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#1413304 - 03/03/08 12:21 PM Re: Alternator Upgrade Completed [Re: OnebadLSE]
tspa Offline
Climber

Registered: 03/12/04
Posts: 767
Loc: Lehigh County-PA
 Originally Posted By: OnebadLSE
TS-pa,

do you have underdrive pulleys??


Nope.

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#1426538 - 03/18/08 01:54 AM Re: Alternator Upgrade Completed [Re: tspa]
Rusty! Offline
Over the Hill

Registered: 05/20/02
Posts: 2512
Loc: New Mexico, USA
I found a reputable auto electric shop here in Las Cruces. The owner will build me a new alternator with an amp-rating of somewhere above the 130a on my existing faulty unit. 175 would be nice... I have had no problems with other Vatozone alternators on my other vehicles. There doesn't appear to be any fault with the car.
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#1426970 - 03/18/08 05:50 PM Re: Alternator Upgrade Completed [Re: Rusty!]
Rusty! Offline
Over the Hill

Registered: 05/20/02
Posts: 2512
Loc: New Mexico, USA
Results...The local shop found that Vatozone had left a junky rectifier in the "remanufactured" alternator. It cost me $75 out the door, but now I have a new rectifier and a solid 150 amp output. I was just too lazy to screw around taking it apart and repairing it myself. The webiste that sells the 240 amp unit wanted $480 for it. I don't think so.
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#1443505 - 04/06/08 11:30 PM Re: Alternator Upgrade Completed [Re: Da Gr8 Tim]
don Offline
Rookie

Registered: 04/16/06
Posts: 64
 Originally Posted By: Da Gr8 Tim
Excuse my noob-ness questions, but.
- What is the difference between the civi bracket and the CVPI bracket?

- Would it be possible to snag a CVPI alty from the bone yard and just grab the wiring harenss & bracket? I'm assuming you had to get a new wire a new alternator plug on to your existing wiring.

Last Question (sorta related)
- I plan on replacing the serpentine belt soon, with the removal of the alternator, could I get the old belt off and the new belt on without having to loosen the tensioner?


Hey Bud,

The tensioner is easy to loosen, Just use a breaker bar, the tensioner has a square hole in it for the breaker bar. It is easy... I promise.
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#1465240 - 05/03/08 07:13 PM Re: Alternator Upgrade Completed [Re: fast5speed]
Joey Offline
Member

Registered: 04/27/08
Posts: 237
If your car runs fine with the alt in it, I would just stick with that unless you're planning on putting in a bunch of accessories like lights, amplifier, and etc.
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#1473677 - 05/14/08 10:27 PM Re: Alternator Upgrade Completed [Re: Joey]
24inchdubs Offline
Rookie

Registered: 02/10/08
Posts: 77
Loc: Boston MA
To the guy on the first page the 92 alt is totally different.
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#1479509 - 05/21/08 04:48 AM Re: Alternator Upgrade Completed [Re: tspa]
2vmodular Offline

Poobah

Registered: 04/11/01
Posts: 6289
Loc: New England
the civilian engine computers for our cars have a really low commanded idle speed (often 500-600 RPM). you might try boosting idle rpm up to somewhere in the 800 - 1000 rpm to increase charging ability.

also look at what pulley pulley you have on the alternator. a smaller pulley makes the alternator spin faster per given crankshaft rotation. but the smaller pulley will also slip more during big crankshaft rotation speed transistions and also more when driving in wet weather.

 Originally Posted By: tspa
When I'm sitting at an intersection, obviously foot on brake & turn signal on, my AC fan speeds up & slows down with each blink of the turn signal. Would changing to a higher rated alternator solve this problem?
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#1479510 - 05/21/08 04:49 AM Re: Alternator Upgrade Completed [Re: fast5speed]
2vmodular Offline

Poobah

Registered: 04/11/01
Posts: 6289
Loc: New England
do you have the 6 groove or 7 groove accessory drive system on your 1992 crownvic?

 Originally Posted By: fast5speed
Speaking of alt swaps...can a 2000 CVPI alt be installed in a 92 CV without modification? If mods are needed...what would they be? I have a 2000 CVPI parts car with working alt. The 92 CV's alt is going abd needs to be changed soon. Thanks.
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#1479512 - 05/21/08 04:55 AM Re: Alternator Upgrade Completed [Re: toofa]
2vmodular Offline

Poobah

Registered: 04/11/01
Posts: 6289
Loc: New England
the alternators in the 2002 & earlier crown vics use a conventional voltage sense regulator to control alternator charging. the rest of your crown vic's powertrain management system effectively does not know which alternator model you have installed in your car.

the alternators in 2003 & later crown vics are pcm controlled. the pcm communicates with the alternator regulator via a databus. and your pcm calibration must be compatible with your particular alternator model.

