09-02-2019, 01:48 AM
|
#1
|
|
Member
|
|
Join Date: Apr 2013
Location: Denver
Posts: 31
|
|
|
Member
Join Date: Apr 2013
Location: Denver
Posts: 31
|
New alternator blowing main fuse
2007 V8 4wd
Hi everyone, I just replaced the alternator (AutoZone reman) and battery on my 4runner and am having a problem. When I went to reconnect the battery it shorted and blew the main 140 amp fuse. My wife said she thinks she saw sparks from the area near the alternator and it definitely arced on the main battery post.
Any ideas what could have caused this? The connectors only go on one way and the wiring etc all looked to be in good shape. The battery was working fine before I pulled the alternator.
I'm going to get a replacement fuse tomorrow if anything is open but I'm concerned I'll just blow another one and possibly damage something important. Speaking of which I am really worried something may have fried. I didn't smell anything burning but still... The vehicle did start but wouldn't go into gear etc. with the blown fuse.
Any help is most appreciated!
Last edited by Superhero; 09-02-2019 at 01:59 AM.
|
|
 Reply With Quote
|
|
09-02-2019, 01:54 AM
|
#2
|
 |
Elite Member
|
|
Join Date: Sep 2005
Location: Oakland CA
Age: 36
Posts: 5,063
|
|
|
Elite Member
Join Date: Sep 2005
Location: Oakland CA
Age: 36
Posts: 5,063
|
try another alternator, at least disconnect everything and go over all connections. might have missed a wire or new alternator just bad.
__________________
Pioneer DEH-80PRS,Rockford Fosgate T600-2,Hertz ML 1650.3(2 pairs),T400-2,Hertz ML 280.3(2 pairs),T1000-1bdcp,(2)JL Audio 12W6v3, Mechman 240a HO Alternator, Dual Northstar 31m,Borla Dual Exhaust,AFE Magnumforce intake.Enkei WT-4 Michelin Defender LTX 275/55R20. retrofitted S2000 projectors,Philips 85122 White Vision,Morimoto 5Five Ballast.Diode Dynamics SS3 Yellow Fog Sport.2 pairs of Hella Supertones.Full led conversion on interior and exterior.HAWK Talon Rotors and LTS pads F+R,Stoptech stainless steel lines F+R.Bilstein 5100 @0.85, MOOG FJ Springs front,Bilstein B12 36-281824 rear .
|
|
|
Reply With Quote
|
|
09-02-2019, 02:00 AM
|
#3
|
|
Member
|
|
Join Date: Apr 2013
Location: Denver
Posts: 31
|
|
|
Member
Join Date: Apr 2013
Location: Denver
Posts: 31
|
Is it possible to get to the connectors on the alternator without pulling it? I'd like to do that first before having to take the whole thing out again. That's a pain in the ass.
Quote:
Originally Posted by riceandpho
try another alternator, at least disconnect everything and go over all connections. might have missed a wire or new alternator just bad.
|
|
|
|
Reply With Quote
|
|
09-02-2019, 07:43 AM
|
#4
|
|
Junior Member
|
|
Join Date: Aug 2019
Location: Bali
Posts: 4
|
|
|
Junior Member
Join Date: Aug 2019
Location: Bali
Posts: 4
|
Quote:
Originally Posted by riceandpho
try another alternator, at least disconnect everything and go over all connections. might have missed a wire or new alternator just bad.
|
+1
|
|
|
Reply With Quote
|
|
09-02-2019, 10:51 AM
|
#5
|
|
Junior Member
|
|
Join Date: Aug 2019
Location: Cataula, Georgia
Posts: 11
Real Name: Bob
|
|
|
Junior Member
Join Date: Aug 2019
Location: Cataula, Georgia
Posts: 11
Real Name: Bob
|
It's possible to get a bad alternator out of the box, take it back.
|
|
|
Reply With Quote
|
|
09-02-2019, 12:13 PM
|
#6
|
|
Member
|
|
Join Date: Apr 2013
Location: Denver
Posts: 31
|
|
|
Member
Join Date: Apr 2013
Location: Denver
Posts: 31
|
Thanks for the input! Look like I'm spending labor day pulling the alternator again. Gah.
