SPONSORED LINKS

1999 Mazda Protege alternator not charging battery

Tiny
KINKOU
  • MEMBER
  • 1999 MAZDA PROTEGE
  • 1.6L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 975,000 MILES
My Mazda is not allowing the alternator to charge the battery. Both have been replaced and read as good, but still the battery will not charge. Leads, etc all changed (including Main Computer Relay in fuse box). When you turn the key (not start just turn key), a strange "whir-whir" sound comes (kinda reminds me of the sound my son's old cd player makes when changing cds BUT I don't have a cd player in car). Do you have any ideas?
SPONSORED LINKS
Tuesday, April 7th, 2015 AT 4:42 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,128 POSTS
When the car is running, is there any change in the battery voltage? If not and all the wiring is good, I would suspect there is an issue with the PCM. The PCM on this vehicle functions as a voltage regulator.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
+3
Tuesday, April 7th, 2015 AT 5:05 AM

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 to be replaced. This is a common problem for most vehicles and you can...
VIEW MORE

Sponsored links