Thread: whistle noise behind dash, why?

Originally Posted by bluebsh

oh gawd... if it's the same part as on a home AC unit, I can't imagine this going well getting fixed... I had a clogged orifice at the A coil in my house, froze the A coil into a block of ice...

is something like that easy to have fixed? I assume I'd need a AC person to do it since we are dealing with refrigerant

I'm pretty sure the orifice tube is an easy replacement. It's in between two lines that come apart on my year I'm pretty sure. The system would have to be evacuated. I'd find where it's located and confirm it's the noise before throwing more parts at it. I'll try to find it for you. If you know the system, it's always between the condenser and the evaporator.