Question about 1997 Cadillac Eldorado

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Battery is fully charged. All electrical systems fail to work. Any ideas.

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Posted on Oct 07, 2010


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Electrical prob

batteries can be fully charged but fail under load conditions. have a load test done to eliminate the battery as a problem. Check for fusible link near battery and ING fuse near battery

Jan 10, 2015 | 2007 Kia Picanto 1.1


Automobile battery and charging system

Most automobile batteries are lead acid which should have a standing voltage of about 12.6V fully charged at 70 degrees F. To test a battery first it must be fully charged. If fully charged a good battery will stay above 9.5V while cranking engine. Most part stores will charge and test batteries, starters and alternators. To be sure your alternator is properly charging start the engine and turn on the headlights and blower fan to add electrical load. Voltage should be over 13.2V at idle and under 15V with a known good battery. If not check the larger wire bolted to the back of the alternator for loose connection and continuity to the battery. If ok check fuses. If all are present and check good most likely the alternator is bad and needs replacement, although it is possible on many modern automobiles to have a powertrain control module (PCM) be the problem as they serve as the voltage regulator. Most late 90s and newer GM and Chrysler do. If all else fails have a professional check it to be sure. Hopefully this will answer the questions of many. Good luck ??.


on Feb 01, 2015 | Cars & Trucks

1 Answer

Why won't my 2012 Suzuki Grand Vitara start?

ill answer for NO ELECTRICAL POWER :
sure and is easy with any DMM meter, got one? any $20 DMM.
my guess;1
engine will not crank
dash lamps out.
head lights out. dead.
post systems of electrical system , all parts that work and those that dont work, and problem is easy.
cleaned battery terminals.
tried borrowed battery that reads, 12.6vdc ? (charged is 12.6)
2012 that is in warranty car.... ?
my guess on 2012
jumping a car, that is battery jump starting.
a battery can short, and no jump start on earth will start shorted battery in car. but does lay down some big sparks, or burns up cheap walmart cables.
if the car will not crank, say just that, my starter motor will not crank
jump started from live running other car.
if true then make sure headlights work , if they dont work fix that first.
HL must always work, even keys in pocket.
best is to put a fully charged battery in the car, jump starting can cause
surges that can damage sensitive electronic$$$, do jumps as a desperate measure,
with a charged battery,
1: Head lights work, no fix that , use voltmeter
2: cranks robustly.
no , wiggle shifter lever, (on A/T cars the park switch blocks cranking) On M/T the clutch blocks cranking.
with any dMM
measure battery voltage before crank and during.
12.6v good. reseted.
0 to 10v bad (weak battery or shorted starter motor)
11 and above good. and must crank, if not , starter is bad.
to prove starter is bad, check voltage at starter solenoid coil wire lug.
it must be at 11v cranking , below 8v it chatters, and fails.
if at 0v cranking this lug that means the Key start line is failing.
A/T switch not closes, or bad ignition switch.

May 25, 2013 | Suzuki Grand Vitara Cars & Trucks

1 Answer

Problem with lights on my tracker it drain's my battery i have a good altnator on it

If the lights drain the battery when the engine is running, then you have a bigger problem of the alternator not charging, not working. When the engine is running, the alternator supplies all the current to run the car's electrical systems, while also charging up the battery for the next start-up. If you know the alternator is good, then maybe a fuse or fusible link has blown, preventing the alternator from working. To check, put a voltmeter on the battery with engine running-it should show over 13.5 volts if the charging system is working. If the alternator is not putting out, the voltmeter will read same voltage on the battery as when the engine is not running. A fully charged battery should show "around" 12.6 volts. A discharged battery will show less than 12 volts. That should give you an idea of the range to look for on a voltmeter. I believe some parts stores will check the voltage for free. I know most stores will test the alternator and battery for free if brought into the store, but you need the voltage read while on the car and engine running. If the system is charging normally and the lights kill everything, you may have a short in the lighting system.

May 05, 2013 | 1994 Geo Tracker

2 Answers

My car wouldnt start, the electrical system starting going crazy (radio going off and on, etc) then when I went back outside to my car the lights were going off and on by themselves. any ideas?

could be a sign that the computer is failing-though they usually are durable--try disconnecting batt a few minutes and see if it clears and chec for any wiring flaws--get vehicle scanned also--reprogramming a computer should be done before buying a new one

Nov 28, 2010 | 2004 Chevrolet Monte Carlo

1 Answer

I have a 2000 Sonata with an electrical problem. There is no power, but the battery is fully charged and the main fuse is good. When you first open the door the dome light works and you can turn the...

sounds like a bad wire/ground connection.Make sure battery cables are secure to battery and follow them from the battery to there posts.Check to see if they are loose or posts are corroded

Sep 11, 2009 | 2000 Hyundai Sonata

1 Answer

1998 Jeep Wrangler 4cylinder Won't start

Connect the charger to the terminals on the baqttery not the cable ends. This will ensure a good connection. If battery still does not charge fully, replace it, clean the cable ends before attaching them. Then put a volt meter on the battery and check that charging system is putting out at least 13.5v a little more is ok, With accessories on including high beams lowest reading should be 12.75 and not drop even after five or ten minutes.
Jumping across a bad battery will often prevent enough power to the starter, If still in no-start with new battery starter may also have failed.(but will need testing to verify.

Mar 24, 2009 | 1998 Jeep Wrangler

1 Answer

New blower motor but still doesnt blow and battey is dying???

There are three main possibilities:
One is that your battery might not be making a good connection somewhere, like a bad ground or corrosion at one the cable ends, positive or negative. A bad connection will prevent the battery from ever charging fully.
Also make sure no connections are loose.

Another possibility is that you may have a light or other accessory stuck "on" after you leave the car, like a trunk light, etc.

The third possibility is that there is a short somewhere in the electrical system, in the form of a bare wire or malfunction of some accessory which is draining the battery. Sometimes this can be very difficult or time consuming for us non-mechanics to figure out.

If you still have trouble after the battery and connections check out okay, it's probably a good idea to have a mechanic isolate the problem.
On a side note, Caddies have a lot of power accessories so it's good to take them for a good highway drive once in a while to let the alternator fully maintain the battery. Use a battery charger to charge if the battery is really low. The alternator is really used for maintaining a charge, not charging. Using the alternator repeatedly for heavy charging will eventually cause your alternator (expensive) to overheat and fail prematurely.
You may want to check the output of the alternator with a voltage meter. While running, the voltage at the battery should be about 13 -14.7 volts. While the car is off, the battery should be about 12.6 volts but no lower than 12. This may vary a little with the outdoor temperature.
Make sure the water level in the battery is correct -- always use protective eye wear and use extreme caution any time you work around a battery.
A good local mechanic won't charge much to do a basic check up of your charging system and this might be well worth it. He can also verify in fact if the battery is being discharged and how much.
If there is a short somewhere, he is probably your best choice for diagnosing and fixing that.

Feb 02, 2009 | 1992 Cadillac DeVille

1 Answer

Battery/Electrical System Problem.

check the alt might not be charging the battery

Dec 30, 2008 | 2002 Jeep Liberty

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