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Have dual battery system with solenoid SBI12 fitted. Does this allow 2nd battery to charge effectively after main battery is charged

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That would be the normal expectation

Posted on Aug 09, 2017

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Posted on Jan 02, 2017

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SOURCE: support for the charging system

Check with dealer there are recalls on the 2000.

Posted on Nov 23, 2008

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SOURCE: electical power only to starting and charging systems, none to any thing else?

i would suggest that u start to check power from 85A main fuse it supplies the power to all those circuits! circuit must be open!

Posted on Apr 19, 2009

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SOURCE: battery won't keep a charge

not quite a solution --- but also check for parasitic current draws --- in my 1991 its the older security alarm system that runs down my battery in less than a week ususally. I could replace it with a newer smaller current one - but have gotten used to just keeping the car on a charger all the time since I don't use it for weeks at a time. Therre are a lot of other cutrrent draws due to all the interior lights - have you changed your routine since the fix. Maybe that window/switches was reassembled incorrectly.
By the way those regulator cables (in the 1991 it was a flexible plastic tape --- that gets brittle and breaks) are basically defective across the whole cadillac line going into the 2000+ models.
I just had a regulator tape replaced for about 300$. GM wanted $500. The tape itself cost just under $100 .... but the labor is a bit tedious.
Also when I left that shop my battery was dead (went in with the usual full charge) and they had to jump it when I left --- they ran it down using and testing with the window motor and having the doors open for several hours and the interior lights on - so perhaps you just need a full overnight charge.

Posted on May 02, 2009

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SOURCE: how to charge dual batteries

There should be a bridge mounted close to the main battery. Make sure that bridge is on. Now connect your charger to the main battery. This will charge both batteries evenly.

Posted on Nov 09, 2009

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SOURCE: Battery was dead and tried to start after

okay,think of it this way,you tried starting,engine turned slowly,no start.....then you charged battery,engine wont turn over(although accessories work)WHY WAS THE BATTERY DEAD TO START WITH.Try a jump start(another battery)if it starts then you know what im going to say.....

Posted on Nov 06, 2010

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2 Answers

2011 dodge grand caravan engine malfunction light keeps coming on. Dealer traced it to a bad battery, had a new one installed and codes disappeared. Now light is back on. Codes P0740/P0562 show up


P0740 torque converter malfunction
Possible causes
Low or dirty transmission fluid
Faulty torque converter clutch solenoid valve
Torque converter clutch solenoid valve harness is open or shorted
Torque converter clutch solenoid valve circuit poor electrical connection

P0562 charging system voltage low
Possible causes
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Jul 04, 2016 | 2011 Dodge Grand Caravan

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My cb250n is sluggish misfiring backfires and maine lights dim when turn signal used


battery problems , connection problems or alternator not charging
have a load test done on the battery and the charging system checked
from you description there is insufficient current from the battery to run the electrics

May 09, 2016 | Cars & Trucks

1 Answer

Where is the transmission control module located on 2005 Mazda 6


Safe mode limits engine performance, and does not effect transmission, especially not by eliminating first and second.
The main way to get out of safe mode, is to remove the battery long enough for the whole system to discharge and reinitialize, so by changing the battery, you likely already did this.
More likely is why the battery died? If you have a wire rubbed through, that could be shorting everything? Have you done a voltage output check on charging system? But other than linkage switches, the transmission control module is inside the trans oil pan, where all the solenoids are. You can drop the pan to ensure all the connections are solid and jump the solenoids to ensure they are not burned out.

Jan 10, 2016 | 2005 Mazda 6 i

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I have a 1985 RV Ford Econoline w/ a 460 eng.,but my problem is electrical,possibly the solenoid,which we replaced.I deduce that the solenoid could be bad,or the wrong one,because the Onan generator will...


check and make sure all batterys are good make sure alt. out put is 12.9 to 14 volts make sure charging cable from front to generator battery is working if it has a seperate charging system for generator battery or batterys,check and make sure charger is working properly if not replace charger or run no. 8 wire from front charging system to gen. battery make sure main engine is running while you start gen. after gen starts turn engine off

Aug 16, 2013 | 1988 Ford Econoline

1 Answer

Alternator good , battery good, belts on a/c bad can this cause battery not to charge?


