ac vent problem
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Junior User
Joined: Apr 2004
Posts: 73
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ac vent problem
I have a f350 99psb, i put a new blower, compressor, dryer, and orfice tube, i also put the heater bypass valve. The problem is it doesn't blow enough air from the vents. I put i on max and a vent opens in the bottom and i can see the blower from there. I just don't know why its not blowing faster air. i also took all the vents off and put a leaf blower to make sure there was no plastic bag stuck in the vents. Thanks.
Of the next Riffraff East
Joined: Oct 2004
Posts: 8,679
Likes: 2
From: Concord NC
This is going to sound silly, but it has happened several time over the last few years. Check the return vent near the floor for a Walmart, foodlion, or whatever bag. There have been several sucked up, not to be seen again. I'm not sure if you could see it unless you look for it. I think the last was removed using a piece of coat hanger with a hook on the end.
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Junior User
Joined: Apr 2004
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It blows all speeds but very little air comes out, on high you can hear the blower air comes out but not very fast, if i close one vent it helps the others a little, where is the motor resistor located at? thanks for the help
Thread Starter
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Junior User
Joined: Apr 2004
Posts: 73
Likes: 1
This is going to sound silly, but it has happened several time over the last few years. Check the return vent near the floor for a Walmart, foodlion, or whatever bag. There have been several sucked up, not to be seen again. I'm not sure if you could see it unless you look for it. I think the last was removed using a piece of coat hanger with a hook on the end.
Ill check again it's happend to me before thanks
Rather Be Floatin
Joined: Oct 2005
Posts: 2,468
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From: Marble Falls, Tx.
The blower motor resistor is on the cover over the coils under the hood it is right behind your a/c accumulator should have a plug with 4 or 5 wires going to it. I just replaced my blower motor this past weekend because it was beginning to blow slower. If you hook a meter up to the plug that goes to the motor you should get 13v +/- (with truck running) and the fan on high. If the voltage at the motor is ok and you still arent getting the airflow i would bet on a bag being sucked up or a blower motor going out.
