A/C smell 
A/C smell
This is a common problem with pretty much all GM products. There was a TSP out about it a while back (it's been around forever.) I don't have it handy and.. well I tried and I can't find it. 
but basically.. it says it's caused by slight mildew build up inside the a/c ducts/internal airbox from too much moisture.
I wish I could find it..! The solution is to dry it out.. I think the dealerships had some cleaner they sprayed in there. if I find it or.. if anyone else knows what TSP I'm talking about feel free to post it.
My truck has the same problem but it's only at startup, it goes away as the compressor runs.
but basically.. it says it's caused by slight mildew build up inside the a/c ducts/internal airbox from too much moisture. I wish I could find it..! The solution is to dry it out.. I think the dealerships had some cleaner they sprayed in there. if I find it or.. if anyone else knows what TSP I'm talking about feel free to post it.
My truck has the same problem but it's only at startup, it goes away as the compressor runs.
Yes on my Civic I know where to spray the Lysol and it cleans it up pretty good, but on my Z I'm not sure where the air inlet is so i don't where to spray. thanx for all the replies.
Its usually caused from moisture, you run the a/c and shut the car off..that moisture will just sit in a closed car and cause that musty smell.
I usually shut the a/c off and run the fan when i am near my house..and it cut a lot of the musty smell..
I usually shut the a/c off and run the fan when i am near my house..and it cut a lot of the musty smell..
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
TECH Senior Member
Joined: Dec 2001
Posts: 5,399
Likes: 3
From: Jacksonville, FL
Remove the panel under the glove compartment, disconnect the electrical connector to motor, remove 3 screws - motor and blower comes out as a unit. Look inside and clean/dry it out as necessary. There's no cabin filter or anything, just gets outside air from the cowl. My guess is there's debris in there, combining with AC condensate water - that's the source of the smell. Probably see where the air comes in with the motor/blower removed.
Remove the panel under the glove compartment, disconnect the electrical connector to motor, remove 3 screws - motor and blower comes out as a unit. Look inside and clean/dry it out as necessary. There's no cabin filter or anything, just gets outside air from the cowl. My guess is there's debris in there, combining with AC condensate water - that's the source of the smell. Probably see where the air comes in with the motor/blower removed.
+1. I've been looking for it but it seems to be camouflaged well. (I would like to locate it without ripping things apart.
I've got to think its in the engine compartment because my summer vent air is hotter than what comes in through the windows...
I've got to think its in the engine compartment because my summer vent air is hotter than what comes in through the windows...
Thanx guy's for all the reply's. I found the thread and I will look tomorrow and give it some spray. It smells really musty right now but this will fix it.
It's moisture build up on the evaporator itself.. GM makes a evap coil coating spray, part# 12377951.. It's pricey, but works very well.. Most techs will drill a small hole in the evap case, just big enough that the supplied spray tube will fit in.. Then just spray the coil coating, plug the hole when done & problem solved.
It's moisture build up on the evaporator itself.. GM makes a evap coil coating spray, part# 12377951.. It's pricey, but works very well.. Most techs will drill a small hole in the evap case, just big enough that the supplied spray tube will fit in.. Then just spray the coil coating, plug the hole when done & problem solved.
