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Hi i push my alt ahead to put a new belt on and shorted the thing out , put all new wire and fuseable links on ,it,s now starts but the factory lights in the dash and the alt gauge in the console doesn,t work what going on with this thank you Tim

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Hello: Don't know what year/model. You may have shorted the alternator out. With the engine off, take a dc volt meter and check voltage at battery, the start engine check voltage at battery again if it is the same or a little less than the first reading the alternator is not working

Posted on May 20, 2011

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1 Answer

Why doesn't new alternator charge battery?


Some cars have a fuse for the alternator instead of link. The belt is on correct and all connections are tight? What's voltage while running? Year model?

Mar 10, 2016 | Cars & Trucks

1 Answer

Still won't crank,battery & alternator shows 12.66 amps. Is there another fuse box that could kill power?


Yes there called fuseable lines .Resistence wire like a fuse .
Olny is on large AMP drawing CKTS starters alts soleiods most times are part of the positive battery cable connection but can be replaced in sections of new wire after testing for resistance . Keep in mind use resistance wire to replace the link or you could do lots of damage if it shorts again its their for a reason.

Apr 11, 2015 | 1993 Chevrolet S-10

1 Answer

Battery light alternator


The Charge lamp comes on with the Alternator fails to keep battery charge going. (lots of way to fail, and ALT Is 100% good) it's a system. each part of it must be good, end to end.
so...
i put my voltmeter across battery, i start car, i see 13.3 to 15vdc, alt is good.
no? , i see now, 12.2v. ALt is dead, (i didnt say bad) and battery is sightly discharged, 12.6v is charged. (key off, rested voltage)
This 12v tells me the ALT is shut down. only why is the question.

how can any charge system fail,
bad battery tops the list here, they LOVE to fail.
1: belt slips.
2: belt missing
3: bad alt.
4: bad wires to ALT . (corrosion on any wire or lug)
5: fuses blown , any listed below.:
your alt is not an ECU controlled, alt ,its 100% self contained

did you ever remove the ALT and blow the 100 amp fuseable link
the first step of any alt pul, is the pull the NEG, battery lug or BOOM.

im logged in to alldata.com so can you.

and what do i see.
a 5 wire ALT. one is the frame ground, so it must not be rusty or..... it fails. frame to engine block. no rust here.

wire L , yellow.goes to dash LEDs (alt failure idiot lamps) (this works)
wire. S white goes to ALT 5a fuse, is it blown?
wire :B B/G color, goes to the 100 amp link fuse. (blown>?)
wire IG Red-white, goes to a fuse marked 10A gauge.

i think the IG wire is the voltage sense wire.
no sense, no charge. I think the whole I/P dash cluster goes dead when this fuse blows.

The S wire is the boot strap voltage sense, it wakes up the regulator .
if open , the reg stays asleep, as does ALT.
Alternators can not self start, the regulator has boot strap device
that cures that. called self excitation. so this wire is critical.
All wires except the L wire is critical. in this case.

the B wire is the big wire, it charges the battery . 50amps or more..

any of the 5 paths open , kills the ALT dead.
The REG inside the ALT can also shut it down.
eg: battery bad, with huge cell resistances. total.
eg: overvoltge for any reasons. including attempts top run car with no battery, (dont ask)
eg: over current (battery cells 1 to 6 shorted) or 25 KC lamps added.
eg: over temperature shut down.

that is about it.







Dec 31, 2013 | 2003 Toyota Matrix

1 Answer

Blowing fuseable links from starter to alt, (well one) the gage is smaller then the OEM, however would a bad starter cause this fuseable link to fail, as the altenater is brand new


If this link runs from the alternator to the starter then i would say it likely but i belive the connection is to recarge the battery, the link that runs from the alt to starter connects to starter with another cable that runs to battery, so this link is used to charge the battery, heres a wiring diagram to show you. i would say its morelikely that the problem may be a bad alternator or the wiring from alt to starter is shorting. follow the wire (fuseable link) from alternator to starter and check it for shorting onto something, if nothing found then iwould say its the alternator or starter. to make sure which is the problem, when the link pops can you start the car, will starter spin over the engine if the answer is yes then replace the starter but if the starter doesnt spin engine with blown link then replace the starter, here are the wiring diagram to help.johnjohn2_148.gifjohnjohn2_149.gif

Aug 21, 2011 | 1999 Saturn SL

1 Answer

There are two wires coming out of a fuse box under the hood, one to the battery one to the alternator,the one to the alt has a fuse link in it and from the fuse link to the box someone had spliced the wire...


