02 7.3L - Recommendation for alternator and batteries - Ford Truck Enthusiasts Forums

Go Back  Ford Truck Enthusiasts Forums > Super Duty/Heavy Duty > Excursion - King of SUVs
Reload this Page >

02 7.3L - Recommendation for alternator and batteries

Notices
Excursion - King of SUVs 2000 - 2005 Ford Excursion
Sponsored by:
Sponsored by:

02 7.3L - Recommendation for alternator and batteries

Reply

 
 
 
  #1  
Old 07-14-2018, 05:31 PM
beeper212
beeper212 is offline
Freshman User
Thread Starter
Join Date: Sep 2013
Location: Northern VA
Posts: 26
beeper212 is gaining momentum as a positive member of FTE.
02 7.3L - Recommendation for alternator and batteries

I'm the original owner of a 2002 Excursion 7.3L Diesel. I absolutely love this truck!

For the past couple of months my voltage has been dropping and I've been getting by charging the batteries in the garage.

Took my Ex into the shop and they are telling me that I have a bad alternator and two bad batteries.

What would you recommend as a good replacement / upgrade for my alternator and batteries?

Thanks for the help!

Beeper
 
Reply With Quote
  #2  
Old 07-14-2018, 06:03 PM
pirate4x4_camo's Avatar
pirate4x4_camo
pirate4x4_camo is online now
Postmaster
Join Date: Apr 2011
Location: Northern California
Posts: 4,110
pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.
A great replacement is motorcraft batteries and alternator, seriously they are better then 95% of the aftermarket junk available.

if you really do need an alternator with higher output there are 2 that stand out.
the Lecce Neville unit that you will find in heavy equipment and mission critical applications like ambulances,fire and police vehicles.

https://www.xtremediesel.com/leece-n...-avi160t2002-2

and the Mitsubishi units that your off road race teams seem to gravate towards
https://store.alternatorparts.com/pa...erno12075.aspx

battery wise again the motorcraft are tops without going to a high dollar speciality like an Oddessy . The Wal-mart batteries deserve a nod because they are good quality but mostly because of the no hassle replacement avaialbe nationwide.

All the lead acid batteries on the market are really just various degrees of built quality with the motorcrafts being at the top of the chart.

AGM batteries on the other hand are a better design and Oddessy makes the best quality on the market ( as do others but most are geared towards industrial or Marine )
https://shop.odysseybattery.com/p/65-pc1750t
 
Reply With Quote
  #3  
Old 07-14-2018, 06:23 PM
pirate4x4_camo's Avatar
pirate4x4_camo
pirate4x4_camo is online now
Postmaster
Join Date: Apr 2011
Location: Northern California
Posts: 4,110
pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.
If you need a high output alternator then you are also going to need to upgrade your alternator and battery wiring.
3. Upgrade your alternator wiring.
 
Reply With Quote
  #4  
Old 07-16-2018, 09:16 AM
Studawg's Avatar
Studawg
Studawg is offline
Thread Ender
Join Date: Dec 2010
Location: SC
Posts: 1,232
Studawg is a name known to allStudawg is a name known to allStudawg is a name known to allStudawg is a name known to allStudawg is a name known to allStudawg is a name known to all
My '02 Ex 7.3L 4x4 Limited has 215k and I bought with 99k, 8 years ago. In that 115k miles, Ive gone through 3 alternators. In general, diesels are hard on alternators because they have to charge two batteries, (or so I was told, Im pretty ignorant when it comes to electronicals) The first one was a NAPA, it lasted about 40k miles, then replaced it with an Autozone. That lasted about 40k, and I just replaced it with another AZ. Lifetime warranty though so it was free and I swapped it out in the Autozone parking lot in about 5 minutes. Im not at all mad about it though, considering that is LITERALLY the ONLY thing I have had to replace on this truck in 8 years and 115k miles of ownership. Other than brakes, tires, oil, filters, fuel, coolant/tranny/PS fluid flushes. Love this truck and get compliments and offers to buy it weekly!

I wouldn't mind a higher output alternator, but I dont want the hassle of any sort wiring upgrade.

