"Andrew" <andrew@nats.edu> wrote in message
news:d9m2eg$d19$1@news-int.gatech.edu...
> HND <fake_one@mail.com> wrote:
>> guys,
>
>> I've got an A/C pipe leaking Freon ( the one in front the evaporator )
>> on
>> Honda '93 accord.
>> It's actually a tiny hole in it and hate an idea of spending $300-$400 to
>> get it replaced .
>> Is it possible to seal it with the stuff like a liquid aluminium or smth.
>> like that and refill the system?
>> thanks
>
> I have a 1993 Accord, and my A/C began to fail a few weeks ago.
> I brought my car to my mechanic yesterday. He converted to R134
> and he detected a very slight slight leak in the evaporator. He
> he said the evaporator repair would cost $250, but he recommended
> that I try an A/C sealant instead.
>
> http://www.thetoolwarehouse.net/shop/CLP-946KIT.html
>
> My mechanic said that of all the types of work he does on Hondas,
> A/C repair has the highest rate of returns for recurring problems.
> He said there are hundereds of places the A/C system could be
> developing leaks and the best approach would be to try the sealant
> first.
>
> The R134 system is works well and is quite cold.
>
> Andrew
>
1993 was one of the first years for major evaporator leakage problems
industrywide. Many mfrs were changing to R134a and the evaporators they were
using (I don't know just what the difference was - maybe different alloy?)
began developing pinhole leaks. The problem was traced to corrosion caused
by dirt and pollen building up in the condensation on the evaporator and
forming a corrosive mud. Sealants would stop the initial leak, but more
would form. By 1995 just about everybody had added the now ubiquitous cabin
air filters to keep the mud from forming.

Mike