got new battery and altenator, but alternator is still not charging battery could it be the pcm

Asked by May 24, 2016 at 11:44 AM about the 2000 Mercury Mountaineer

Question type: Maintenance & Repair

First off, I let my goofy brother hook up my battery and he put the terminals on backwards and tried to start it. In addition, I had to change many blown fuses. the alternator and battery are both new, however, the batt. light is still on and the alternator is not charging battery. could the pcm be bad, it don't seem likely to me seeing how everything else in the truck works ??

1 Answer

4,565

Yes, you may have fried your PCM but if the car is running and showing you the electrical system is not charging, I would look elsewhere. Double check belt tension, wiring to the new alternator, and wiring to the new battery first. Maybe something was not tightened down. If not those things, start with the alternator and have it tested even if it is new.

Your Answer

Add photo

Related Questions

Search Mercury Mountaineer Questions

Mercury Mountaineer Experts

#1 Tom Demyan
Tom Demyan
Reputation 540
#2 kbro
kbro
Reputation 460
#3 tuff4x4
tuff4x4
Reputation 290
View All

Related Models For Sale

Used Ford Explorer
802 Great Deals out of 74,709 listings starting at $750
Used Ford Expedition
405 Great Deals out of 25,163 listings starting at $1,750
Used Ford Escape
1,309 Great Deals out of 94,958 listings starting at $1,400
Used Jeep Grand Cherokee
1,010 Great Deals out of 73,107 listings starting at $950
Used Lincoln Navigator
102 Great Deals out of 5,712 listings starting at $1,499
Used Nissan Pathfinder
266 Great Deals out of 21,928 listings starting at $2,250
Used Ford Mustang
364 Great Deals out of 46,830 listings starting at $1,999
Used Chevrolet Tahoe
563 Great Deals out of 27,153 listings starting at $999
Used Ford F-150
2,213 Great Deals out of 208,669 listings starting at $1,499
Used Dodge Durango
246 Great Deals out of 22,799 listings starting at $1,500
Used Toyota 4Runner
254 Great Deals out of 20,377 listings starting at $1,995

Used Cars For Sale

2010 Mercury Mountaineer For Sale
3 Great Deals out of 75 listings starting at $7,389
2009 Mercury Mountaineer For Sale
24 listings starting at $5,900
2008 Mercury Mountaineer For Sale
3 Great Deals out of 126 listings starting at $3,850
2007 Mercury Mountaineer For Sale
4 Great Deals out of 144 listings starting at $3,470
2006 Mercury Mountaineer For Sale
4 Great Deals out of 161 listings starting at $2,500