 Originally Posted By: toofa
could it be possibkle to add the new 07 200 amp alternators on my 03 cvpi? wihtout to much modifacation ?
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#1479514 - 05/21/08 05:04 AM Re: Alternator Upgrade Completed [Re: Bitumen_Bullet]
2vmodular Offline

Poobah

Registered: 04/11/01
Posts: 6289
Loc: New England
the alternator support bracket on the 1998 & later crown vics appears to be a factory installed crash bracket to improve the integrity of the passenger compartment during a frontal collision.

starting in 1998, a crash bracket of similar thickness was also installed on the rear of the engine to help prevent the fuel rail from banging against the firewall and wiper cowl during a frontal collision.

on the 1997 & earlier crownvics, the bracket near the alternator supports the spark plug wires. but 1998+ crown vics, use a coil on plug ignition system and don't have any high voltage spark plug wires to support. so the bracket has been redesigned to help prevent passenger injury during a high energy frontal collision.

 Originally Posted By: Bitumen_Bullet
I downgraded the Alternator to a Civy on a 1994 P71, same idea but even easier as no support bracket to worry about.
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#1498872 - 06/17/08 09:27 AM Re: Alternator Upgrade Completed [Re: 2vmodular]
Burmis Offline
Rookie

Registered: 04/26/07
Posts: 80
Loc: North Eastern Illinois
So as were talking alternators, my 2000 mercury grand marquis is barely starting, like dead battery, but have a new optima in it. I drove it to work today (30 Mins) and when I went to restart it at the gas station, it didn't seem like the battery was charging. So, that would mean my alternator is not working? but how am I able to drive? Any help would be appreciated!

Thanks, Bryan
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#1642693 - 12/19/08 03:13 PM Re: Alternator Upgrade Completed [Re: Burmis]
ford05 Offline
Poobah

Registered: 07/24/08
Posts: 5842
Loc: New Jersey
Ok, i just did this upgrade on my car today. I needed to do it cause of my stereo system. I did notice one thing though. The factory harness on my car(2000 crown vic lx) only has 2 wires and the aftermarket pigtail comes with 3 wires. Do we use all 3 wires or just two? I only used the two outter wires. any pics of which wire goes connected where?
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#1898550 - 11/02/09 12:32 AM Re: Alternator Upgrade Completed [Re: 2vmodular]
Loaded98LS Offline

Over the Hill

Registered: 09/05/01
Posts: 4094
Loc: Mass
well, at 125K+ the alt light has started flickering (digital dash, no gauge). I actually pulled this thread up in a google search as I was trying to find info on an alternator I just got from an Ebay seller. Looks like I have a 'take off' (barely used) American Armature 240AMP alternator. I only expected an almost new OEM 135AMP alt, but was shocked to see this might be the 'big daddy' that costs hundreds of bucks when I looked over what came out of the box! LOL... This will be nice, as my underdrives will now be driving a beast of an alternator! If this works out, I got if for about $115 shipped, a heck of a deal I was not even expecting! Got to try it out tomorrow... Thanks to 2V for helping pick it out (we both had no idea it was not stock) off of eBay...

And yes, if anyone could bend a car rim with their bare hands, that would be 2Vmodular.


Edited by Loaded98LS (11/02/09 12:34 AM)
Edit Reason: typo
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#2247283 - 02/26/11 09:29 PM Re: Alternator Upgrade Completed [Re: 2vmodular]
j5689 Offline
Climber

Registered: 11/16/10
Posts: 632
Loc: Bowie, Maryland, U.S.
Originally Posted By: 2vmodular
the alternator support bracket on the 1998 & later crown vics appears to be a factory installed crash bracket to improve the integrity of the passenger compartment during a frontal collision.

starting in 1998, a crash bracket of similar thickness was also installed on the rear of the engine to help prevent the fuel rail from banging against the firewall and wiper cowl during a frontal collision.

on the 1997 & earlier crownvics, the bracket near the alternator supports the spark plug wires. but 1998+ crown vics, use a coil on plug ignition system and don't have any high voltage spark plug wires to support. so the bracket has been redesigned to help prevent passenger injury during a high energy frontal collision.

Originally Posted By: Bitumen_Bullet
I downgraded the Alternator to a Civy on a 1994 P71, same idea but even easier as no support bracket to worry about.


Can either of these crash brackets be retrofitted to a 97 or older? Not that I have one, I'm just wondering because that is a really cool improvement no matter how well it actually works.

And about the alternator: Does the pigtail have to be soldered on or can it be crimped? I don't know how to solder and I figure I wouldn't be able to do it well with my crappy fine motor skills.
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#2335825 - 07/19/11 07:05 PM Re: Alternator Upgrade Completed [Re: 2vmodular]
BlaineB Offline
Over the Hill

Registered: 09/21/06
Posts: 4379
Loc: Indiana
I'd solder, that would provide a lesser resistance than using a crimp connection.

Up to 2002 only the two outer wires were used on the regulator plug. That plug probably has 3 wires because it is also compatible with the 2003 alternator, which used 3 wires because starting in 2003, the voltage regulator was removed from inside of the alternator and placed inside of the engine computer.

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