New guy, question on A/C
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New User
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New guy, question on A/C
I have a 1995 aerostar with a strange problem. The A/C is cold but even with the fan on high there just is not much air coming through the vents. This happens whether in normal a/c, max, or even vent. I pulled the fan motor out and did not see anything clogged, the fan seems to have plenty of power when activated outside of the box. There does not seem to be a intake vent for the max a/c position either under the pass. side of the truck, I know sometimes things will get caught in there.
Any ideas?
I'm wondering if the evaporator is clogged or something.
Bob
Any ideas?
I'm wondering if the evaporator is clogged or something.
Bob
Postmaster
Joined: Sep 2003
Posts: 4,452
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From: Southern California
Hi Boss96:
Welcome to our FTE forum.
Try putting your hands over the defrost vent and the vent under the dash. If you feel air coming out, that means air is being diverted there instead of the central vents. In that case, you have a problem with the vacuum motor, or a line leading to the vacuum motor, not an electrical problem.
Welcome to our FTE forum.
Try putting your hands over the defrost vent and the vent under the dash. If you feel air coming out, that means air is being diverted there instead of the central vents. In that case, you have a problem with the vacuum motor, or a line leading to the vacuum motor, not an electrical problem.
Elder User
Joined: Aug 2003
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From: Houston, TX
Originally Posted by boss96
I have a 1995 aerostar with a strange problem. The A/C is cold but even with the fan on high there just is not much air coming through the vents. This happens whether in normal a/c, max, or even vent. I pulled the fan motor out and did not see anything clogged, the fan seems to have plenty of power when activated outside of the box. There does not seem to be a intake vent for the max a/c position either under the pass. side of the truck, I know sometimes things will get caught in there.
Any ideas?
I'm wondering if the evaporator is clogged or something.
Bob
Any ideas?
I'm wondering if the evaporator is clogged or something.
Bob
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New User
Joined: Aug 2006
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Originally Posted by cookkd
I had the same problem before I rebuilt my entire AC system....turned out to be crud on the evaporator core....only about 20 per cent of the surface area would let air through. If it turns out not to be a vacuum problem, take the evaporator core housing off and clean the core....it will make a world of difference.
How do you get access to the evap.? It looks like it can be done from the engine compartment, go I have to disconnect the drier and lose all my freon to get to it or will it pull open in one piece?
Again, TIA,
Bob
Elder User
Joined: Aug 2003
Posts: 624
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From: Houston, TX
Originally Posted by boss96
Ah, now that sounds possible..btw, I did check for air coming from the other vents while the a/c was on and that was not the problem, looks like vacuum lines are fine so far.
How do you get access to the evap.? It looks like it can be done from the engine compartment, go I have to disconnect the drier and lose all my freon to get to it or will it pull open in one piece?
Again, TIA,
Bob
How do you get access to the evap.? It looks like it can be done from the engine compartment, go I have to disconnect the drier and lose all my freon to get to it or will it pull open in one piece?
Again, TIA,
Bob
Some of those screws are a little hard to get to unless you have small hands. Getting them out is no problem with an extension, but getting them started is a real b*tch. The one that is close to the fan on the bottom comes to mind.....
Former ******
Joined: Nov 2004
Posts: 4,901
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From: Salt Lake City, Utah
Be careful with use of the word Freon and refrigerant. Freon is a refrigerant, but not all refrigerant is freon. Your vehicle should not have freon, but rather R-134a. Just thought I would clarify. If you were to ask a mechanic to remove your freon, he may tell you he does not have the proper equipment to handle freon.
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Elder User
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From: North Jersey, New Jersey
To verify what type of refrigerant is in your system look at the sticker on the top of the blower motor. R12 is freon and R-134a is the refrigerant that is widely available and most A/C shops have the equipment to recover.
Also to remove the accumulator you'll need a set of disconnect tools autozone has them for about $9.99. While the system is discharged I would recommend that you replace the accumulator and while your at it replace the orifice tube. A note on the orifice tube if you remove it and find bits of metal clogged in the wire filter then the system should be flushed.
Heres a nice site I found that will tell you everything you'll need to know about A/C.
http://www.autoactraining.com/
Also to remove the accumulator you'll need a set of disconnect tools autozone has them for about $9.99. While the system is discharged I would recommend that you replace the accumulator and while your at it replace the orifice tube. A note on the orifice tube if you remove it and find bits of metal clogged in the wire filter then the system should be flushed.
Heres a nice site I found that will tell you everything you'll need to know about A/C.
http://www.autoactraining.com/
Last edited by krankshaft; Aug 9, 2006 at 11:27 AM.
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