Question about UDPs

S

SaleenSHO

New Member

Mar 31, 2005

41

0

0

Findlay, OH

Oct 31, 2005

#1

• Oct 31, 2005

• #1

I just bought another 5.0 notch today. Its black, 5sp, and has 100kmiles on it. It had a slew of mods on it including Under Drive Pulleys. I have never had them on a car before and wanted to know if its normal for my "AMP" light in the center of the console to constantly be on. Is it doing this b.c the pulleys are slowing the alternator down so much or what? Any help would be appreciated! Also, how much horsepower is my stang gaining by having them, and is it worth it to leave them on? Or should i get rid of them?

 

bubba-dough

Active Member

Dec 28, 2004

1,044

2

38

Indiana

Oct 31, 2005

#2

• Oct 31, 2005

• #2

Get a 3G alternator. The stock ones are poop.

 

65ShelbyClone

Founding Member

Sep 9, 2000

4,675

38

119

Antelope Valley, SoCal

Oct 31, 2005

#3

• Oct 31, 2005

• #3

SaleenSHO said:

I have never had them on a car before and wanted to know if its normal for my "AMP" light in the center of the console to constantly be on. Is it doing this b.c the pulleys are slowing the alternator down so much or what?

Click to expand...

If there is no problem with the alternator itself, then thr pullies are the most likely culprit. The factory Fox3 alternators arent that powerful and only put out about 80A at peak rpm and spinning them slower makes it worse.

 

S

SaleenSHO

New Member

Mar 31, 2005

41

0

0

Findlay, OH

Oct 31, 2005

#4

• Oct 31, 2005

• #4

How much are the 3g alternators?

 

srothfuss

Last night I stabbed the same guy 7 times in a row

Oct 17, 2004

1,796

3

0

Woodward Ave.

Oct 31, 2005

#5

• Oct 31, 2005

• #5

There are many sites to detail the 3G upgrade. It's probably best to search for posts the JRichker replied to. He has all the links and details to get the job done correctly. I'll see if I can find one for you...

http://forums.stangnet.com/showthread.php?t=590375

Or

http://forums.stangnet.com/showthread.php?t=587370

Or

http://forums.stangnet.com/showthread.php?t=589664&highlight=upgrade

 

tunedin302

I AM the law!!!

Jul 29, 2004

1,251

2

36

Pennsylvania

Oct 31, 2005

#6

• Oct 31, 2005

• #6

First, I would pull off the underdrive pulleys. IMO, they are total crap and don't give enough power to be worth it. If the AMP light still comes on after you make a pulley swap then look to the alternator/voltage regulator/battery.