1995 Jeep Cherokee Voltage

1995 JEEP CHEROKEE
142,000 MILES • V8 • 4WD • AUTOMATIC
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KJAZZ1313
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What is the normal operating voltage of the alternator. when I first purchased the vehicle it was always over the 14 mark and over the last 2 years I have replaced the alternator twice. It is never over 13.1 V now. Could there be a reason it is so low? I have had a new radio installed and replaced the fog lights with brighter ones.
Aug 16, 2008 at 4:20 PM
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RASMATAZ
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  • ASE Certified Mechanic
Check your battery open voltage should be 12.4 volts or better. If not load test the battery if it won't hold up 9.6volts in 10secs replace it.
Aug 16, 2008 at 4:25 PM
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KJAZZ1313
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It has been tested and is fine. I replaced the alternator today and at it's highest voltage it is 13.1 and it lowest (lights on, radio on) it is at 12.6. I did not try the a/c or any other accessories. When I step on the accellerator the volts don't go up. Does this year have an external voltage regulator? Could that be the problem?
Aug 16, 2008 at 4:30 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
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  • ASE Certified Mechanic
Could a problem with the computer controlled voltage regulator-see below


https://images.2carpros.com/forum/automotive_pictures/12900_regulator_3.jpg

Aug 16, 2008 at 4:38 PM
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