Hi all,

300SDL... had the compressor and related bits replaced 2 years ago. 3 Weeks ago I had them fix the vent controls so more than just the far left vent would work.. It didn't really blow as cold when I got it home. A few days later it died completely - big puddle of goo in the driveway. I figure its 134.. Speaking of which, it was probably 105 outside when this happened here in Austin.

So I take it back to the shop, they say there was low/no 134, but they couldn't find the leak (they used dye) They put coolant back in and all is fixed... until tonite.

I'm cruising down the road and all of a sudden it starts to blow hot. I didn't get a sense that the compressor stopped, just that it all of a sudden started blowing hot. Immediately hot, faster than if you flipped the wheel all the way. I turned the A/C off and got it home. Popped open the hood, looked for leaks, didn't see any except my usual fuel leaks.

Hit the button to on and it started blowing cold... About 15 minutes between it blowing hot and getting home and it working again...

Any thoughts on what the problem might be? What could have caused last weeks burp of fluid over my driveway? It seemed to be all at once, not a slow leak. But it was parked for a day or two.

134 is cheap, do I just buy some and learn how to refill it myself? I've never done any A/C work and would be starting at point zero.


-M