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Old 05-03-2012, 10:10 PM   #1
brent375hh
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My AC temp is 55 degrees

I don't know if it helpful to anyone but tonight I went for a drive with my AC on for about 10 miles with a meal thermometer in the vent. It stayed 55 degrees regardless of fan position.

I would not rave about how cool the car gets, but for those having AC problems, I can at least give you some comparison.


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Old 05-03-2012, 10:23 PM   #2
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Ford has a history of under charging the A/C system at the factory and they do it on purpose. If they can save a half a pound of freon on every car built, it will save them millions in the end. A majority of owners will never notice the reduced cooling capacity except those in the sun belt or the desert southwest, and that is exactly what ford is counting on.
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Old 05-03-2012, 10:52 PM   #3
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I would rather they just make the whole AC unit smaller if they're going to do that... If it's going to be a bit warmer anyways, why not let us save a bit on gas while we're at it!
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Old 05-03-2012, 11:25 PM   #4
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Quote:
Originally Posted by Altis View Post
I would rather they just make the whole AC unit smaller if they're going to do that... If it's going to be a bit warmer anyways, why not let us save a bit on gas while we're at it!

Easy for you to say that in Canada, but some in the southern USA see AVERAGE summer daytime temps of over 110F (43C) and frequent temps over 115F (46C). When you deal with those temps having function AC is more than a convenience -- it could be a life saver...

I once drove from Lone Pine in California to Las Vegas through Death Valley and saw a temp of 126F (52C). Now I'm sure there are days when some places in Canada get a bit toasty, but not like Florida to southern California...


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Old 05-03-2012, 11:39 PM   #5
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Reduced charge can become an issue, if the undercharge is too severe. What happens is the evap coil gets to be WAY cold on the part where the actual evaporation is taking place, and the rest just doesn't change temp. That way cold area can freeze up into a giant ice block, which dams the airflow, and when it melts, it makes a hell of a mess of your floor. Source: HVAC experience and real life "Why is there a g puddle on the damn floor?" experience.
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Old 05-04-2012, 08:06 AM   #6
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So would the solution be to try and get one's dealer to recharge the system under warranty?
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Old 05-04-2012, 10:00 AM   #7
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So would the solution be to try and get one's dealer to recharge the system under warranty?

Exactly, as long as you can convince them its undercharged.
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Old 05-04-2012, 10:06 AM   #8
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It was around 90 and muggy here yesterday and I thought the AC worked fine. Didn't even have to turn it to max. Don't these cars use the 134A? You could just pay $10 for a can and put it in yourself.
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Old 05-04-2012, 10:24 AM   #9
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Originally Posted by raptor1956 View Post
Easy for you to say that in Canada, but some in the southern USA see AVERAGE summer daytime temps of over 110F (43C) and frequent temps over 115F (46C). When you deal with those temps having function AC is more than a convenience -- it could be a life saver...

I once drove from Lone Pine in California to Las Vegas through Death Valley and saw a temp of 126F (52C). Now I'm sure there are days when some places in Canada get a bit toasty, but not like Florida to southern California...


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Last year there were a few days that with the humidity in the Toronto area it was past 130f ;-)

I remember because the local burrito shop (without a/c I found out as I was going in the door) I went to for dinner had to close down due to heath standards. Needless to say I haven't been back since.
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Old 05-04-2012, 12:28 PM   #10
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Originally Posted by Cylander View Post
Don't these cars use the 134A? You could just pay $10 for a can and put it in yourself.

All vehicles on the road with A/C built since 1994 has R134A in it. R12 is no longer manufactured, its outlawed.

Yes you can charge it yourself, but be careful you don't overcharge the system. An overcharge will reduce the cooling capacity just like an undercharge will. It would be better to use a manifold gauge set and charge the system based on pressures and temps to get an exact charge for the particular vehicle.
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