EDIT: I forgot, the foot of my fuel pickup broke off, I assume, so I can only use the top half of my fuel tank, and I haven't fixed that yet. So thats something outside of normal maintenance that has to be addressed
 

Last edited by Studawg; 07-16-2018 at 09:22 AM. Reason: forgot
Reply With Quote
  #5  
Old 07-16-2018, 11:55 AM
beeper212
beeper212 is offline
Freshman User
Thread Starter
Join Date: Sep 2013
Location: Northern VA
Posts: 26
beeper212 is gaining momentum as a positive member of FTE.
Originally Posted by pirate4x4_camo View Post
If you need a high output alternator then you are also going to need to upgrade your alternator and battery wiring.
3. Upgrade your alternator wiring.
Awesome! Thank you so much and especially for including the wire upgrade kit.

I love my truck as well! 17 years of faithful service!
 
Reply With Quote
  #6  
Old 07-16-2018, 03:15 PM
XS-SUV
XS-SUV is online now
New User
Join Date: Jul 2011
Posts: 19
XS-SUV is starting off with a positive reputation.
Ok, here's my alternator/ battery story;
Bought my 7.3 Y2K-X new, and had to replace the MotorCraft batteries in 2002, with Sam's Club batteries...
And, guess what....Went back to Sam's Club again, and again to replace their batteries under warranty for >>""Free of Charge"" << in 2004, 2007, 2009, 2012, and finally again the last time in 2015....
I anted up, paid the extra money and purchased Sam's club size 65 AGM Batteries for $170/ea
[here]
https://www.samsclub.com/sams/auto-g...ubNAME=VigLink

In 2009, Sams club claimed my alternator wasn't functioning properly so I took their suggestion and purchased this alternator here;
https://alternatorparts.com/6g-serie...lternator.html
Well, 2 more times the batteries went out, under warranty...
NOTE WELL; The alternator I purchased was a "" LARGE FRAME"" size 6G alternator used on the older powerstrokes, and there is a slight modification you have to make...
It's been 9 yrs & 100K/mi. on this alternator & it has performed with no problems..
Suggest you get the 140 Amp, model @ $239.00 so you don't have to do any wiring modifications
 
Reply With Quote
  #7  
Old 07-16-2018, 05:11 PM
pirate4x4_camo's Avatar
pirate4x4_camo
pirate4x4_camo is online now
Postmaster
Join Date: Apr 2011
Location: Northern California
Posts: 4,110
pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.
For sure you need the group 65 batteries to start the 7.3., the draw would kill smaller batteries fairly quick.
Fwiw the motorcrafts have a 5 year warranty. ( 3 year free +2 prorated )
I had one go out at 4 years and the prorated charge was $50 bucks
 
Reply With Quote
  #8  
Old 07-16-2018, 05:50 PM
EMC V10 X's Avatar
EMC V10 X
EMC V10 X is offline
Senior User
Join Date: Oct 2010
Location: Bonita Springs FL
Posts: 269
EMC V10 X is starting off with a positive reputation.
If you have a Rural King around you, they have great deals on Rural king branded AGM batteries. I am pretty sure they are Excide batteries. I replaced mine 4 years ago with the AGM and no issues since. Crap. Knock on wood!
 
Reply With Quote
  #9  
Old 07-16-2018, 08:53 PM
Stewart_H's Avatar
Stewart_H
Stewart_H is offline
The Nekkid Super Mod
Join Date: May 2004
Location: Central Coast of CA
Posts: 27,276
Stewart_H has a superb reputationStewart_H has a superb reputationStewart_H has a superb reputationStewart_H has a superb reputationStewart_H has a superb reputationStewart_H has a superb reputationStewart_H has a superb reputationStewart_H has a superb reputationStewart_H has a superb reputationStewart_H has a superb reputationStewart_H has a superb reputation
Originally Posted by pirate4x4_camo View Post
if you really do need an alternator with higher output there are 2 that stand out.
the Lecce Neville unit that you will find in heavy equipment and mission critical applications like ambulances,fire and police vehicles.
I've purchased from Xtreme Diesel myself in the past and while I wouldn't hesitate to ever buy from them again, for a Leece-Neville unit I'd rather purchase from FICM Repair. Alternators & Alternator Wiring & Starters

Ed at FICMrepair.com is a supporting vendor here at FTE and an active user who has helped others for many years here at FTE.

