If it is at the top of the AC drier, it may be as simple as the O-ring on the line that goes into the unit. Most chain parts houses (not sure about that in DR) have assorted O-ring sets you can buy that will have a size to fit this line.

The bad news is that you will lose all your refrigerant changing it out.

 

hello, thanks for the reply. The part is say is located on the front part of the bonnet, almost behing the right side lamp. Is it the same you mention?

 

Yes it is in that part of the engine bay. Picture attached is looking down at the top of it.

 

exactly that one!

when I take the black plastic cap I see that little bubbly gas come out non stop when the AC is on.

Will go to the mechanic to see if they have the replacement ring!

Thank you so much!!

 

There should be NO Bubbles with the Cap off. The Valve Pin in the Schrader Valve is probably leaking possibly due to a small amount of debris in the Valve. If you depress the Valve Pin and release it rapidly several times it may start to seal ok again.

I this exact problem on my 1999 Acura and depressed the pin several times to clear it.

 

+1 on what Paul said. The valve under the black cap does not have the O-ring. It is the line to the side of it I was referring to.

However if his fix works, it is cheaper and easy to do yourself. Sounds like where you should start.

 

Just get a new valve and recharge it with a machine. Took it up to my local shop and they used a gm part fit like a glove and I had the same EXACT leak. Driven 500 miles no problems or leaks yet. Cost was 40 bucks.