I'm getting barely any air from my vents, even when it's turned on high. I just replaced the heater core, and the panels that move when you change it from vent, heat, and defrost all moved fine. The blower motor sounds like it's blasting loud on high, but I'm not getting much. Any ideas? Should I take the blower motor out and see if it's clogged?

 

It's possible that you obstructed a door(s) when you replaced the core. That said, the motor is over two decades old, I assume, so it can't be as efficient as it once was.

JamesC

 

i have a similar problem. What helped was checking all of your vacuum connections under the dash, especially the one that is on the far right of the passenger compartment near the door

I helped mine, but it's still weak. It's on high, but it feels like medium.

 

Are the vacuum tubes easy to replace?

 

well I found one that was disconnected...

 

If there's a vac problem, the default will be defrost. If all functions work, then the problem lies elsewhere.

JamesC