Car turning off

Asked by Nov 17, 2016 at 11:17 PM about the 1999 Cadillac DeVille Sedan FWD

Question type: Maintenance & Repair

My 99 deville keep losing power, I have gotten a  
new alternator and battery, it's odd though because
while I'm driving the volts go up (11ish while
headlights are on/12 ish while they are off) but as
soon as I'm not hitting the pedal to accelerate the
volts drop and the car shuts off and won't turn
back on until I recharge that battery, any help
would be awesome thanks in advance

3 Answers

85,885

11 volts is very low. If you have a volt meter in the dash it should read somewhere around 13 volts. I think your alternator is not working or that it is very weak. While the car is running check the voltage at the battery with a meter, it should read about 13.5 to 14.5 volts.

2 of 2 people found this helpful.

So maybe the new alternator that was put in is faulty? Idk I'm fed up with this car but it's so beautiful I can't help but to keep trying thanks I'll swap it out 1 more time

85,885

Maybe it is faulty or you have a bad electrical connection some where. Clean and tighten the battery connections and check the alternator connection too. Buy a quality rebuilt. Most of the chain stores sell crap. Look for one that has all new internal parts.

1 of 1 people found this helpful.

Your Answer

DeVille

Looking for a Used DeVille in your area?

CarGurus has 1,506 nationwide DeVille listings starting at $1,999.

ZIP:

Cadillac DeVille Experts

  • #1
    kikero
    Reputation
    2,250
  • #2
    Js08016
    Reputation
    1,960
  • #3
    Cynthiasmith
    Reputation
    1,750
View All

Related Models For Sale

Used Lincoln Town Car
31 Great Deals out of 1,731 listings starting at $1,099
Used Chevrolet Impala
565 Great Deals out of 34,334 listings starting at $900
Used Cadillac Escalade
249 Great Deals out of 11,859 listings starting at $1,200
Used Mercedes-Benz S-Class
148 Great Deals out of 8,119 listings starting at $1,200
Used Lincoln Continental
14 Great Deals out of 3,387 listings starting at $32,794
Used Chevrolet Tahoe
801 Great Deals out of 41,544 listings starting at $1,987

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.