Question about Chevrolet Suburban 1500

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Replace voltage regulator 2000 suburban 1500

Put new battery today, had alternator checked ok but charging system error. Car is now dead on side of road with new battery dead

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You don't say what year your truck is but since the 70's the alternator and voltage regulator are housed together. Use a voltmeter to check the output from the alternator to a good battery when running it should be putting out 13-14 volts if not there is your problem.

Posted on Jan 17, 2013

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Posted on Jan 02, 2017

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SOURCE: 1988 chevy suburban charging system

First check alt At The Back of Alt Big Red Wire Were hooks to Post (stud) Do you have voltage ?? How Much??
What Voltage do you have at same Place with Engine Running ??
Now At wires Were they plug into Alt ,Top. Wires in White Plastic Clip, Do You Have Powe With Key On ?? How Much Voltage??
Jump across the 2 in the clip (with Engine Running)ONLY TEMPORARY!! Do You Have Voltage at Battery ?? How Much??
If Over 13volts With Clip On (Jumped) You Need A Internal Voltage Regulator ..
Is Batt Light On on Dash ??? Theres A Lot Of Testing You Can Do !!! And I will Need More Infomation to Keep Going ... These are just some Possible Problems No Way In Depth ...
Could Be a Number of things Or May be Just as Simple As a Blown Fuse, Dirty Batt Cables ETC etc etc I Hope It Puts You On The Right track !!!!!!!!!!

Posted on Jan 07, 2009

  • 299 Answers

SOURCE: replaced the battery and the alternator in 2006 ford taurus

check the alternator fuse and grounding

Posted on Sep 25, 2009

BCAS1298
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SOURCE: New battery went dead. Alternator tested with

No that's good alternator voltage, you could have a defective battery or if it don't start after sitting for a whole could have an elec. draw, if this is the case disconnect the neg. terminal and hook a test light at cable end and the pointer at battery if test light lights up you have a draw, remove dome light fuse and light bulb under hook, start pulling one fuse( under the hood and on the side on dash ) at a time and keep an eye on the test light when light goes out that's the problem, check that circit.

Posted on Jan 08, 2010

  • 382 Answers

SOURCE: My battery keeps dying. Have replaced the battery,

Usually this happens when you have a drain on the battery somewhere. i would check the car over really good to make sure there is nothing running after you shut it off. Listen to see if you can hear the fuel pump running or anything that may draw on the battery. This kind of drain is extremely difficult to trace.

Posted on Sep 17, 2010

canwoodjc
  • 3301 Answers

SOURCE: i have charging system problem on my 2006 toyota

your battery could have a dead cell and still register 12 volts when not running,, if your getting 13.67 volts on the posts with the car running, the alt is fine,, but the battery is faulty,, take it and have it load checked, that way you can be sure it has the amperage that its supposed to have,

Posted on Sep 05, 2011

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2003 Jimmy 4.3 Battery drained down every few days and had to be charged. Today the battery was dead. Replaced it.


check charging rate on new battery with engine running, should be 13.7 +.
if not, check alternator.
if alternator checks out, may be a drain somewhere, light on someplace, etc.

Oct 06, 2015 | GMC Jimmy Cars & Trucks

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2002 Ford Focus, driving down road, airbag light comes on, dashlights go out, engine runs rough then quits. Restarts, goes one block, quits again.


Symptoms of a charging system problem. The charging system comprises the alternator, battery and associated wiring. If the alternator should fail to produce a sufficient or stable enough voltage for the car's electronic systems - due to a wiring short, faulty voltage regulator, or corroded electrical connector, for example - the car will run off the "reserve" in the battery for a short time until the battery is eventually depleted. (The battery itself could also contribute to the problem if it has a faulty cell or for some reason is causing the alternator to put out an excessively high voltage in an attempt to compensate.)

So a couple of quick checks: Measure the battery voltage with the car off. Yours sounds like it will be dead; the clicking while attempting to start is the starter relay not getting enough juice. Then the question becomes: Is the battery dead because of age (fails to hold a charge) or because the alternator isn't charging it? To answer this question, measure the voltage at the battery with the car running. (Jump it or substitute a known good 12V battery.) You should see 14+V. If you only see 12V or less, you're seeing only the current battery charge without any contribution from the alt.

