battery voltage goes up and down while car is parked

Asked by Nov 18, 2016 at 06:59 AM about the 2003 Cadillac DeVille Base

Question type: Maintenance & Repair

2 Answers

98,095

...Sounds like the alternator may be going bad, bring it to Auto Zone and have them do a load test for you (IT'S FREE)........

4,425

How much? Could be just your AC cycling on and off at idle. A slight movement does not mean there is a problem but a big drop indicates something is probably adding a load to the system or your alternator (with internal voltage regulator) is the issue. Like "joemom" said, have it checked first.

Your Answer

Add photo

Related Questions

  • 98 deville rear air ride 2 answers

    My 98 deville has rear air ride that is all the way up. If i leave it sit for an extended period the car goes down. Can someone say what is going on here.

    1998 Cadillac DeVille Base Sedan

    -

    Maintenance & Repair

  • 2000 Cadillac deville won't shift out of park 17 answers

    The shifter moves but won't come out of park

    2000 Cadillac DeVille Base

    -

    Maintenance & Repair

  • how to replace alternator 2 answers

    i need step by step instructions on how to replace the alternator

    1998 Cadillac DeVille Concours Sedan

    -

    Maintenance & Repair

  • Cadillac Deville 2001 won't start, engine won't turn over 61 answers

    My cadillac won't start. When i turn the key the engine wont turn over and when i do turn the key all the way the dashboard lights all turn off. Also on the gear shifter there is no longer a line un...

    2001 Cadillac DeVille DHS

    -

    Maintenance & Repair

  • 04 cadillac deville Car has smoke coming from user the hood 10 answers

    HELP PLZ.I filled my gas tank all the way to the top probably too high to where it came out the nozzle I clicked it like 20 times just so it was filled to the max,which I've done b4. I also put a f...

    2004 Cadillac DeVille Base

    -

    General

DeVille

Looking for a Used DeVille in your area?

CarGurus has 1,595 nationwide DeVille listings starting at $1,995.

ZIP:

Search Cadillac DeVille Questions

Cadillac DeVille Experts

#1 kikero
kikero
Reputation 2,060
#2 Js08016
Js08016
Reputation 1,720
#3 Cynthiasmith
Cynthiasmith
Reputation 1,530
View All

Related Models For Sale

Used Cadillac Eldorado
378 listings starting at $995
Used Cadillac CTS
231 Great Deals out of 11,636 listings starting at $1,599
Used Lincoln Town Car
28 Great Deals out of 1,817 listings starting at $1,650
Used Chevrolet Impala
559 Great Deals out of 28,756 listings starting at $1,595
Used Cadillac Escalade
249 Great Deals out of 10,530 listings starting at $1,490
Used Mercedes-Benz S-Class
152 Great Deals out of 6,366 listings starting at $2,300
Used Chevrolet Camaro
132 Great Deals out of 35,349 listings starting at $1,995
Used BMW 7 Series
169 Great Deals out of 6,141 listings starting at $3,500