1972 Other Chevrolet Models over charging

Tiny
MATTP1972
  • MEMBER
  • 1972 CHEVROLET
Electrical problem
1972 Other Chevrolet Models V8 Two Wheel Drive Manual

my alt is charging to =17 amps changed the external reg.
changed the alt still over charging
looked over the wires under the dash and changed 1
from the key to the firewall

if I do not hook this wire up it will not charge
if I do it charges and the amps keep going up
?
Friday, November 6th, 2009 AT 5:51 PM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
17 amps shouldn't be anything to worry about. Your alternator is probably around 35 -40 amp max. Especially if you have your headlights or a/c on. However if it is charging at 17 volts then it is overcharging and check for a bad battery or a sulfated battery.
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Sunday, November 8th, 2009 AT 10:39 AM

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