electrical problem

1991 HONDA PRELUDE
159,000 MILES • 4 CYL • 2WD • MANUAL
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STEVEGREGO
  • MEMBER
  • 1 POST
my alternator is brand new and battery tests good, but whether in use or sitting the battery is losing charge, i can get it jumped off but it immediately cuts back off
Jan 7, 2011 at 1:37 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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KHLOW2008
  • CAR REPAIR CONTRIBUTOR
  • 41,814 POSTS
What is the charging voltage between battery terminals when engine is running?
What is the charging voltage between alternator main mast and ground?
Is there any abnormal belt noises when engine is running? Check the crank pulley for wavy movements and abnormal noise. If present, check if the harmonic damper is bad.





Jan 7, 2011 at 2:50 PM
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