1990 379 low air volume from vents.

Since my last comment I had a mini split installed. Yea, $1000 out the door. But that's what the mechs wanted to fix my a/c. I got tired of dumping money into that a/c. I have a Senville 9000btu and a 1500 watt pure sine wave inverter. Now I can sit without idling when the ports close for lunch.

 

Please post pictures.

 

I would have attached them but didn't have any good ones showing the hood. Here's the best I have now. I'll post more on Monday when I'm back with truck.

 

Isn’t the split supposed to be in the rear ? Ok.

 

I never said where I installed it. Why would you just assume its not behind the sleeper?

 

That’s what I was referring to when I said “rear”.

 

I put my level on my hood and it shows about a 3° angle. So it's really not noticeable.

Maybe your hood is from a different year 379?

 

Did you change the cabin filters? Intake?Clean the evaporator coils? The fan? I use a swiffer to go into the ductwork to clean as much as I can .

 

I’ve seen blower motors turn the wrong direction if not wired correctly. I’ve seen the wrong squirrel cages installed. Both will still move air but not a lot of it.