AC issues

[Foxpen]

Wasn’t sure if this should go in the HVAC section or not, since it has to do with the factory air I put it here. Just started on a long road trip today in a Ford E450 shuttle that I’ve been renovating. On the road 2 hours and my air in front dash went out. Fan blows for a second and then gets weaker and weaker. Vent feels cold, but no fan. If I let it set for a while it will do the same thing- blow for a minute or so but getting weak quickly. Any ideas??

[Ronnie]

Two ideas,

1. could be evaperator freezing up and blocking air flow with ice. Usually low refridgerant can cause that. Can you turn off the a/c but leave the fan on for vent? If so do that and see if after 10-15 minutes air flow will start increasing. If it does then turn a/c back on till air does not come out again and repeat the cycle.

2. blower motor going bad.