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Re: [GMCnet] Dash A/C recharge [message #88443 is a reply to message #88438] Sun, 13 June 2010 18:41 Go to previous messageGo to previous message
emerystora is currently offline  emerystora   United States
Messages: 4442
Registered: January 2004
Karma:
Senior Member

On Jun 13, 2010, at 5:30 PM, Thomas Mike wrote:

>
>
> Thanks Emery and Matt,
>
> i did use the kit. Hope I didn't do any permanent damage. As I posted, I changed the adaptor and used the oil that came with the kit. Filled with the three cans and still no cold air. I put it in the hose that did not have the low pressure switch on it. Had to jumper the low pressure switch to get the compressor to engage. Still no cold air after the third can.
>
> Where do I go from here? Can I buy the Duracool and fill overtop of the R134 that I put in today? Or should l do something else?
>
> I was not using a pressure gage, just hooked the cans up with the hose that came with it and let them flow.
> --
> Mike Thomas
> Troy, MI
> 77 Eleganza II
Unless you drained and flushed out the original mineral oil before adding the R134a you have a situation that will probably eventually clog up your system.

I would

1. open the hoses and flush out the system including the evaporator and condenser and compressor.
2. throw away the old drier and replace it with a new one.
3. after a good flushing install the drier and reconnect the hoses.
4. put the correct amount of oil into the compressor
5. vacuum pump the system to remove all traces of flush solvent, R134a and moisture.
6. install Duracool or HC12a.


This is going to be a lot of work and expense. Too bad you didn't post your message to the gmcnet before installing the R134a.



Emery Stora
77 Kingsley
Santa Fe, NM


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