SPONSORED LINKS

A/C causes alternator output charging voltage to drop

Tiny
GPWALTER
  • MEMBER
  • HONDA CIVIC
I have a 2001 Honda Civic LX sedan with 133,000 miles 1.7L with A/C. The a/c causes the alternator output to drop from 14.2 volts to 12.6 volts and eventually causes the car to quit running due to the battery being unable to maintain the correct voltage. Have anybody ever heard of this before? I originally thought the alternator was bad but, with all accessories turned on the alternator produces 14.2 volts until you activate the a/c. Can anybody help me?


Thank youi
SPONSORED LINKS
Friday, October 5th, 2007 AT 4:53 PM

1 Reply

Tiny
FAIRRACING31
  • MECHANIC
  • 150 POSTS
You could have a short in the A/C clutch, You still need to have your battery and altenator checked out. It is possible that when you turn your A/C on, you lose enough RPM that the alternator cannot keep up. Also be sure your battery terminals are clean and cables are working fine.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Friday, October 5th, 2007 AT 8:09 PM

Please login or register to post a reply.

Related Alternator Not Charging Content

Alternator Replacement
VIDEO
Alternator Replacement
Instructional repair video
Alternator Replacement
GUIDE
Alternator Replacement
Got a red battery warning light on? This most likely means the alternator has gone out and needs a replacement. To confirm the failure use a voltmeter to test the alternator...
VIEW MORE

Sponsored links