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Jan 26, 2014 | 06:20 PM

#16

Mr.Nobody

Elder User

Joined: Apr 2013

Posts: 941

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From: Bothell, WA

Low voltage was causing this?

Jan 26, 2014 | 06:29 PM

#17

BLADE35

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Joined: Apr 2010

Posts: 19,055

Likes: 235

From: Saratoga Springs,UT

When we checked the alternator it peaked out at 12.2V with my DVM (Definatly BAD Alternator) at the Alt The FICm Remained in a Good Range But was Stressed @ 46.5 -48 Volts kinda Bouncing around between thos numbers while it Idled

And the Battery Light Began to Flicker toward the End

SO Im confident its a Low Power problem has the Classic symtoms

You guys have any Good Ideas where to get a Decent Alt for a Reasonable price

Jan 26, 2014 | 06:32 PM

#18

9228.bobcat

Cargo Master

Joined: Oct 2009

Posts: 2,283

Likes: 0

From: missouri

Quote:

Originally Posted by BLADE35

When we checked the alternator it peaked out at 12.2V with my DVM at the Alt The FICm Remained in a Good Range But was Stressed @ 46.5 Volts

And the Battery Light Began to Flicker toward the End

SO Im confident its a Low Power problem has the Classic symtoms

You guys have any Good Ideas where to get a Decent Alt for a Reasonable price

I have used oem thats good.

Jan 26, 2014 | 06:48 PM

#19

BLADE35

Hotshot

Joined: Apr 2010

Posts: 19,055

Likes: 235

From: Saratoga Springs,UT

Hey Carl did that EX have a stereo system in it?? any After market Electronical Upgrades???

Or was it Stock along those Lines???

I forgot to ask??

Jan 26, 2014 | 06:58 PM

#20

Bullitt390

Certified Thread Hijacker

Joined: Aug 2001

Posts: 14,441

Likes: 59

The easiest and one of the cheapest upgrades is the 140 amp 6G from the dual alternator/ snow plow prep trucks.

Another option with slightly more output at idle is the 130 amp large case 3G from the 94-97 7.3 engines. This option requires a conversion harness.

http://www.ebay.com/itm/Alternator-Conversion-Harness-Connector-Lead-Adapter-Ford-6G-TO-3G-w-Stator-lead-/200976771001?pt=Motors_Car_Truck_Parts_Accessories&hash=item2ecb2627b9&vxp=mtr
To boost the output a little more at idle many swap to this 58 mm pulley:

http://www.ebay.com/itm/OVERDRIVE-8-GROOVE-PULLEY-Gain-output-idle-in-some-apps-FORD-ALTERNATOR-6g-3g-/170910011638?pt=Motors_Car_Truck_Parts_Accessories&hash=item27cb07d0f6&vxp=mtr
There are these 2 options as well:

160 Amp Visteon from the VT275

New Alternator International CF 500 CF 600 VT275CI 5C40AB 5C40AC GL 683 GL683 | eBay

230 Amp Prestolite:

New Alternator 2007 2010 Ford LCF 450 LCF 550 6E7Z 10346 C A160202 AVI160T2002 | eBay

There is always DC Power, Singer and Mechman as well.

Jan 26, 2014 | 07:03 PM

#21

BIG ATS

Thread Starter

Senior User

Joined: Dec 2007

Posts: 100

Likes: 0

stock

Quote:

Originally Posted by BLADE35

Hey Carl did that EX have a stereo system in it?? any After market Electronical Upgrades???

Or was it Stock along those Lines???

I forgot to ask??

stock w factory dvd player

Jan 26, 2014 | 07:20 PM

#22

BLADE35

Hotshot

Joined: Apr 2010

Posts: 19,055

Likes: 235

From: Saratoga Springs,UT

Well FORD took his money and did a Fuel System Flush when he Needed a New ALternator

So DC is out

Are those others Cheaper Josh?? the Singer or Mecham???

Carl had another Vehicle to drive so He has Time to Find something that will Power the truck Better then the 110amp OEM that we know is underpowered when we start doing the Math of Supply vs Demand vs RPM

Thanks

Jan 26, 2014 | 09:16 PM

#23

78fordman

Cargo Master

Joined: Oct 2003

Posts: 2,833

Likes: 4

From: Jefferson, Iowa

Here's an interesting ebay find
http://www.ebay.com/itm/250AMP-HIGH-OUTPUT-ALTERNATOR-FORD-E-F-SERIES-E450-F450-EXCURSION-6-0L-2003-2007-/281226124330?pt=Motors_Car_Truck_Parts_Accessories&hash=item417a621c2a&vxp=mtr250 amp for $170, doesn't seem too bad.

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Jan 26, 2014 | 09:34 PM

#24

Bullitt390

Certified Thread Hijacker

Joined: Aug 2001

Posts: 14,441

Likes: 59

Quote:

Originally Posted by BLADE35

Mechman and Singer are cheaper than DC.

The best option for warranty is the 3G/6G with nationwide warranty.

Second is the Visteon ornPrestolite available at International and heavy truck dealers.

Then the internet providers; DC, Mechman or Singer.

I know a Singer 275 amp is $489 and the 240 amp is $409.

Jan 26, 2014 | 10:10 PM

#25

Yahiko

Fleet Owner

Joined: Apr 2012

Posts: 27,307

Likes: 549

From: Spanaway

Quote:

Originally Posted by VQT

Tried to reps you Benny, but apparently I am in reps jail

Quote:

Originally Posted by Green96

Don't worry, I got him.

So did I.

On a place for an alt. I picked up the top 140 for the dual alt system
and it's doing a good job. It got the smaller pulley a few weeks after I
put it in and now it really pumps out the juice.

Sean

Jan 27, 2014 | 03:20 PM

#26

BIG ATS

Thread Starter

Senior User

Joined: Dec 2007

Posts: 100

Likes: 0

im going to blow it up changed alt still same volts 11.72 im done done its driving me nuts its still bogging down

Jan 27, 2014 | 03:37 PM

#27

mustang_309

Logistics Pro

Joined: Dec 2004

Posts: 4,138

Likes: 7

From: South Weber, Utah

Quote:

Originally Posted by BIG ATS

im going to blow it up changed alt still same volts 11.72 im done done its driving me nuts its still bogging down

Did you load test the batteries separately ( completely disconnected from one another? ) Bad batteries will kill an alternator.

Jan 27, 2014 | 03:41 PM

#28

BIG ATS

Thread Starter

Senior User

Joined: Dec 2007

Posts: 100

Likes: 0

yes

Quote:

Originally Posted by mustang_309

Did you load test the batteries separately ( completely disconnected from one another? ) Bad batteries will kill an alternator.

i checked both batteries

Jan 27, 2014 | 03:59 PM

#29

npccpartsman

Hotshot

Joined: Dec 2003

Posts: 15,368

Likes: 121

From: Stuttgart, Ar

Were yall checking the voltage at the alternator or at the batteries? My thoughts are that the fuse is blown in the wire from the alternator to the battery OR the plug in the back of the alternator has a bad/broken wire, but that usually turns on the battery light. Might also be a Vref or an I-circuit problem.