Question about Cadillac STS

1 Answer

Alternator is overcharging windows quit letting up and down side mirrors quit working battery not charging service security system light are displayed on the screen have changed alternator,battery still problem exist have checked all wires everywhere please reply quik

Posted by on

  • 1 more comment 
  • chreskin3 Feb 02, 2010

    up to 16.4 to 16.5 while driving constantly ive bout a new alternator,battery you name it ive done it all

  • chreskin3 Feb 02, 2010

    1998 cadillac sts

  • chreskin3 Feb 02, 2010

    ground cables were the very first thing i checked battery conections all of that

×

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

  • Cadillac Master
  • 77,194 Answers

What is the output voltage of the alternator? I absolutely need this info to see if it is really overcharging, which based on what u have replaced i doubt is the problem here.

Posted on Feb 02, 2010

  • 4 more comments 
  • yadayada
    yadayada Feb 02, 2010

    what year is this car?

  • yadayada
    yadayada Feb 02, 2010

    hang on need to look up some info.

  • yadayada
    yadayada Feb 02, 2010

    have you replaced the negative battery cable, if it is not making a good connection at the block or the battery you will get an overcharge condition, are the battery + cable connectioins to the power distribution box under the hood tight? same goes for the connection at the battery posts, they must be clean and tight. also who provided the alternator? is it the only one you tired? Kragen and Autozone alternators are very poor quality

  • yadayada
    yadayada Feb 02, 2010

    then pull the alternator off and replace the rectifier inside.

  • yadayada
    yadayada Feb 02, 2010

    what about the power distribution box??

  • yadayada
    yadayada Feb 02, 2010

    are u aware there is a recall on this car for u guessed it overcharging condition.



    go to the link.



    http://www.motortrend.com/cars/1998/cadi...

×

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

75 series landcruiser is charging at 16.7+ battery light and filter light are both on is this an earth problem, how do i check earth


agree larry on the overcharge , quite possible for that old truck to have a remote regulator or one that is replaceable on the back, after all it is still charging

Mar 07, 2015 | Cars & Trucks

1 Answer

Overcharging alternator?


yes it is possible

Jun 20, 2017 | Cars & Trucks

1 Answer

Car wont start light are dim, car making clicking noise when trying to start and electric windows wont let up or down


Charging system issue on car.
The car battery,alternator,fuses and relays needs to be inspected.
I suggest you to check out this help links given.Click the link below to go through the procedure,so as per that you can troubleshoot the problem .
How to inspect Vehicles Alternator?

http://repairhelpcenter.blogspot.com/2011/11/how-to-inspect-vehicles-alternator.html

--------------
How to Test Vehicles Alternator?

http://repairhelpcenter.blogspot.com/2011/11/how-to-test-vehicles-alternator.html

------------
How to Service Vehicles Alternator?

http://repairhelpcenter.blogspot.com/2011/11/how-to-service-vehicles-alternator.html
------------
How to Replace Alternator?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-alternator.html

----------
How to monitor Vehicles charging system?

http://repairhelpcenter.blogspot.com/2011/11/how-to-monitor-vehicles-charging-system.html

-----------
Car Alternator making noise? http://repairhelpcenter.blogspot.com/2011/11/car-alternator-making-noise.html
---------Car Alternator Working Intermittently?

http://repairhelpcenter.blogspot.com/2011/12/car-alternator-working-intermittently.html

----------
Car Alternator Bearing Makes Grinding noise?

http://repairhelpcenter.blogspot.com/2011/12/car-alternator-bearing-makes-grinding.html

----------
How to Inspect Alternator Drive Belt?

http://schematicsdiagram.blogspot.com/2011/12/how-to-inspect-alternator-drive-belt.html

-----------
How to replace Alternator Drive Belt? http://repairhelpcenter.blogspot.com/2011/12/how-to-replace-alternator-drive-belt.html----------- Power windows not working after car wash?

http://howtobyme.blogspot.com/2011/11/power-windows-not-working-after-car.html

--------------
Car battery loosing its charge overnight?

http://schematicsdiagram.blogspot.com/2011/11/car-battery-loosing-its-charge.html

-------------
How to maximize fuel economy on your vehicle? http://schematicsdiagram.blogspot.com/2011/11/how-to-maximize-fuel-economy-on-your.html
-------------Charging system problem troubleshooting? http://technoanswers.blogspot.in/2012/02/charging-system-problem-on-chrysler-lhs.html
------------For All types of Power window problem http://repairhelpcenter.blogspot.com/2012/01/pontiac-grand-am-power-window-not.html----------This will help.Thanks.

