Steve,
I see posts about blend doors causing no heat, but will it cause poor air conditioning? My 01' NB AC is pretty weak these days and I've got foam in the vents.
Yeah the A/C will be weak , there are other causes for it to be weak too, the missing foam doesn’t help.
If the charge isn’t correct.
If one or both fans are inop.
What are the pressures with the a/c runningIf close to each other then the RCV
( refrigerant control valve ) could be starting to fail. That can be changed it’s fairly easy.
What’s the condition of the cabin air filter?
Is the condenser plugged with dirt and bugs?
What’s the evaporator look like?
Just some issues I’ve run across ….
Hope this helps.