Smell from vents after new compressor

Friendly format provided to inquire about automotive a/c systems.
Archived Forum

Moderators: bohica2xo, Tim, JohnHere, Dougflas, HECAT

Digital_Dad
Posts: 2
Joined: Tue Jul 21, 2020 7:55 am

Smell from vents after new compressor

Postby Digital_Dad » Tue Jul 21, 2020 8:02 am

2007 Ford Focus ZX3 2.0L 5 spd
Just had a mechanic troubleshoot and diagnose my a/c system for my birthday, I haven't had a/c for a couple years, so my wife paid to have it done. I paid to have him diagnose it, he found it needed an a/c kit(compressor, accumulator & orifice tube) he ordered the parts and installed them a few days later. My a/c gets to 40° which is fine, but I get this smell coming from my vents when it first comes on that smells like the old orifice tube he took out(I know what it smells like because I saved it and it is sitting on my desk, it is black, smells and full of crud). So why is this smell coming through my a/c? And would it sound crazy if I said it was getting more noticeable each day?
Al9
Posts: 240
Joined: Tue Mar 10, 2020 3:26 am
Location: Southern Europe

Re: Smell from vents after new compressor

Postby Al9 » Tue Jul 21, 2020 8:12 am

The old orifice tube might smell of compressor oil (PAG oil actually). This oil travels with the refrigerant across the entire AC system.

I have bought several auto TXVs to play with and some second hand parts for my car's AC (hoses, evaporator, TXV) and they all contained some leftover oil and smelt like the content of the PAG oil bottle i use to rebuild the parts i listed (and as chain lube). To me, the smell i'm talking about is reminiscent of a brand new rubber glove.
Digital_Dad
Posts: 2
Joined: Tue Jul 21, 2020 7:55 am

Re: Smell from vents after new compressor

Postby Digital_Dad » Tue Jul 21, 2020 8:45 am

Al9 wrote:The old orifice tube might smell of compressor oil (PAG oil actually). This oil travels with the refrigerant across the entire AC system.

I have bought several auto TXVs to play with and some second hand parts for my car's AC (hoses, evaporator, TXV) and they all contained some leftover oil and smelt like the content of the PAG oil bottle i use to rebuild the parts i listed (and as chain lube). To me, the smell i'm talking about is reminiscent of a brand new rubber glove.



Any idea why that smell is coming out my a/c vents on the inside of my car?
Al9
Posts: 240
Joined: Tue Mar 10, 2020 3:26 am
Location: Southern Europe

Re: Smell from vents after new compressor

Postby Al9 » Tue Jul 21, 2020 8:50 am

No definite idea, vent smells are hard to diagnose. Just wanted to comment the orifice tube smell.

If that car were mine, i'd have a refrigerant leak test done by a professional equipped with the appropriate tools, so to rule out any possible evaporator leak.

Return to “Automotive Air Conditioning Forum”