Question about 2001 Pontiac Montana
While driving my battery light goes on and off When van has sat for 3 days in winter it hesitates when starting it
The battery light means the alternator is not charging the battery. The charging system would need to be checked out when the light is on.
Posted on Feb 07, 2014
CHECK CHARGING CIRCUIT WITHOUT LOAD
(a) Connect a voltmeter and an ammeter to the
charging circuit as follows.
If a battery/generator tester is available, connect the
tester to the charging circuit in accordance with the
(1) Disconnect the wire from terminal B of the
generator and connect it to the negative (-)
(2) Connect the positive (+) ammeter lead to
terminal B of the generator.
(3) Connect the positive (+) voltmeter lead to
positive (+) battery terminal.
(4) Ground the negative (-) voltmeter lead.
(b) Check the charging circuit.
(1) Keep the engine speed at 2,000 rpm and check
the reading on the ammeter and voltmeter.
10 A or less
13.2 to 14.8 V
If the result is not as specified, replace the
If the battery is not fully charged, the ammeter
reading will sometimes be more than the
8. CHECK CHARGING CIRCUIT WITH LOAD
(a) With the engine running at 2,000 rpm, turn on the
high beam headlights and turn the heater blower
switch to the HI position.
(b) Check the reading on the ammeter.
30 A or more
If the ammeter reading is less than the standard
current, replace the generator.
If the battery is fully charged, the ammeter reading
will sometimes be less than the standard current. In
this case, operate the wiper motor and the window
defogger to increase the load and then check the
charging circuit again.
Posted on Mar 05, 2014
Alternator to be repaiored or replaced,check battery charging voltage by voltmeter it should above 12.5-14.00 volts
Posted on Feb 07, 2014
Your car is equipped with a system called PASSKEY standard on all GM cars and light trucks, try the following procedure to reset the system, the battery being dead will trigger the system.
PASSKEY LOCKOUT RESET GM CARS 1999 UP
1) Put the key in the ignition and turn to the "ON" position. Leave it that way for 10 minutes. After 10 minutes turn the key and take it out. Repeat this process (2) more times (3 times, 30 minutes total) This should reset the passlock system to recognize your key.
Posted on Mar 30, 2009
Tips for a great answer:
Dec 21, 2014 | Cars & Trucks
Nov 17, 2017 | Chevrolet Lumina Cars & Trucks
Feb 06, 2018 | 2004 Toyota Sienna
Feb 13, 2011 | 2002 Land Rover Freelander
Sep 01, 2017 | 1997 GMC Safari
Aug 05, 2010 | 1991 Plymouth Sundance
Jan 07, 2010 | 2000 Chevrolet Astro
Jan 12, 2009 | 2006 Mitsubishi Eclipse
178 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: