Have your (alternator) Charging system tested ! .This is a computer controlled charging system .
The body control module (BCM) is a class 2 device. It communicates with the powertrain control module (PCM)/engine control module (ECM) and the instrument panel cluster (IPC) for electrical power management (EPM) operation. The BCM determines the output of the generator and sends the information to the PCM/ECM for control of the generator field control circuit. It monitors the generator field duty cycle signal circuit information sent from the PCM/ECM for control of the generator. It monitors a battery current sensor, the battery positive voltage circuit, and estimated battery temperature to determine battery state-of-charge (SOC). The BCM performs idle boost and load management operations.
Powertrain Control Module (PCM)/Engine Control Module (ECM)
The PCM/ECM directly controls the generator field control circuit input to the generator. It monitors the generator's generator field duty cycle signal circuit and sends the information to the BCM. The PCM/ECM will override the BCM control of the generator when one of the following conditions is met:
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The engine cooling fans are on high speed.
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There is a high fuel demand.
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The calculated ambient air temperature is less that 0?°C (32?°F).
SOURCE: car keep dying
something is not shutting off when you shut off the car... if you have a multimeter check for current drain on the battery with the key off.
Robert
Should be a small miniscule amount of drain (keeps the memory on your radio)
SOURCE: 97 subaru outback legacy intermitent electrical problem
I would have all the grounds checked. Sounds like it is not grounding properly. This will in turn not allow the battery to charge correctly and will make other electrical devices to operate incorrectly. For example the body ground if not good it will try to find another ground IE the shift cable. This is not designed to maintain a connection of amperage and will allow battery to die. Also will cause problem with cable and could fatigue it enough to break. Just check for good grounds on motor and body. Hope this helps. Good Luck.
one of the problems could be , you have a bad drain on battery, check charging system,if you disconect battery and hook it back up does it ark if so check all elecrical components for drain
SOURCE: Fuel Gauge Stuck on Full 98 Pontiac Montana
When gauge is pegged at full, usually means a bad ground. Check wires at fuel tank, wiggle around, maybe one came off. The bad news is it is hard to get to without removing the tank. Sometimes you can reach arm in and get to them. Also check body ground at read of van.
SOURCE: Air bag Light Stuck On 98 Pontiac Montana
Under the front seats you have wires going to your seat belt anchors.These wires are atached to a sensor witch activate the air bags if the anchors have force pull on them.The wires have plugs under the seat.Disconnect the plugs and spray with electical cleaner and replace.Make sure the ignition is switched off befor you attemt doing.90%of the time this will work.good luck.
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