Help me troubleshoot this. - Ranger-Forums - The Ultimate Ford Ranger Resource


8-Cylinder Tech If you are one of the few with a V8 engine in your Ranger, or if you dream of a Ranger with a V8 engine, this is the sub-forum for you.

Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 02-19-2012
Vonhanson's Avatar
Member
Thread Starter
iTrader: (5)
 
Join Date: Sep 2009
Location: Glencoe, Minnesota
Posts: 1,609
Help me troubleshoot this.

I think its going to be really hard for me to explain but i'll try my best.

It really sounds like a bearing in one of the pullies is going out. but it ONLY happens at really high throttle and i can't hear anything lower.

it just sounds like its grinding kinda high pitched, then once i let off the gas, it stops after a second.

i'd say at least 85% throttle or higher it happens, its never happened below that.

Any ideas?

i'd try to get a video, but i think my exhaust would cover it up since i only have my cell phone to take it with.
Reply With Quote
  #2  
Old 02-20-2012
Member
 
Join Date: Mar 2007
Location: Upstate,NY
Posts: 2,598
Are you running an aftermarket fan with larger/more blades than the original ?
Too large of a fan and /or any obstruction to the incoming airflow could make the fan stall at high speeds.
This would cause the belt to slip and sound like a high pitched bearing failure.
For a short time , remove the fan belt and see if the noise goes away.
Reply With Quote
  #3  
Old 02-20-2012
Vonhanson's Avatar
Member
Thread Starter
iTrader: (5)
 
Join Date: Sep 2009
Location: Glencoe, Minnesota
Posts: 1,609
Quote:
Originally Posted by OTRtech View Post
Are you running an aftermarket fan with larger/more blades than the original ?
Too large of a fan and /or any obstruction to the incoming airflow could make the fan stall at high speeds.
This would cause the belt to slip and sound like a high pitched bearing failure.
For a short time , remove the fan belt and see if the noise goes away.
I'm running the stock 5.0 fan but the shroud is a 3.0 that i made to fit. that could be it, maybe i'll call around and try to find a stock 5.0 shroud.

The only time i've been able to reproduce the sound is when i'm flooring it and i'm at least 40 mph or higher.
Reply With Quote
  #4  
Old 02-20-2012
Member
 
Join Date: Mar 2007
Location: Upstate,NY
Posts: 2,598
With the engine cold , you should be able to run it for five or so minute without the belt.
That will narrow down if the problem is internal or one of the driven accessories.
Reply With Quote
  #5  
Old 02-20-2012
Vonhanson's Avatar
Member
Thread Starter
iTrader: (5)
 
Join Date: Sep 2009
Location: Glencoe, Minnesota
Posts: 1,609
idk if it would do it when the motor is cold.

plus i'd REALLY not like to floor it without the truck up to temp.
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Help me troubleshoot my ABS!!! LastStarfighter General Technical & Electrical 25 09-27-2015 12:22 AM
Help Troubleshoot AC dan1326 General Ford Ranger Discussion 3 08-06-2015 07:23 AM
how do i troubleshoot carburetor backfire, exaust backfire, and acceleration issues corey1991 SOHC - 2.3L & 2.5L Lima Engines 2 10-15-2010 05:26 PM
Help Help Help Gear Indicator Stuck BananaEdge General Technical & Electrical 5 06-16-2005 12:05 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 06:54 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.