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Apr 25, 2025 | 11:47 AM

apeckham

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I'm in the process of reserecting my father's 1981 f100 , I've got it running finally and I turned the air on . Got very little volume of air coming out and what is is warm.
Where do I start as far as getting a back running again?
Thanks in advance

Apr 25, 2025 | 12:41 PM

kr98664

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Quote:

Originally Posted by apeckham

I'm in the process of reserecting my father's 1981 f100 , I've got it running finally and I turned the air on . Got very little volume of air coming out and what is is warm.

How long since the AC was last known to work? If several years, chances are good the system will need a full vacuum evacuation and recharge. But before doing that, I'd take care of the low airflow. Even if properly charged, there's no way to get adequate cooling if the airflow is restricted.

Also, do you know if this is factory or dealer-installed AC? Huge differences between the versions.

Please see this recent thread, Post #4 shows a picture of factory AC components. Post #5 has details about how to restore normal airflow:

https://www.ford-trucks.com/forums/1...all-my-ac.html

Apr 25, 2025 | 01:39 PM

apeckham

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It has been probably 8 years since it last worked. It's a factory ac

Apr 25, 2025 | 01:41 PM

apeckham

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I was thinking that something is plugging up the intake to the blower

Apr 25, 2025 | 02:40 PM

kr98664

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Quote:

Originally Posted by apeckham

I was thinking that something is plugging up the intake to the blower

The most likely clog point is downstream of the fan. This is a known problem area. Go to the link mentioned above and follow those links for more details.