There should be a tag or marking for the amperage on the fuseable link, this should be rated lower [ say the original wire is 8 gage, the fuseable link should be a lighter, like 10 gage ] then the wire it protects and should fail first. Is the spliced wire smaller then the Fuse link?, If so then you should replace the wire with the same size as the orignial one from the factory.
NOTE: Fuseable links have a isulation that's fire resistant, common wire shouldn't be used in this situation as there's a fire danger.

Apr 22, 2011 | 2001 Oldsmobile Intrigue

1 Answer

I have a 2001 windstar van that died last week.. the mechanic put it on machine and said it was the battery. so tues i went to start it and it was dead again. they said it didn't show alternator killing it...


check fuseable links A & B large 12 gauge wire gray in color
check for 12V at the large yellow/white wire behind the alt.
check the 10A fuse #13 at the fuse box (eng.comp.)
check for 12V alt. harness small orange/blue wire
if every checks out replace alt.

Sep 12, 2010 | 2001 Ford Windstar

1 Answer

Installed a new alt- not getting any power to the battery,where does the cable go from the alt? where is the voltage regulator?


The "Batt" wire probably goes to the starter solenoid or starter relay. The wire is most likely corroded off or it's making a poor connection. Some vehicle route the power directly to the battery, look for a fuseable link in the wire. Use a test light too see if you have power on both sides of the fuseable link. There should be power at the "Batt" terminal of the Alt at all times, if not start tracing the wire back to the battery. The voltage regulator is built into the Alt. Hopefully this helps.

Nov 18, 2009 | 1991 Dodge Dakota

1 Answer

What dors the fusible lnk that feeds the pink & red wires feed?


Fusible link insures that a short from alt or starter or which ever circuit it is connected to will not cause car to catch on fire. Direct short in circuit or component supplied by that particular fuseable link.

Jun 16, 2009 | 1987 Dodge Dakota

2 Answers

1988 chevy suburban charging system problem alternator wont charge new alternator new ignition switch good battery good belt removed old alarm system removed and replaced fusible links no shorts in system...


First check alt At The Back of Alt Big Red Wire Were hooks to Post (stud) Do you have voltage ?? How Much??
What Voltage do you have at same Place with Engine Running ??
Now At wires Were they plug into Alt ,Top. Wires in White Plastic Clip, Do You Have Powe With Key On ?? How Much Voltage??
Jump across the 2 in the clip (with Engine Running)ONLY TEMPORARY!! Do You Have Voltage at Battery ?? How Much??
If Over 13volts With Clip On (Jumped) You Need A Internal Voltage Regulator ..
Is Batt Light On on Dash ??? Theres A Lot Of Testing You Can Do !!! And I will Need More Infomation to Keep Going ... These are just some Possible Problems No Way In Depth ...
Could Be a Number of things Or May be Just as Simple As a Blown Fuse, Dirty Batt Cables ETC etc etc I Hope It Puts You On The Right track !!!!!!!!!!

Dec 02, 2008 | 1988 Chevrolet Suburban

1 Answer

Need to find fuseable link for the alternator,my new one will not charge thinking either link or broken wire.can youhelp me.had the new alt checked out it test good;i own a 1984 nissan p/u


the fuseable link is at the battery + terminal. just pull on the soft rubbery type wires to see if it streaches if it does its u/s you can bare the wires and re twist them to get you out of troble for a short time....

Jul 16, 2008 | 1983 Nissan Pickup

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