What do you mean by bad A/C?If the A/C doesnt come on but the pulley turns without interference to the drive belt then No. It doesnt effect the charging system, what does effect the charging system is the ability of the battery to hold a charge.The average life of a battery is 5 years, The terminals how good of a connection are they? clean and have a solid connection.Have the battery tested,remeber the charging system should be 2 volts above battery voltage

Nov 12, 2012 | 1993 Buick Park Avenue

1 Answer

I have a 99 K2500 Suburban with a dual (isolated) battery system. I don't want the accessories to drain the starting battery.. Can't i just move the accessory feeds (from the starter or main...


I don't know how whatever accessories you have are hooked up but,

When I would run two batteries for my stereo in my car I had it connected to the auxilary battery. The isolators kinda **** because they are to send more power from the charging system to the battery that needs the most charge. They do not "isolate" as in makeing the system use one battery while not draining the other.

What I did was to hook a solenoid (mine was aftermarket but I think the old style Ford starter solenoids that bolted to a fender will do the same) inline of the battery cable so when my key was off one battery would be cut off from the other. That way I could play the sterio without draining the battery that started the car (the radio was on a rocker switch for when I needed to kill power).

Sep 03, 2011 | 1999 Chevrolet K2500

2 Answers

Why does the voltage drops when idleing,


Your idle speed may be too low. It is common for the Alternator to slow down with the engine RPM. You can get a free scan of your charging system at Autozone or Oreillys. You may have a lazy Regulator which is not allowing more power through.

Some cars like Ford products have a sensor which automatically increase idle speed to keep the Voltage up. In your brand you need to ask a Dealer. When your car has more equipment demanding power than the Alternator produces, the Voltage will drop.

You may want to install a new Serpetine belt and check your Tension pulley for a tight fit. If the belt is sloppy it can effect the charging system.

Feb 20, 2011 | 2002 Kia Rio

2 Answers

Wont start have replaced new battery no power going thru what should i check next


This clearly indicates either the connections, cables, or the solenoid/starter is bad. Unless,,, you have a bad ground.

I suggest that you spend a few minutes cleaning the ground contacts with emery cloth to make sure they are all clean & doing their job, expecially the large one going to the engine/trans as it is the one needed for cranking the engine, the small grounds provide the finishing circuit for the electrical system beyond the starting system.

Make sure your battery terminals are exceptionally clean, tight fitting on clean posts & tightened to where they are snug, then coat with grease to seal & protect.

Recharge the battery if it is not above 12 Volts. A new battery doesn't reach peak voltage until charged. Most parts stores sell the batteries2_bing.gif with the charge that they built by adding the electrolite & it usually works fine, but cold weather dictates that they should be charged before being installed to prevent excessive wear on the alternator which has to work extra hard to charge a weak battery & keep the car going with all of the accesories working.

You should also check the starter/solenoid main connections for corrosion, and while you have any cable in your hand, bend it & listen to see if you hear the corrosion inside the cable making noise. If so, replace the cable.

If you've don all of this and it won't crank, take the starter off & go get it bench tested, it or the solenoid should be the problem at this point.

t's a lot of info, but there are many considerations to the entire starting system.

Good luck

Feb 18, 2010 | 1996 Oldsmobile 88

1 Answer

Brand new battery. Car tries to start but won't turn over. Other battery died and I replaced it today. Still won't start.


This clearly indicates either the connections, cables, or the solenoid/starter is bad. Unless,,, you have a bad ground.

I suggest that you spend a few minutes cleaning the ground contacts with emery cloth to make sure they are all clean & doing their job, expecially the large one going to the engine/trans as it is the one needed for cranking the engine, the small grounds provide the finishing circuit for the electrical system beyond the starting system.

Make sure your battery terminals are exceptionally clean, tight fitting on clean posts & tightened to where they are snug, then coat with grease to seal & protect.

Recharge the battery if it is not above 12 Volts. A new battery doesn't reach peak voltage until charged. Most parts stores sell the batteries with the charge that they built by adding the electrolite & it usually works fine, but cold weather dictates that they should be charged before being installed to prevent excessive wear on the alternator which has to work extra hard to charge a weak battery & keep the car going with all of the accesories working.

You should also check the starter/solenoid main connections for corrosion, and while you have any cable in your hand, bend it & listen to see if you hear the corrosion inside the cable making noise. If so, replace the cable.

If you've don all of this and it won't crank, take the starter off & go get it bench tested, it or the solenoid should be the problem at this point.

It's a lot of info, but there are many considerations to the entire starting system.

Feb 18, 2010 | 2002 Ford Mustang

2 Answers

How to charge dual batteries


connect charger to one battery they are hooked up in series. however you should load test each battery first to locate any faults.

Nov 09, 2009 | 2007 GMC Sierra 3500

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