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Alternator fusible link problem


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JohnnyLion82
User

Nov 30, 2012, 4:13 PM

Post #1 of 6 (1958 views)
  post locked   Alternator fusible link problem  

1998
Mercury
Villager
2.0 V6?
140,000

Van died after running, wouldn't start or turn over after that. Found the 120 amp alternator fusible link was blown and replaced it but blew again upon reconnecting the battery. Had alternator tested and it was fine. Searched for bare or open wiring but found nothing. Heeeeeelp please


(This post was edited by JohnnyLion82 on Nov 30, 2012, 4:35 PM)


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Nov 30, 2012, 4:51 PM

Post #2 of 6 (1930 views)
  post locked   Re: Alternator fusible link problem  

You have a very serious short circuit that should be pretty obvious in one of the major power feeds. To blow a 100A fuse, you have to have a battery cable shorted directly to ground.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



JohnnyLion82
User

Nov 30, 2012, 5:36 PM

Post #3 of 6 (1921 views)
  post locked   Re: Alternator fusible link problem  

Shorted directly to ground, meaning an exposed wire touching metal correct?


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Nov 30, 2012, 5:39 PM

Post #4 of 6 (1916 views)
  post locked   Re: Alternator fusible link problem  

Exposed, pinched, bolted to the wrong place, etc. A large power supply is going directly to ground somewhere.
First try disconnecting the wire from the alternator itself to eliminate that.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



(This post was edited by Hammer Time on Nov 30, 2012, 5:41 PM)


JohnnyLion82
User

Dec 1, 2012, 1:48 PM

Post #5 of 6 (1887 views)
  post locked   Re: Alternator fusible link problem  

FOUND THE PROBLEM. The positive cable for the battery was frayed almost in half. Had to remove half a roll of elec tape to discover it though. Always the little things smh. $9 fixed the problem. Thanks for the hints! I'll be back sometime with another problem I'm sure lol. Thanks Hammer! Keep up the good work!


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Dec 1, 2012, 3:25 PM

Post #6 of 6 (1882 views)
  post locked   Re: Alternator fusible link problem  

You're welcome.

Question closed as solved



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.







 
 
 






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