Stewart
 
Reply With Quote
  #10  
Old 07-16-2018, 09:01 PM
pirate4x4_camo's Avatar
pirate4x4_camo
pirate4x4_camo is online now
Postmaster
Join Date: Apr 2011
Location: Northern California
Posts: 4,110
pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.pirate4x4_camo has a spectacular reputation.
Originally Posted by Stewart_H View Post
I've purchased from Xtreme Diesel myself in the past and while I wouldn't hesitate to ever buy from them again, for a Leece-Neville unit I'd rather purchase from FICM Repair. Alternators & Alternator Wiring & Starters

Ed at FICMrepair.com is a supporting vendor here at FTE and an active user who has helped others for many years here at FTE.

Stewart
how did I not know he had those ? Lolz at me. I even linked to his wiring kits.
 
Reply With Quote
  #11  
Old 07-17-2018, 12:11 AM
Stewart_H's Avatar
Stewart_H
Stewart_H is offline
The Nekkid Super Mod
Join Date: May 2004
Location: Central Coast of CA
Posts: 27,276
Stewart_H has a superb reputationStewart_H has a superb reputationStewart_H has a superb reputationStewart_H has a superb reputationStewart_H has a superb reputationStewart_H has a superb reputationStewart_H has a superb reputationStewart_H has a superb reputationStewart_H has a superb reputationStewart_H has a superb reputationStewart_H has a superb reputation
Originally Posted by pirate4x4_camo View Post
how did I not know he had those ? Lolz at me. I even linked to his wiring kits.


Stewart
 
Reply With Quote
  #12  
Old 07-17-2018, 10:23 AM
mcali2's Avatar
mcali2
mcali2 is offline
Posting Guru
Join Date: Aug 2013
Location: Fallon NV
Posts: 1,552
mcali2 is gaining momentum as a positive member of FTE.mcali2 is gaining momentum as a positive member of FTE.
XS Power batteries. not cheap.
 
Reply With Quote
  #13  
Old 07-17-2018, 04:45 PM
Toynut
Toynut is offline
Freshman User
Join Date: Dec 2014
Posts: 25
Toynut is starting off with a positive reputation.
When my alternator went bad I replaced it with one from 2005 6.0. The 7.3's have a small body alternator and the 6.0's have a large body which helps with cooling and able to get higher output. Electrical is direct plug and play but you have to clock the rear housing which is easy and shim the alternator body up with 2 washers or sand the mount for clearance. Might sound like a lot but you get a factory alternator with higher amps and the more reliable large body alternator.
 
Reply With Quote
  #14  
Old 07-17-2018, 05:38 PM
agsmv1's Avatar
agsmv1
agsmv1 is online now
Posting Guru
Join Date: Feb 2015
Location: Fort Collins, CO
Posts: 1,188
agsmv1 is a splendid one to beholdagsmv1 is a splendid one to beholdagsmv1 is a splendid one to beholdagsmv1 is a splendid one to beholdagsmv1 is a splendid one to beholdagsmv1 is a splendid one to beholdagsmv1 is a splendid one to behold
DB alternator, upgraded my wiring and 2 red tops...Been like that for several years not a single issue. But now that I typed it they will go out tomorrow!!
 
Reply With Quote
  #15  
Old 07-17-2018, 07:26 PM
Big Sky's Avatar
Big Sky
Big Sky is offline
Elder User
Join Date: Sep 2003
Location: Billings, MT
Posts: 725
Big Sky has a good reputation on FTE.Big Sky has a good reputation on FTE.Big Sky has a good reputation on FTE.
Here's my story: I went through about 5 "lifetime warranty" alternators from all of the big stores NAPA, Autozone etc. I got tired of my wife calling needing help. So I said **** on it and forked over the money for a DC Power alternator. Worth every penny. I still have my last reman in a box just in case. I'm running into the same issue with those "lifetime warranty" made in China reman (on my 4th in 4 years) and am about ready to fork the $ for a high end real American made starter. We are in the back country and can't risk it where we live.
 
Reply With Quote

Thread Tools
Search this Thread
Quick Reply: 02 7.3L - Recommendation for alternator and batteries


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.