A/C short Cycles - Ford Truck Enthusiasts Forums

Notices
2004 - 2008 F150 2004, 2005, 2006, 2007 and 2008 Ford F150's with 5.4 V8, 4.6 V8 engine

A/C short Cycles

 
  #1  
Old 06-09-2005, 07:12 PM
MrFred
MrFred is offline
Junior User
Thread Starter
Join Date: Sep 2002
Posts: 56
MrFred is starting off with a positive reputation.
A/C short Cycles

My question is it normal for the A/C compressor to cycle several times a minute? The A/C is cooling very well and cools the cab even in very hot weather. It was over 90 today and humid.It doesn't seem to cycle as much in mild weather.

I took it in for the dealer to check everything today,and was told everything was fine,including the charge,ect.ect. The service manager took it for a ride and felt it was running normal. This is my first F150,however I have leased 3 Expeditions and never noticed the short cycling with them. The truck is a month old so if they missed something it gives me three years to see if it's going to stay working. I would like some feedback from others to help me know what to do, or not to worry. Thanks in Advance!

Fred

2005 F150 Lariat 4 x 4
 
  #2  
Old 06-10-2005, 06:54 AM
Biggziff's Avatar
Biggziff
Biggziff is offline
Posting Guru
Join Date: Aug 2004
Location: Upstate, NY
Posts: 2,402
Biggziff is gaining momentum as a positive member of FTE.Biggziff is gaining momentum as a positive member of FTE.
Several times a minute is not short cycling. every 10 seconds would be short cycling. You have high and low pressure limiting switches on every AC system to keep the compressor from running should you get high or low pressure.
 
  #3  
Old 06-10-2005, 07:44 AM
MrFred
MrFred is offline
Junior User
Thread Starter
Join Date: Sep 2002
Posts: 56
MrFred is starting off with a positive reputation.
I timed the cycles,they are every 8 seconds. That's 450 times per hour! I forgot to mention that I have been in the A/C trade since 1972. I repair A/C units from residental to industrial,however I have little experience with Auto.

Fred
 

Last edited by MrFred; 06-10-2005 at 07:52 AM.
  #4  
Old 06-10-2005, 12:37 PM
wizardeye
wizardeye is offline
New User
Join Date: Nov 2004
Posts: 1
wizardeye is starting off with a positive reputation.
I hope it's normal.

https://www.ford-trucks.com/forums/s...d.php?t=248434

My beauty has been cycling every 7-8 seconds from day one. I've had the AC system checked out and the dealer didn't find anything blatantly wrong. They report that vent temp is ok and manifold pressures are within speck.<?xml:namespace prefix = o ns = "urn:schemas-microsoft-comfficeffice" /><o></o>
 
  #5  
Old 06-10-2005, 01:19 PM
MrFred
MrFred is offline
Junior User
Thread Starter
Join Date: Sep 2002
Posts: 56
MrFred is starting off with a positive reputation.
Wizardeye, Thanks for the link. It very helpful to get feedback from others like yourself.Thanks!

Fred
 
  #6  
Old 06-10-2005, 01:34 PM
Biggziff's Avatar
Biggziff
Biggziff is offline
Posting Guru
Join Date: Aug 2004
Location: Upstate, NY
Posts: 2,402
Biggziff is gaining momentum as a positive member of FTE.Biggziff is gaining momentum as a positive member of FTE.
That seems strange to me. I went out and ran mine around the block and sat in the driveway...5 cycles per minute. 04 STX 4.6 4X4
 
  #7  
Old 06-10-2005, 03:07 PM
MrFred
MrFred is offline
Junior User
Thread Starter
Join Date: Sep 2002
Posts: 56
MrFred is starting off with a positive reputation.
Biggziff, mine doesn't short cycle in the driveway either,mostly going down the highway and only after it's been on for 5 to 10 minutes. I don't remember it doing it as much in cooler temps either. The hot weather seems to increase the cycles to every 8 seconds. If I can't find a cure, I will do the same thing I do on my other Ford's when there's a noise problem, and that's turn up the radio!

Fred
 

Last edited by MrFred; 06-10-2005 at 03:09 PM.
  #8  
Old 06-10-2005, 03:13 PM
bleoh
bleoh is offline
Freshman User
Join Date: Feb 2005
Location: Maryland
Posts: 38
bleoh is starting off with a positive reputation.
Could it be a fuel savings thing? I had a Mazda that you could set to cycle on off more and it was called "economy" mode.
 
  #9  
Old 06-10-2005, 03:17 PM
MrFred
MrFred is offline
Junior User
Thread Starter
Join Date: Sep 2002
Posts: 56
MrFred is starting off with a positive reputation.
Bleoh, thats possible, however if it causes the belts and A/C clutch to wear out prematurely then how much of a saving would that be?
 
  #10  
Old 06-10-2005, 08:34 PM
bleoh
bleoh is offline
Freshman User
Join Date: Feb 2005
Location: Maryland
Posts: 38
bleoh is starting off with a positive reputation.
Worked fine on my Mazda for the 10 years I had it, so I'm not sure how much extra wear it is.
 
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
AggieOutlaw
Excursion - King of SUVs
9
05-19-2015 02:26 PM
2Fords1Jeep
1997 - 2003 F150
2
08-25-2014 09:40 PM
R.J.M.
Ford Inline Six, 200, 250, 4.9L / 300
0
09-24-2011 04:30 PM
Samuelito
2009 - 2014 F150
2
07-27-2011 05:28 AM
vbl
Cooling, Heating, Ventilation & A/C
2
04-13-2002 12:48 AM


Thread Tools
Search this Thread
Quick Reply: A/C short Cycles


Contact Us About Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

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.