ac compressor help needed - Ranger-Forums - The Ultimate Ford Ranger Resource


4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 11-13-2007
exploder01's Avatar
Member
Thread Starter
 
Join Date: Aug 2007
Location: Valois, N.Y.
Posts: 143
ac compressor help needed

recently my ac compressor started making a terrible squeaking noise when the engine is above idle. at idle its quite as can be but as soon as i get in the gas a little it starts to squeal . then when i hit around fourth gear and the truck downshifts the noise goes away. is my compressor shot. it stiill works perfectly its just noisy and annoying. help.
Reply With Quote
  #2  
Old 11-13-2007
Blhde's Avatar
Member
 
Join Date: Oct 2005
Location: Northern IL
Posts: 2,804
Is it a belt slipping kind of noise or metal on metal kind of noise.
Reply With Quote
  #3  
Old 11-14-2007
exploder01's Avatar
Member
Thread Starter
 
Join Date: Aug 2007
Location: Valois, N.Y.
Posts: 143
its a little bit of both. on cold mornings when i first start the truck it sounds like a high pitched chirping noise. I've popped the hood and you can tell its coming from the ac compressor. The same thing happens when it rains. After a few minutes it goes away. If I really get into the throttle then it sounds like the belt is slipping. Im not sure what to do. I would think that if the compressor was bad i would hear the bearings grinding after a while or it would seize.
Reply With Quote
  #4  
Old 11-14-2007
Blhde's Avatar
Member
 
Join Date: Oct 2005
Location: Northern IL
Posts: 2,804
Try a new belt. It may be tracking funny from being worn.

As far as the compressor. It cycles on and off. If the noise is there when the compressor is running then its the bearings. If the noise is present with the ac off then the clutch is to blame.

I would check that out, replace the belt if it has some age.
Reply With Quote
  #5  
Old 11-14-2007
exploder01's Avatar
Member
Thread Starter
 
Join Date: Aug 2007
Location: Valois, N.Y.
Posts: 143
the noise is present whether the compressor is running or not. Im starting to think that maybe i should just replace the compressor. Can I buy the clutch and compressor as one piece or do I have to get them seperate. Never honestly worked with ac before.
Reply With Quote
  #6  
Old 03-11-2008
jrpro130's Avatar
RF Veteran
iTrader: (1)
 
Join Date: Sep 2005
Location: Florida
Posts: 5,057
I'm not one to usually bring back threads fromt he dead...but I have the same exact problem as exploder01.

If I spray some wd-40 on the compressor...it stops. I get it anywhere from 2k-3krpms and UP.
Reply With Quote
  #7  
Old 03-12-2008
jrpro130's Avatar
RF Veteran
iTrader: (1)
 
Join Date: Sep 2005
Location: Florida
Posts: 5,057
Well, I replaced my ac clutch, still making noise, a little better, but not much.

It's so aggrivating, and I don't want to replace my ac condenser, thats a BIG job that I don't want to even touch.

Anyone got ideas?

I replaced the idler, tensioner assembly and pulley, and ac clutch with no improvement. It's definetly coming from the AC.

What I don't get is the old AC clutch WAS BAD!!! I was listening to the bearing and it was just crunchy sounding, now I have a perfect ac clutch in there, and it still is making the same noise...

I mean it must be internal, but it does it with the AC OFF which I don't understand. Only the clutch is spinning...and I replaced it!!!!
Reply With Quote
  #8  
Old 03-12-2008
Rev's Avatar
Rev Rev is offline
Level I Supporter
 
Join Date: May 2005
Location: San Diego, CA
Posts: 1,179
It sounds more like a worn/slipping belt problem. If you sprayed wd-40 on the belt and it went away for a while. The only thing associated with the A/C I can think of would be if the clutch is dragging or excessively high pressure in the system, but I believe there is a high pressure cut out switch so it should cycle it off in that case. I’d try replacing the belt first.
Reply With Quote
  #9  
Old 03-13-2008
jrpro130's Avatar
RF Veteran
iTrader: (1)
 
Join Date: Sep 2005
Location: Florida
Posts: 5,057
I just bought a new belt (motorcraft from ford) a week or so ago, didn't have any problems until a few days after that (I changed pullied the same time) and my alt went bad the day before my problems. It's not the alt, it's not even close to the sound of a squeaking alt.

So...I bought a gatorback, I'll try my luck. I've heard of defective and LOUD belts from motorcraft before...so it wouldn't surprise me that I have one.
Reply With Quote
  #10  
Old 03-13-2008
Seahawk's Avatar
Member
 
Join Date: Mar 2008
Location: Sheboygan County, WI
Posts: 376
It seems like the ac compressor might be worn out and the insides might be making the noise. Try just replacing the compressor if replacing the belt don't work.
Reply With Quote
  #11  
Old 03-13-2008
Seahawk's Avatar
Member
 
Join Date: Mar 2008
Location: Sheboygan County, WI
Posts: 376
hey jrpro130, Your belt is probably not bad, my dad is a parts manager and said that 9/10 noisy belts are just fine, they just need a little belt grease.
Reply With Quote
  #12  
Old 03-13-2008
drj303's Avatar
Member
 
Join Date: Jan 2008
Location: Montgomery, AL
Posts: 31
I had a high pitch squeal on a car I owned previously only when the AC was on. I assumed it was the belt squealling accross the pulley. I found out later that there was a pin hole in the high pressure line that once the pressure built up would release refrigerant. The refrigerant was at such a high pressure that when it struck the rubber cover over the distributor cap it made it vibrate causing the squeal. Sort of like blowing on the edge of a piece of paper.

Although, since WD40 made it stop I doubt this is the problem.
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
A/C Compressor help HarryTasker 4.0L OHV & SOHC V6 Tech 15 05-10-2012 04:03 AM
a/c compressor help j99ranger4x4 General Technical & Electrical 0 09-15-2010 07:38 PM
OHC needed adn info needed plz help OneTireFire General Ford Ranger Discussion 3 04-15-2010 07:34 AM
******URGENT HELP NEEDED***TRUCK TORN APART****NEED HELP****** Dangerranger01 Exterior Semi-Tech 34 07-28-2009 01:52 AM
compressor fuse problem. HELP t_schloesser General Technical & Electrical 2 10-13-2008 10:15 PM


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 10:41 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.