Jan 26, 2012 | 2003 Buick LeSabre

1 Answer

2005 silverado z71 5.3. Under normal acceleration all lights will pulse rapidly (at least once a second or faster). Checked alt output at idle- 15.3/15.5 Didnt have a second person to throttle it to check...


Yes,it is,the alternator is charging to much,this can lead to other component failures.Have the alternator changed,not just the regulator in the alternator,if a diode has burned threw,it can,and most likely is,putting out some ac voltage,witch is very bad for the ignition system,and it will put ac voltage in the battery.The pulsing is from ac voltage,not just a dc overcharge.The alternator should be 13.65 volts,to 14.25 volts,at the battery.Most of the time,when there is a pulse,in the lighting,and the alternator is charging around 15 volts,there is ac volts present.so this means,the battery would need to be changed also,to prevent any other problems.I hope this was helpful,and if so,please let us know,thank you.

Jan 03, 2010 | 2005 Chevrolet Silverado 1500 2WD

1 Answer

BATTERY OVERCHARGED AND ALTERNATOR IS FINE


If you have a fully charged battery when you installed then 14 volts is way to much charge for the battery which would mean that the alternator probably has a faulty regulator and the alternator needs to be changed otherwise you will continue to install new batteries. If the battery was in an uncharged state then it is possible for the alternator to charge at full capacity to charge up the battery.

Dec 17, 2009 | 2002 Nissan Altima

2 Answers

My battery keeps diying on my cutlass. this will be the third battery in a month. what is killing my battery?


could be anything take it to Autozone and have them test the altanator and regulator with one battery cable off and with a test light put one end on battery post and one to the cable if the light comes on you have a short somewhere or a light on in the trunk or glove box. But the charging system has to be tested and the battery cables have to be tested for resistance.

Aug 06, 2009 | 1972 Oldsmobile 98

1 Answer

Battery overcharges and light is on


Never saw a charging system problem cause anyone to fail inspection. But, overcharging will cook the water out of your battery and can damage the computer system if not taken care of. Overcharge can be caused by either a grounded alternator field wire or a bad regulator. Since the condition appeared after replacing the alternator it too is suspect as an internal grounding can also cause that.

Jul 20, 2009 | 2003 Ford Focus

1 Answer

Alternator not charging idiot light off


sound voltage regulator. you need 13.5 14.5 to charge battery .12.volts not enough. dash light warning light bulb could be burn out.

Mar 06, 2009 | 1991 Nissan Sentra 2 Door

1 Answer

Replaced loose battery terminal and alternator light is now on


If an alternator overcharges, it will most probably spit out electrolyte from the filler caps or vents when run for a time. It may also become quite hot to touch.
Providing the engine is starting OK, and the charge warning light on the panel is not alight or flashing on and off, what you need to do is have a voltage check done on the battery with the engine running. If the alternator is OK, the voltage should be in the vicinity of 13.5- 14.0 volts (13.8 is the accepted "standard").
Any higher, it could indeed be overcharging.
Turning on the headlights should not materially change this voltage.
If the voltage is only around 12V or even less, turn on the headlights, and observe it again.
A low voltage can mean the alternator is not charging.

Jan 08, 2009 | 2000 Ford Escort

1 Answer

Several secondary electrical systems not working -- 1998 CLK


They can check the battery and the charging system for starters. Fully charged battery,clean cables. then do a load test on the battery. If it didn't pass the test replace it and check the charging system.
Charging system easy to check , Put voltmeter on battery terminals and monitor vehicle's voltage with and wthout accessories on. should be between 13.5 to 14.5v . Before condemning alternator inspect wiring behind alternator ...if corroded replace then retest.
If voltage is with range then the problem is in the power distribution compartment/ relay, or either is a ground all those items share.

Aug 13, 2008 | 1998 Mercedes-Benz CLK

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

54 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cadillac Experts

yadayada
yadayada

Level 3 Expert

77194 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22265 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a Cadillac Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...