1991 Honda Prelude Charging System

1991 HONDA PRELUDE
127,121 MILES • 4 CYL • FWD • AUTOMATIC
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SYPHONFILTER77
  • MEMBER
  • 2 POSTS
My car lights run dim while idling, and brighten up when I accelerate. Battery checked good. I checked the voltage while engine running and voltage drops to a steady 11.6vdc. As I accelerate, voltage increases to 13.8-14.2vdc but as soon as I let go, it drops back down to 11.6vdc. I've changed the alternator twice this year. Do you have any idea what else can be causing that? Thanks!
Aug 31, 2008 at 4:45 PM
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KHLOW2008
  • ✓ASE Certified Mechanic
  • 41,814 POSTS
  • ASE Certified Mechanic
Hi syphonfilter77,

Check if the crankpulley damper is faulty. You might need to replace the pulley.
Sep 1, 2008 at 11:49 AM
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