Cause of Crankshaft failure - Ranger-Forums - The Ultimate Ford Ranger Resource


General Ford Ranger Discussion General discussion of the Ford Ranger that does not fit in any other sub-forum.

Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 09-26-2010
jtfoxman's Avatar
Member
Thread Starter
 
Join Date: Jun 2005
Location: The Poconos
Posts: 891
Cause of Crankshaft failure

I believe I posted something on this when it occurred but a few years ago my crank snapped behind where the pulley attaches to it. When this occurred a few weeks earlier I used that Valvoline MaxLife when I changed the oil. After that happened and I put my "new" motor in i vowed never to use it again.
Now my last oil change I recanted and put the stuff in, normally I use DuraBlend, since my motor is getting old and I use it in my wifes car. Now I'm concerned that the crank is going to snap again. I know it was just a coincidence but if it would happen again i would snap. Now I need some honest opinions. Could the oil have caused the crank to fail the first time?
Reply With Quote
  #2  
Old 09-26-2010
Masteratarms93's Avatar
Member
iTrader: (8)
 
Join Date: Mar 2010
Location: Goose Creek SC
Posts: 4,685
if it busts again.


get a 5.0
Reply With Quote
  #3  
Old 09-26-2010
V8 Level II's Avatar
RF Veteran
iTrader: (4)
 
Join Date: Nov 2004
Location: Michigan
Posts: 7,833
Quote:
Originally Posted by jtfoxman View Post
Could the oil have caused the crank to fail the first time?
No
Reply With Quote
  #4  
Old 09-26-2010
Needforspeed3685's Avatar
Member
 
Join Date: Aug 2005
Location: Lowell, AR
Posts: 1,836
Quote:
Originally Posted by rwenzing View Post
No
Agreed. There is no way oil could cause the crank to fail, especially behind the pulley. I would check the tensioner arm. It's really hard to imagine a tight serpentine belt could snap a pulley off, but that's the only thing that seems logical in my head.
Reply With Quote
  #5  
Old 09-26-2010
Member
 
Join Date: Mar 2007
Location: Upstate,NY
Posts: 2,598
Only thing that comes to mind would be a messed up harmonic balancer.The truck could have been in a wreck or been taken off-road where something hit the balancer causing it to have a slight wobble , which over time caused a stress crack that eventually broke the crank.
Reply With Quote
  #6  
Old 09-26-2010
Member
 
Join Date: Jun 2010
Location: burbank ca
Posts: 58
The chances of you having another broken crank in your life time is one in a thousand.........or more.
Reply With Quote
  #7  
Old 09-27-2010
ranger4.0's Avatar
Member
iTrader: (1)
 
Join Date: Jul 2009
Location: cambridge, ontario
Posts: 3,922
lol no chance
Reply With Quote
  #8  
Old 09-27-2010
Member
 
Join Date: Jun 2007
Location: Killafornia
Posts: 1,523
go buy a lotto ticket and if you win buy a new truck and if you dont, dont worry about it
Reply With Quote
  #9  
Old 09-28-2010
jtfoxman's Avatar
Member
Thread Starter
 
Join Date: Jun 2005
Location: The Poconos
Posts: 891
Thanks everyone. This popped in to my head and i couldn't get rid of it.
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Could ECM disconnect cause failure to start? mr mortis General Technical & Electrical 4 10-18-2010 08:29 AM
crankshaft sprocket removal fearfact 2.3L & 2.5L I4 Tech 1 04-18-2010 05:22 PM
crankshaft seal 01rangerbigfoot 4.0L OHV & SOHC V6 Tech 4 07-26-2007 12:07 AM
Pic of my broken crankshaft jtfoxman 4.0L OHV & SOHC V6 Tech 14 03-17-2007 12:27 AM
Crankshaft is no more CaptainScarlet 2.9L & 3.0L V6 Tech 7 08-19-2006 10:45 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off



All times are GMT -6. The time now is 08:02 PM.


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.