|
|
|
Reply With Quote
|
|
09-02-2019, 02:58 PM
|
#7
|
|
Member
|
|
Join Date: Apr 2013
Location: Denver
Posts: 31
|
|
|
Member
Join Date: Apr 2013
Location: Denver
Posts: 31
|
Ok so I found the problem. The hot connector on the alternator was touching the alternator housing and shorted. Should I replace the new alternator? I'm wondering if the electronics on it might be shorted.
|
|
|
Reply With Quote
|
|
09-02-2019, 05:03 PM
|
#8
|
|
Elite Member
|
|
Join Date: Sep 2005
Location: Oakland CA
Age: 36
Posts: 5,063
|
|
|
Elite Member
Join Date: Sep 2005
Location: Oakland CA
Age: 36
Posts: 5,063
|
Quote:
Originally Posted by Superhero
Ok so I found the problem. The hot connector on the alternator was touching the alternator housing and shorted. Should I replace the new alternator? I'm wondering if the electronics on it might be shorted.
|
get another one, possible that the short could of cause some melting in that area. its lifetime warranty right if you got it from autozone or orileys.
while you doing the job again, i would also do the big 3 upgrade, never know if you need some stable power.
__________________
Pioneer DEH-80PRS,Rockford Fosgate T600-2,Hertz ML 1650.3(2 pairs),T400-2,Hertz ML 280.3(2 pairs),T1000-1bdcp,(2)JL Audio 12W6v3, Mechman 240a HO Alternator, Dual Northstar 31m,Borla Dual Exhaust,AFE Magnumforce intake.Enkei WT-4 Michelin Defender LTX 275/55R20. retrofitted S2000 projectors,Philips 85122 White Vision,Morimoto 5Five Ballast.Diode Dynamics SS3 Yellow Fog Sport.2 pairs of Hella Supertones.Full led conversion on interior and exterior.HAWK Talon Rotors and LTS pads F+R,Stoptech stainless steel lines F+R.Bilstein 5100 @0.85, MOOG FJ Springs front,Bilstein B12 36-281824 rear .
|
|
|
Reply With Quote
|
|
09-02-2019, 05:22 PM
|
#9
|
|
Member
|
|
Join Date: Apr 2013
Location: Denver
Posts: 31
|
|
|
Member
Join Date: Apr 2013
Location: Denver
Posts: 31
|
I've already got it back in. Won't know if it's good until I replace the alternator fuse. No one local has it so ordered from Amazon. I did read of similar situations where the alternator was fine. The housing is barely marked and it is on a thick area with a bolt running through. Nothing on the inside there. Hopefully it's ok.
What is the big three upgrade?
|
|
|
Reply With Quote
|
|
09-02-2019, 07:36 PM
|
#10
|
|
Elite Member
|
|
Join Date: Sep 2005
Location: Oakland CA
Age: 36
Posts: 5,063
|
|
|
Elite Member
Join Date: Sep 2005
Location: Oakland CA
Age: 36
Posts: 5,063
|
What is the Big 3 Upgrade - And How to Install it - Mobile Install Guide
theres also youtube videos on how to do it. sonicelectronix has one thats pretty good to watch.
__________________
Pioneer DEH-80PRS,Rockford Fosgate T600-2,Hertz ML 1650.3(2 pairs),T400-2,Hertz ML 280.3(2 pairs),T1000-1bdcp,(2)JL Audio 12W6v3, Mechman 240a HO Alternator, Dual Northstar 31m,Borla Dual Exhaust,AFE Magnumforce intake.Enkei WT-4 Michelin Defender LTX 275/55R20. retrofitted S2000 projectors,Philips 85122 White Vision,Morimoto 5Five Ballast.Diode Dynamics SS3 Yellow Fog Sport.2 pairs of Hella Supertones.Full led conversion on interior and exterior.HAWK Talon Rotors and LTS pads F+R,Stoptech stainless steel lines F+R.Bilstein 5100 @0.85, MOOG FJ Springs front,Bilstein B12 36-281824 rear .
|
|
|
Reply With Quote
|
|
09-02-2019, 07:41 PM
|
#11
|
 |
Member
|
|
Join Date: Apr 2013
Location: Appomattox VA
Posts: 34
Real Name: MIchael
|
|
|
Member
Join Date: Apr 2013
Location: Appomattox VA
Posts: 34
Real Name: MIchael
|
That fuse is near impossible to change without breaking the fuse box. Saddly it dosnt kust pull out.
|
|
|
Reply With Quote
|
| Thread Tools |
|
|
| Display Modes |
Rate This Thread |
 Linear Mode
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is On
|
|
|
|
