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Old 09-18-2005, 08:06   #1 (permalink)
Mike30038
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how do u change alternator in a 1999 mustan

any body please explain how to change alternator in a frod mustang 99, and
how hard it is, and what is the sign of bad alternator. and is it doable
by weekend not very experienced mechanic.

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Old 09-18-2005, 09:01   #2 (permalink)
WindsorFox[SS]
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Re: how do u change alternator in a 1999 mustan

Mike30038 wrote:
> any body please explain how to change alternator in a frod mustang 99, and
> how hard it is, and what is the sign of bad alternator. and is it doable
> by weekend not very experienced mechanic.
>


It depends on how mechanically inclined you are. I took one off of
a 95 in a junkyard in about 8 minutes. It went back on my 89 in 25, but
I had to change the terminals to fit the new alt.

--

"Gullible is a misdemeanor - stupid is a felony...
clueless gets you committed..." - JG
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Old 09-18-2005, 09:01   #3 (permalink)
bradtx
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Re: how do u change alternator in a 1999 mustan

Mike, Symptoms are dimming lights at night and battery gauge dropping
while the engine's running from it's normal position.

With a voltmeter check across to + and - terminals of the battery for
14 VDC, or slightly more with the engine ideling, accessories off. 12
VDC or less is unacceptable. Raise engine speed to ~ 2000 RPM and
re-check voltage, if still less than 14 VDC replace alt. If voltage is
correct, replace voltage regulator.
Check electrolite level in battery, if not a dry cell...low mtce., not
NO mtce.

Replacement is simply removal of the battery cables, belt, four bolts
and the connector and then reverse the procedure using correctly sized
hand tools. Should take less than an hour overall.

bradtx

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Old 09-18-2005, 09:01   #4 (permalink)
Dan
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Re: how do u change alternator in a 1999 mustan

Alternator on any of the Mustang motors in '99 is pretty easy. The unit
sits right up top-front on the motor. Hand tools only plus something
with a half inch square drive (ratchet) to operate the belt tensioner.
Check the belt while your at it since you have to handle it anyway.

A generator/alternator that is degrading tends to cause the electrical
system to behave weird (lights dimming significantly, lights
flickering, etc.). The most common symptom of a bad one is that the
battery loses its charge. There are battery/alternator testers that can
check it in the car although they are not 100 percent accurate.

Dan
2003 Cobra convertible
With some stuff and things

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Old 09-18-2005, 16:01   #5 (permalink)
RT
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Re: how do u change alternator in a 1999 mustan

On Sun, 18 Sep 2005 10:06:28 -0400, "Mike30038"
<mikealemu1@wmconnect.com> wrote:

>any body please explain how to change alternator in a frod mustang 99, and
>how hard it is, and what is the sign of bad alternator. and is it doable
>by weekend not very experienced mechanic.


A lot of shops will test it for you for free and will be able to tell.

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Old 09-20-2005, 19:01   #6 (permalink)
Mike30038
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Re: how do u change alternator in a 1999 mustan

where is the belt tensioner for Ford Mustang 99 when you change the
alternator...is it on the top big pulley and if do u turn it clock wise
or? my email address is Mikealemu1@wmconnect.com

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Old 09-20-2005, 21:02   #7 (permalink)
bradtx
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Re: how do u change alternator in a 1999 mustan

Mike, No offense, but take it to a mechanic.

bradtx

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Old 09-21-2005, 18:01   #8 (permalink)
WindsorFox[SS]
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Re: how do u change alternator in a 1999 mustan

Mike30038 wrote:
> where is the belt tensioner for Ford Mustang 99 when you change the
> alternator...is it on the top big pulley and if do u turn it clock wise
> or? my email address is Mikealemu1@wmconnect.com
>


I agree with Brad. Not intentionally trying to be an asshole, (it
comes naturally) but if you can't pick out the tensioner without someone
pointing it out, you need to get someone to do it or at least have
someone with you that can show you.

--

"Gullible is a misdemeanor - stupid is a felony...
clueless gets you committed..." - JG
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