Grand prix won't charge when it is very cold, why?

Asked by Jan 07, 2015 at 07:38 PM about the 2001 Pontiac Grand Prix GTP Coupe

Question type: Maintenance & Repair

Got a new battery.  In the summer runs fine.
When it gets below freezing, dash and
lights run dim, and battery lite comes on.
After it runs for a while everything will get
bright and it will charge normally.  I ran it to
Chicago from WI twice this weekend,  no
problems.  I can even shut it off for an hour
or two with no problems.  Overnight or for
more than 4 hours in the freezing cold and
it starts fine, but doesn't charge.  It will
usually drain the battery before the
charging kicks in. But if I jump it and let it
run until warm, then all is well. Also, revving
it when the battery light comes on will solve
the issue for a minute other two.  Once it
kicks in, dash and lights brighten up and
charges normal.  Had the alternator
checked[while warm] and it was putting out
120 amps.

4 Answers

14,040

possibly a diode in the voltage regulator. with the engine running you should have 13.5 to 14.5 volts at the battery. a multimeter will tell you .

Best Answer Mark helpful

Is that internal within the alternator?

14,040

Yes. Put a multmeter on it.

Replaced alternator, problem solved

Your Answer:

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 1,695 nationwide Grand Prix listings starting at $1,500.

ZIP:

Pontiac Grand Prix Experts

  • #1
    Js08016
    Reputation
    4,740
  • #2
    Tom Demyan
    Reputation
    3,320
  • #3
    munron
    Reputation
    2,900
View All

Related Models For Sale

Used Chevrolet Impala
510 Great Deals out of 26,020 listings starting at $995
Used Pontiac Bonneville
3 Great Deals out of 326 listings starting at $2,900
Used Chevrolet Monte Carlo
4 Great Deals out of 969 listings starting at $1,125
Used Pontiac Grand Am
741 listings starting at $2,500
Used Chevrolet Malibu
621 Great Deals out of 50,838 listings starting at $600
Used Ford Mustang
297 Great Deals out of 39,759 listings starting at $1,312
Used Chevrolet Camaro
242 Great Deals out of 26,934 listings starting at $2,900
Used Pontiac Firebird
6 Great Deals out of 685 listings starting at $3,995
Used Nissan Altima
840 Great Deals out of 61,663 listings starting at $1,000
Used Honda Accord
686 Great Deals out of 101,993 listings starting at $999

Used Cars For Sale

2008 Pontiac Grand Prix For Sale
8 Great Deals out of 266 listings starting at $1,690
2007 Pontiac Grand Prix For Sale
243 listings starting at $2,295
2006 Pontiac Grand Prix For Sale
3 Great Deals out of 283 listings starting at $1,500
2005 Pontiac Grand Prix For Sale
218 listings starting at $1,995

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.