CHECK BATTERY ALARM - ENGINE SHUT DOWN
2005 Isuzu NPR • 200 miles
First morning start up, Check Battery alarm comes back on, 30 secs later - shuts down engine, usually on 3rd restart I can pull out on the street with the alarm coming on then off occasionally but without engine shut down. Pre-start battery voltage 12.5 (cleaned terminals/cable connections, and main ground), replaced alternator, still have same issue
November 17, 2011.
November 17, 2011.
When ht alarm is on check battery voltage. And check voltage while starting car and immediately after/continuous. Does car have an ammeter on dash?
I will monitor battery on alarm, and during and after start up. Your thinking even though the battery has the voltage, it may not be carrying the Amps behind it. Good thinking. Will let you know. No ammeter, idiot lights. Smart Charger does not indicate any battery prob ie. Open cell fault, etc. And since I've replaced the alternator, I believe I hear an increase in cranking power.
Checked - dead cold, 42 degrees outside - pre-start, both batteries (parallel +together, -together) read 12.4V. Started right up, with engine running both read 14.25V. Alarm sounded both still had 14.25V, til auto shut down, and both went back to 12.5V, Repeated, had same results
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