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Old Sep 3, 2005 | 06:50 PM
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Default AC not blowing

ok, when I start the car and turn the AC on it works great. blows cold and hard. but if I go on a road trip for an hour or more, even on high, the air barely comes out of the vents. It is still cold and you can hear the blower, but very little air.......is my compressor or condensor going out?

Thanks in Advance!!!!!!
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Old Sep 3, 2005 | 08:58 PM
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No, I don't think so. I have the same problem. If I turn the control over to the "fresh air" position, after a while it will blow full blast through the vents, then I can turn it over to AC and it will work fine.The AC works fine, just the right vents aren't open. Not sure if it's a problem with the control, or the actuators for the vents aren't working right.
All of the vents are powered by vacuum that comes from the back of the intake manifold, and through the control -> to the vent actuators, from what I can see from the Helms manual. Unfortunately, the Helms doesn't give much in depth details about what to do. If you figure it out, post up. I'm personally tired of this **** in 90* + weather.
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Old Sep 4, 2005 | 03:39 AM
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I had the exact same problem. Any amount of time in the car greater than 1/2 hour, and I would have no air coming out of the vents. Could hear the blower, but nothing came out of the vents. Ended up being my blower motor went bad. Installed a new one and everything works great!
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Old Sep 4, 2005 | 09:38 AM
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I have a complete AC system for sale. Take a look at the pics and let me know if I can help.

https://ls1tech.com/forums/showthrea...79#post3404679
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Old Sep 4, 2005 | 10:05 AM
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I could see it being a number of issues....

You could have a small vacc. leak.. so over time the actuators falls. if you turn it to another setting say on of the heat options it should relief the actuator and pull the other one up... then if you back to A/c that will re establish the vacc to that act...


Fan... although there is no explaination for it... these fans are pretty weak... (sadly ford's are much better) anyhoo. it could be that... Buy another one from the parts store... there not the easiest things to swap out although the appear to be. :x.... there are 3 8mm*i think 8mm* bolts that hold it up... $30 at your local parts store i'm sure..


If you do decide to replace it I highly suggest taking the seat out... they are really easy to remove takes about 5 mins and will make your life alot easier... 13mm... move the seat all the way back to expose the front ones then move it all the way forward to remove the rear ones... lift out... if you have power options you will need to disconnect the harness.
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Old Sep 4, 2005 | 06:25 PM
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I like the 30 dollar idea but if it was the fans, it doesn't seem that they would stop after an hour or so, I'll try switching to heaat and see if I get air coming back again which should also trouble shoot the fans I guess. If I have a vaccume leak, what am I looking at replacing?

thanks alot for your very helpful replies!!!
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Old Sep 4, 2005 | 07:01 PM
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Mine would do that every now and then. I would just be driving with the air on and all of a sudden it would almost stop coming out but the fan is still spinning the same. Nothing I did would fix it. It would than fix itself a few minutes later or if I parked the car and came back to it later it was fine.

Wierd ****. But it hasen't done it in over 2 years now.
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Old Sep 4, 2005 | 07:02 PM
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Originally Posted by 6spd
I like the 30 dollar idea but if it was the fans, it doesn't seem that they would stop after an hour or so, I'll try switching to heaat and see if I get air coming back again which should also trouble shoot the fans I guess. If I have a vaccume leak, what am I looking at replacing?

thanks alot for your very helpful replies!!!
I know I'm not having -engine-cooling problems, so that eliminates the fans for me. The suggestion about the vacuum leak makes sense to me. I guess I'm going to bite the bullet and see if I can track down/inspect the main vacuum line coming from the intake to the interior controls, as that seems the most likely culprit as nothing under my dash has ever been touched,and the intake has never been off. Need to find out where the line comes in through the firewall.Anyone know?
But to answer your question, it could be just replacing a vacuum line, or replacing a vent actuator (from what I understand, the actuators are vacuum operated and are normally closed until a vacuum is applied).
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Old Sep 5, 2005 | 01:21 AM
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Sounds like it is just freezing up. Most vehicles do this when the a/c is on for a while.

nice cold air turns into very little air, you turn the a/c off and turn it to fan and about 15-30 seconds later cold air blows again.
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Old Sep 5, 2005 | 08:07 AM
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Originally Posted by SScottie
Sounds like it is just freezing up. Most vehicles do this when the a/c is on for a while.

nice cold air turns into very little air, you turn the a/c off and turn it to fan and about 15-30 seconds later cold air blows again.
Well, that's certainly a possibility if the freon is low or if the system is plugged somewhere.
I've got a new compressor & accumulator (thanks to road kill/trash) and a good charge.
That's something good to check out,though.
In my case the AC vents may work fine all day, or may muck up multiple times in one day.It always blows cold air regardless.
Any luck yet, 6spd?
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Old Sep 6, 2005 | 03:36 AM
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I haven't had to take a long enough road trip again yet to check....
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