Finally, don't assume because the alt isn't putting out anything the alt is at fault. The wiring harness and electrical connector to the back of the alt should be thoroughly examined. (The wiring connector is a known failure point on early models.) The wiring harness should obviously show no signs of burning, melting or chafing and the battery terminals should be corrosion free and tight. If the harness checks out, remove the alt and have it bench tested. Rebuilding usually gives better long term reliability than chain store bought reman units, I'm told.

Long story short, I suspect the voltage regulator in your alternator failed, the battery gave it's all trying to keep your car running, finally gave up and now you have a dead alt and a dead battery. Don't just install a new battery without doing the alternator voltage output tests.

If you're really lucky it could be as simple as loose or corroded battery terminals.

Dec 31, 2012 | 2002 Ford Focus

1 Answer

Brand new battery on 1995 VW Jetta keeps being drained and car shuts off.


Have you had your alternator checked ?
If there is no charging from the alternator the "problem" will be solved as long as the new battery retaing its voltage. As soon as you start to use power you drain the battery. it's a bit like putting air into a punchured tyre ..... its still punchured . Could be your original problem ! ! Good luck

Aug 01, 2012 | 1995 Volkswagen Jetta

2 Answers

Sometimes it wont start and the other day I was driving down the road and it just died and now it wont start


Is it cranking or is there nothing when you turn the key? So you have interior lights?

Mar 05, 2011 | 2001 Kia Sportage

4 Answers

My car will start and idle fine even with lights, heater, ect turned on but when i start to drive it the battery will drain, why? We put a new alternator on the car and are still having the same problem.


Possibly the new alternator is bad or is not hooked up properly. Take it to any major auto parts store and they will do a free diagnosis of your charging system to help pinpoint the problem.

Jan 08, 2011 | 1991 Honda Accord

1 Answer

I have a 2000 ford focas manule and i left my place and it starded to jump like losing power i try to shif down and it would **** and **** i stop on the side of the road and stoped the car and when i went...


When you start your car,it starts by the battery. Then the alternator takes over the rest of the duties,including keeping the battery charged. I would start with having the alternator checked. A bad alternator can have the same symptoms.When you alternator goes bad,it cannot power things like the fuel pump and thus cannot get fuel to the engine.

Oct 03, 2010 | 2000 Ford Focus

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My lexus E350 battery goes dead if car is not used for a week. Had the battery checked with dealer says it is OK


This has happened to me TWICE in the past 4 months. I had Lexus road side service come out both times to check the car out. Each time the battery was totally dead. The road side mechanic said that if the car is not driven at least 15 minutes nonstop a day, the battery runs dead as there are so many draws from the car on the battery. If you do alot of stop and start driving like I do, that isn't enough to recharge the cell of the battery, it must be non stop driving time. Recommend that I get a 1.5 tricky charge device an hook to battery at least one night a week to keep the battery charged. This is really frustrating with such a new car. I've spoken to other owners of other model luxury cars and no one has had this problem.

Sep 13, 2010 | 2007 Lexus ES 350

1 Answer

1995 Lincoln Continental - 4.6 li engine. Car was running fine. Then charging system error began and car eventually drained the battery and left me on the side of the road. I replaced the alternator AND a...


Do yourself a favor , don't play the swap parts game ! Take it to a quailfied repair shop . Every body thinks they can fix car's .They read a little an assume that's the problem . There are specific test for checking fuel pressure an testing the fuel pump electrical circuit . If you want to fix cars go to school . You can't just replace PCM'S - powertrain control modules , they need to be programmed . This requires a factory scan tool or a J-2534 pass through device . Fuel Pump Electrical Circuits Description and Operation

Mar 07, 2017 | 1995 Lincoln Continental

2 Answers

2002 VW Jetta GLI 2.8 V6 All dash Lights came on Battery Dead (new Battery) Pulled Altenator and had tested (tested ok) Altenator belt torn on side, could this cause problem? What could it be?


this does sound like a bad alternator,have the battery tested and check the connection at battery and positive feed cables form battery,next time all the lights come on have the charging system check dont remove alternator,also make sure the power cable to alternator is good,ive had a few of these they get hot and dont charge, have them tested and they tell me its good, put it back on car and customer is back again,i replace the alt and problem solved. hope this helps.ps check the alt fuse.

Mar 03, 2010 | 2002 Volkswagen Jetta TDI

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My car head lights is going dimmer and dimmer the lights are not so bright


Sounds like alternator not charging, better have it and battery tested.

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