alternator pulley keeps coming off. WTF??? - Ford Powerstroke Diesel Forum
User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of 4 Old 02-08-2010, 04:08 PM Thread Starter
Compression Ignition Addict
 
geabis's Avatar
 
Join Date: Jul 2009
Posts: 231
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
alternator pulley keeps coming off. WTF???

anyone else have dual alternators with a problem of the aux alternator pulley loosening and coming off to leave you stranded with out power steering or brakes. i have to take it in for the second time in 3 months for the problem. first time it happened 1k miles after tuning it this time it happened about 100miles within tuning it. could it have something to due with the spartan? too much throttle response or engine decelerating too quick?

also does anyone know if that belt operates the water pump bc i can drive without steering or brakes, but i dont want to over heat the motor

2009 F 450 King Ranch, factory 2009 nav upgrade from 6 disc changer,
5" downpipe back FloPro Stainless exhaust with aero 5050 muffler and 6" polished tip,
Spartan 210 tune,
Spartan TCM,
Suncoast direct solenoid
geabis is offline  
Sponsored Links
Advertisement
 
post #2 of 4 Old 02-10-2010, 03:17 PM
Powerstroke Techie

 
Join Date: Oct 2009
Posts: 1,682
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 5 Times in 5 Posts
Feedback Score: 0 reviews
The accessory belt that gets thrown off also drives the water pump.

Ford Senior Diesel Technician
2008 F-350 4x4 Off Road 6.4 Powerstroke Diesel
There are strange things done 'neath the midnight sun by the men who moil for gold.
The arctic trails have their secret tales that would make your blood run cold.
Big Angry Hillbilly is offline  
post #3 of 4 Old 02-15-2010, 02:51 PM Thread Starter
Compression Ignition Addict
 
geabis's Avatar
 
Join Date: Jul 2009
Posts: 231
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by Big Angry Hillbilly View Post
The accessory belt that gets thrown off also drives the water pump.
thanks.

still trying to figure out if this is unique to me or if other people are having the same problem. the design of the primary alternator and secondary alternator pulleys are different the secondary looks as if its a threaded pulley threaded on to the shaft and the primary has a nut holding it.

this has happened twice in a row. the first time happened around 1k miles of me tuning the truck aprox 5k total on the truck and the second happened about 100 miles after i tuned it but aprox 1k miles after it was fixed. i know there is a considerable difference in throttle response on a tuned truck vs stock and just wondering if the decel of the throttle response could loosen the pulley?

hell I'd tack weld the damn thing if i knew for sure it was going to happen again. really i don't think i would ever replace the pulley with out putting an alternator on it. so far its been a warranty replacement but its getting to be an inconvenience not having a truck fro a week for a damn alternator

2009 F 450 King Ranch, factory 2009 nav upgrade from 6 disc changer,
5" downpipe back FloPro Stainless exhaust with aero 5050 muffler and 6" polished tip,
Spartan 210 tune,
Spartan TCM,
Suncoast direct solenoid
geabis is offline  
post #4 of 4 Old 04-26-2012, 11:13 AM
Compression Ignition Addict
 
Beatngu's Avatar
 
Join Date: Oct 2007
Location: Westcentral NY
Posts: 415
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 1 reviews
17k on my truck and my pulley just came off my alternator , Ford says you can't buy just the pulley ?
anyone have more on this? I don't want to buy a new alternator just for the pulley

2016 AG GT350
2013 Fresh150
2008 F350 Lariat Stroker
2005 F250 Lariat Stroker

2004 Mach1 6 spd Black on black
DSS 5.0L stroker
Comp cams w/ FRPP ported heads
twin Turbonetics
13psi 749 hp / 620 ft. lbs. @ 16*
E85 numbers to follow

old Kenne Belle setup at 16 psi
and so on......
600 hp / 585 ft. lbs.
Beatngu is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome