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Electrical issue

Tiny
PLUDIE02
  • MEMBER
  • 2000 JEEP CHEROKEE
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 144,000 MILES
2000 Jeep Cherokee 144,000 miles 6cyl. While driving the vehicle the lights on the dash start to dim, radio resets, blower gets lower. As I accelerate the lights get brighter, gauges come back and the blower gets louder. Engine runs good. Checked battery terminals good. Battery, alternator were tested by two people and alt and battery are in good condition. I think there is a possible ground issue. ANy thoughts?
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Wednesday, February 2nd, 2011 AT 11:45 PM

4 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,758 POSTS
You need to test the charging voltage at idle and at cruise. You may also have to test the amperage output at max and at idle.
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Thursday, February 3rd, 2011 AT 12:00 AM
Tiny
PLUDIE02
  • MEMBER
  • 3 POSTS
Only other test I completed was at idle I had 14.5 charging volts. Now I didnt check going down the road but had the car be placed in gear with foot on brake and volts dropped to 13. Now another thing appeared as well a check engine light came on. The code that was generated was P0715. Not sure if this is coincidince or not.
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Thursday, February 3rd, 2011 AT 12:17 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,758 POSTS
Test the amp output of the charging system.
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Thursday, February 3rd, 2011 AT 12:21 AM
Tiny
PLUDIE02
  • MEMBER
  • 3 POSTS
Will do thanks.
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Thursday, February 3rd, 2011 AT 12:23 AM

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