A/C Drain Clogged
Thread Starter
Le Mans Master
Joined: Feb 1999
Posts: 5,353
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From: And then it was said... "let there be blue Corvettes and yellow Camaros" Ft Worth Texas
Cruise-In IV Veteran
St. Jude Donor '09
A/C Drain Clogged
A friend at work thinks his 1999 Coupe a/c drain is clogged as his passenger footwell carpet is getting soaked lately (and it hasn't rained). Can anyone tell me how to access the drain hose so I can pass it along to him? Thanks.
Roy
Roy
Race Director
Joined: May 2000
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From: No more yankee my wankee, the Donger is tired!
Step 1 You need to get it on a lift, and while the engine is cool reach up and pull it off. Blow some compressed air through it, and also cut the slit to a larger size.
Step 2 You need to shoot compressed air into the drain hole itself incase that is the source of the plug. (Which is where mine was)
ALso pull your blower motor to look for rust in the windings.
Step 2 You need to shoot compressed air into the drain hole itself incase that is the source of the plug. (Which is where mine was)
ALso pull your blower motor to look for rust in the windings.
Drifting
Joined: Jul 2002
Posts: 1,262
Likes: 7
From: Kissimmee, FL
Here is some info on this - good luck!
All C5's should have the A/c drain elbow removed and the bottom end snipped off before reinstallation - all of them!! These little rubber elbows are pre-engineered to clog as they were designed with an inadequate size hole on the end - actually a slit. It is not too bad of a job. From under the car locate the elbow - just to the passenger side of center about 1/3 way up the firewall. Locating it is the hardest part - you need a good light and patience! Make sure the car is cool and wiggle the elbow off, snip off the tip and replace the elbow letting it touch the cowling (adjacent wall). I think this helps direct the drain flow. You will find these little buggers to be clogged with a white goop that will cause backup and overflow right on top of your "electronic brain" - under the passenger kick panel. Do not delay as it will happen - just as sure as there are column lock and gas gauge problems! BTW - you can do the elbow trick from the top but I found that to be the harder of the two methods because of the wire bundle that hides the elbow. Either way - just do it!
All C5's should have the A/c drain elbow removed and the bottom end snipped off before reinstallation - all of them!! These little rubber elbows are pre-engineered to clog as they were designed with an inadequate size hole on the end - actually a slit. It is not too bad of a job. From under the car locate the elbow - just to the passenger side of center about 1/3 way up the firewall. Locating it is the hardest part - you need a good light and patience! Make sure the car is cool and wiggle the elbow off, snip off the tip and replace the elbow letting it touch the cowling (adjacent wall). I think this helps direct the drain flow. You will find these little buggers to be clogged with a white goop that will cause backup and overflow right on top of your "electronic brain" - under the passenger kick panel. Do not delay as it will happen - just as sure as there are column lock and gas gauge problems! BTW - you can do the elbow trick from the top but I found that to be the harder of the two methods because of the wire bundle that hides the elbow. Either way - just do it!
Le Mans Master
Joined: Jul 2002
Posts: 7,076
Likes: 26
From: Nevada and Florida
Originally Posted by jojog
Here is some info on this - good luck!
All C5's should have the A/c drain elbow removed and the bottom end snipped off before reinstallation - all of them!! These little rubber elbows are pre-engineered to clog as they were designed with an inadequate size hole on the end - actually a slit. It is not too bad of a job. From under the car locate the elbow - just to the passenger side of center about 1/3 way up the firewall. Locating it is the hardest part - you need a good light and patience! Make sure the car is cool and wiggle the elbow off, snip off the tip and replace the elbow letting it touch the cowling (adjacent wall). I think this helps direct the drain flow. You will find these little buggers to be clogged with a white goop that will cause backup and overflow right on top of your "electronic brain" - under the passenger kick panel. Do not delay as it will happen - just as sure as there are column lock and gas gauge problems! BTW - you can do the elbow trick from the top but I found that to be the harder of the two methods because of the wire bundle that hides the elbow. Either way - just do it!
All C5's should have the A/c drain elbow removed and the bottom end snipped off before reinstallation - all of them!! These little rubber elbows are pre-engineered to clog as they were designed with an inadequate size hole on the end - actually a slit. It is not too bad of a job. From under the car locate the elbow - just to the passenger side of center about 1/3 way up the firewall. Locating it is the hardest part - you need a good light and patience! Make sure the car is cool and wiggle the elbow off, snip off the tip and replace the elbow letting it touch the cowling (adjacent wall). I think this helps direct the drain flow. You will find these little buggers to be clogged with a white goop that will cause backup and overflow right on top of your "electronic brain" - under the passenger kick panel. Do not delay as it will happen - just as sure as there are column lock and gas gauge problems! BTW - you can do the elbow trick from the top but I found that to be the harder of the two methods because of the wire bundle that hides the elbow. Either way - just do it!
And so does GM... There is no "cow teet" on my '04, just a molded piece with a 3/8" hole.
Thread Starter
Le Mans Master
Joined: Feb 1999
Posts: 5,353
Likes: 100
From: And then it was said... "let there be blue Corvettes and yellow Camaros" Ft Worth Texas
Cruise-In IV Veteran
St. Jude Donor '09
Thanks for all the info, I passed it along. I think I'll do the same fix to our two C5s before we get bit too.
Roy
Roy
