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1995 Jeep Cherokee Voltage

Tiny
KJAZZ1313
  • MEMBER
  • 1995 JEEP CHEROKEE
  • V8
  • 4WD
  • AUTOMATIC
  • 142,000 MILES
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.
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Saturday, August 16th, 2008 AT 4:20 PM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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.
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Saturday, August 16th, 2008 AT 4:25 PM
Tiny
KJAZZ1313
  • MEMBER
  • 2 POSTS
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?
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Saturday, August 16th, 2008 AT 4:30 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Could a problem with the computer controlled voltage regulator-see below


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

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Saturday, August 16th, 2008 AT 4:38 PM

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