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Old 06-04-2013, 12:44 AM   #1
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Removing active grille shutters

So I've been reading a lot of posts around here regard Foci overheating and having weak A/C and it dawned on me that the problem may lie with the grille shutters. A lot of people also seem to think that a problem with the DCT is that the clutches can't handle excess heat well. Has anyone here tried removing the shutters? Besides a dip in fuel economy would it cause any other problems? I can't imagine the car overheating because they were removed, unless that somehow messes with the programming of the other cooling components.


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Old 06-04-2013, 12:48 AM   #2
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The shutters appear to still be wide open most of the time in town, as well as when with the a/c on the shutters are supposed to be open for cooling purposes.

If it was really that detrimental why would they fit them?

Although I can say my ST doesn't seem to have nearly as cold an air conditioning as my SEL did even though both had the exact same grille shutter system and more than likely the same condenser.
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Old 06-04-2013, 01:18 AM   #3
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Removing them seems a bit much.
Before that, try disconnecting them. They are run by the computer, and should have a default open setting.
If you try disconnecting them it will certainly set a code. and it may even send your engine into default 'limp' mode!
Anyway better to find out BEFORE you start ripping them off.

The air conditioning is weak because the car uses a small compressor to boost gas mileage. Nothing to do with grill shutters.

I have read only a few posts about overheating.. Not enough to make me even think about a drastic step like taking out the shutters.

One other way you could resolve you desire is to trim the shutter flap so they can open and close but do nothing because you cut off the flaps on the rods.
That would allow the computer to think they are still there.. Though ??? If the computer will set a code because the shutters do nothing..??

I have not had any issues with either air or overheat.
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Old 06-04-2013, 01:38 AM   #4
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Quote:
Originally Posted by suss6052 View Post
The shutters appear to still be wide open most of the time in town, as well as when with the a/c on the shutters are supposed to be open for cooling purposes.
Ah, I was unaware of the fact that they were always open during a/c use, never mind. I really just wanted a second opinion, I wasn't really serious about doing this under warranty anyway. It just strikes me as odd that someone would design something to block air from getting to the radiator- which is kind of important.

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The air conditioning is weak because the car uses a small compressor to boost gas mileage. Nothing to do with grill shutters.
Guess I'm just spoiled then, my mid 90's Caddy would give you frostbite if you had the AC on max. Of course on an old luxo-barge, being eco friendly was of least importance. Maybe I'll just get the charge checked to see if something is wrong there.
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Old 06-04-2013, 01:45 AM   #5
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Quote:
Originally Posted by Elizabeth View Post
Removing them seems a bit much.
Before that, try disconnecting them. They are run by the computer, and should have a default open setting.
If you try disconnecting them it will certainly set a code. and it may even send your engine into default 'limp' mode!
Anyway better to find out BEFORE you start ripping them off.

The air conditioning is weak because the car uses a small compressor to boost gas mileage. Nothing to do with grill shutters.

I have read only a few posts about overheating.. Not enough to make me even think about a drastic step like taking out the shutters.

One other way you could resolve you desire is to trim the shutter flap so they can open and close but do nothing because you cut off the flaps on the rods.
That would allow the computer to think they are still there.. Though ??? If the computer will set a code because the shutters do nothing..??

I have not had any issues with either air or overheat.
The a/c compressor isn't that small, although if the system is slightly over or under charged the efficiency drops off. Not sure if it was just because I tinted the windows on the other one, but the a/c on the ST seems weaker than the SEL was, but it should be the same.

Quote:
Originally Posted by xwhit3devilx View Post
Ah, I was unaware of the fact that they were always open during a/c use, never mind. I really just wanted a second opinion, I wasn't really serious about doing this under warranty anyway. It just strikes me as odd that someone would design something to block air from getting to the radiator- which is kind of important.


Guess I'm just spoiled then, my mid 90's Caddy would give you frostbite if you had the AC on max. Of course on an old luxo-barge, being eco friendly was of least importance. Maybe I'll just get the charge checked to see if something is wrong there.
I haven't been able to watch them while driving, but it does seem like it would have to remain open with the a/c on or the condenser core would freeze and the a/c would no longer work.

The only case for removing the active grille shutters is on the ST if you wanted to fit a larger front mounted intercooler
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Old 06-04-2013, 02:23 PM   #6
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I haven't been able to watch them while driving, . . .
LOL. Quit being such a py - set the cruise control and crawl out on that hood!
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Old 09-27-2013, 10:35 AM   #7
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Quote:
Originally Posted by suss6052 View Post
Although I can say my ST doesn't seem to have nearly as cold an air conditioning as my SEL did even though both had the exact same grille shutter system and more than likely the same condenser.
My guess would be the intercooler and its location in front of the raditor. When I added a turbo and front mount to my Contour I noted that if I didn't turn the A/C before moving, more so on the highway, the A/C would not be very cool. But let it run first then drive and it was fine. My take on this is the heat from the front mount intercooler not letting the A/C condesor work as it should.
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Old 09-27-2013, 11:48 AM   #8
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Question- if the Grille shutters are open whenever the air is on, does that mean if you use AC on the highway the shutters will stay open all the time?
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Old 09-27-2013, 11:55 AM   #9
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Question- if the Grille shutters are open whenever the air is on, does that mean if you use AC on the highway the shutters will stay open all the time?
I believe they do stay open anytime the A/C is on. However, I have not been able to hold on tight enough to the hood at highway speeds to physically examine that theory.
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Old 09-27-2013, 01:44 PM   #10
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I believe they do stay open anytime the A/C is on. However, I have not been able to hold on tight enough to the hood at highway speeds to physically examine that theory.
Lol. That would explain why I can only get 36mpg or so on the highway. With the AC turned off I average closer to 40, granted not having the compressor running helps efficiency a lot.
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