Engine Operation Question - MustangForums.com

Go Back  MustangForums.com > Ford Mustang Tech > 2005-2014 Mustangs
Reload this Page >

Engine Operation Question

Notices
2005-2014 Mustangs Discussions on the latest S197 model Mustangs from Ford.

Engine Operation Question

Reply

 
 
 
Old 04-13-2018, 02:45 PM
  #1  
LordRipberger
3rd Gear Member
Thread Starter
 
LordRipberger's Avatar
 
Join Date: Aug 2009
Location: Purdue University Alum in Indy
Posts: 735
Default Engine Operation Question

Hey Guys,

I heard my engine kicking on something this morning. I opened the hood and saw the driver's side bottom spindle on the serpentine belt kicking on or off. I have never noticed this before. Is this normal or a sign that something is about break.

See the video.
https://drive.google.com/open?id=1jU...ct6zyFpoIqPxDX

I have heard the clicking on sound it makes before but never is such a quick repeating pattern.

Thanks.

Last edited by LordRipberger; 04-13-2018 at 02:52 PM.
LordRipberger is offline  
Reply With Quote
Old 04-13-2018, 07:15 PM
  #2  
DRAGUL
5th Gear Member
 
DRAGUL's Avatar
 
Join Date: Feb 2010
Location: Connecticut
Posts: 2,531
Default

That is the air conditioner compressor clutch turning on and off.
DRAGUL is offline  
Reply With Quote
Old 04-14-2018, 03:56 AM
  #3  
LordRipberger
3rd Gear Member
Thread Starter
 
LordRipberger's Avatar
 
Join Date: Aug 2009
Location: Purdue University Alum in Indy
Posts: 735
Default

Originally Posted by DRAGUL View Post
That is the air conditioner compressor clutch turning on and off.
That is odd. I didn't have my AC on.

Do you know why it kicks on and off like that? Shouldn't it just be on or off depending on if I have AC running or not, not kicking on and off like the video?
LordRipberger is offline  
Reply With Quote
Old 04-14-2018, 04:16 AM
  #4  
08'MustangDude
4th Gear Member
 
Join Date: Jan 2018
Location: Pennsylvania
Posts: 1,342
Default

If you have your defroster on, the window position, the A/C compressor
toggles. In the winter, I pull the A/C fuse, or relay that controls the
clutch so it doesn't do that. Even if you have the heat on, buy you have
the blower on with the vent in the window position, some cars, the
A/C compressor comes on, AND, the fan will keep running. Mine does...
08'MustangDude is offline  
Reply With Quote
Old 04-14-2018, 11:14 AM
  #5  
bstang14
1st Gear Member
 
Join Date: Jun 2014
Location: Connecticut
Posts: 136
Default

Yep. Compressor cycles even with a.c. off.
bstang14 is offline  
Reply With Quote
Old 04-14-2018, 12:23 PM
  #6  
danzcool
4th Gear Member
 
danzcool's Avatar
 
Join Date: Oct 2008
Location: CA
Posts: 1,920
Default

Originally Posted by 08'MustangDude View Post
If you have your defroster on, the window position, the A/C compressor
toggles. In the winter, I pull the A/C fuse, or relay that controls the
clutch so it doesn't do that. Even if you have the heat on, buy you have
the blower on with the vent in the window position, some cars, the
A/C compressor comes on, AND, the fan will keep running. Mine does...
The A/C actually removes moisture from the air... you get better defogging if you are blowing dry air at the windows rather than moist air.
danzcool is offline  
Reply With Quote
Old 04-14-2018, 01:09 PM
  #7  
08'MustangDude
4th Gear Member
 
Join Date: Jan 2018
Location: Pennsylvania
Posts: 1,342
Default

Originally Posted by danzcool View Post
The A/C actually removes moisture from the air... you get better defogging if you are blowing dry air at the windows rather than moist air.
I know, but I still don't like it...
08'MustangDude is offline  
Reply With Quote
Old 04-14-2018, 01:21 PM
  #8  
bstang14
1st Gear Member
 
Join Date: Jun 2014
Location: Connecticut
Posts: 136
Default

It actually is supposed to prolong the life of the compressor and seals. Cycling keeps things "flexible" and prolongs the seal life. Or at least that is what I have heard.
bstang14 is offline  
Reply With Quote
Old 04-17-2018, 02:16 PM
  #9  
Derf00
6th Gear Member
 
Join Date: Feb 2005
Location: AZ
Posts: 11,321
Default

Originally Posted by 08'MustangDude View Post
I know, but I still don't like it...
It's a complete and total loss, sell the car. Engine is going to blow up and take the A/C with it......

All cars/trucks operate that way. Maybe get a motorcycle?
Derf00 is offline  
Reply With Quote
Reply
 
 
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Razzoo
5.0L (1979-1995) Mustang
1
04-14-2018 11:50 AM

Forum Jump

Thread Tools
Search this Thread
Advertising
Featured Sponsors
Vendor Directory