauges/Edge CTS
EGR blocker and (Kennedy) finger stick
Merchant remanufactured transfer case 748,000
Kennedy lift pump, reserve tank with transfer pump
Suncoast trans and 1700 stall converter @ 748,000
14.558 @ 91.03 Hypertech now?????
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Old 06-28-2011, 01:09 PM   #7 (permalink)
jjcsnlynn
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When you correct batteries do you mean AC Delco? I've had a lot of success using Interstate batteries on my other cars.
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02 VW Jetta TDI
330K+ miles, 48-52 MPG

03 VW Jetta TDI (Wife Crashed it)
200K+ miles, 40-45 MPG

95 Silverado K2500 6.5L TD Ext Cab, 4x4
Auto, 248k Miles

96 VW Passat TDI
200K Miles, 48 MPG (Belongs to my Son)
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Old 06-28-2011, 05:20 PM   #8 (permalink)
boothybunch
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Some old fords over here in the uk used to suffered with water running onto the top of the battery and working it's way into the batteries. Sounds like you have that problem.
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Old 06-28-2011, 07:43 PM   #9 (permalink)
IGO1320
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Interstate batteries are made by the same manufacturer as AC Delco. I was refering to a quality set of batteries (Interstate is fine) of correct rating.
__________________
2006 2500HD CCSB 4X4 RED LBZ
Spray-In Bed Liner, Air Bags
Custom Reese 20K slider FWH/Gooseneck hitch
265/75/16 Michelin LTX AT2's on PYO's
Duramax.com tow tune w/turbo brake
PPE Dual Fueler (P0087 cure)
Kitty on a "warm shelf", K+N Drop-in filter
Amsoil in all places, Amsoil BMK-27 Bypass
KYB shocks (stock sucked)
Autometer Boost/Pyro gauges/Edge CTS
EGR blocker and (Kennedy) finger stick
Merchant remanufactured transfer case 748,000
Kennedy lift pump, reserve tank with transfer pump
Suncoast trans and 1700 stall converter @ 748,000
14.558 @ 91.03 Hypertech now?????
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