Ok, pressures are all relative, you really need to know low and high side pressures to get a full picture of what's happening. Also need to have an idea of the ambient temperature. The temperature/pressure chart at www.aircondition.com can help there. Also, it sounds like you perhaps do not have a set of manifold gauges? Mandatory for A/C work, Harbor Freight sells a set for $50 or a bit less on sale.
An easy way to cheat is to monitor your center vent temperature. I like to watch the temperature as I add refrigerant, and of course quit when the temperature stops going down. You want to watch that especially with R134, because I thought that 2.2 pounds was the weight for R12. R134 should be around 25% less... Tjohn 82 300 SD 230K On 4/23/06, Levi Smith <[EMAIL PROTECTED]> wrote: > > > And speaking of AC... I've been monkeying with adding R134 to my system > (this being my first time, though the previous owner had converted > it). It > does seem to be working as the compressor is now kicking on, and I got it > up > to around maybe 35psi. But according to the can I'd probably rather be > closer to 55psi... > Now, if I've got this thing figured out, I'll never be able to fully add a > 13oz can as I can only empty it until the pressures are equalized. > Still, I've now added *about* 3 cans (I learned on the first one that as > much as it says shake well before using, they're so full that you can't > really shake much, but if you don't shake it during the adding, you'll > only > put about 1/4-1/2 the can in). > Still, it seems like it should only take about 3 cans to fill the system > (the label reads 2.2lbs), yet on the 3rd can I just put in, I still > couldn't > seem to get the pressure much over 35psi. Am I just adding more to the > system that is cycling and that's why I'm not seeing the immediate > increase? Or do I more likely have a leak? Or am I missing something > else > obvious? > > Thanks! > Levi > 83' 300D > _______________________________________ > http://www.striplin.net > For new parts see official list sponsor: http://www.buymbparts.com/ > For used parts email [EMAIL PROTECTED] > > To Unsubscribe or change delivery options go to: > http://striplin.net/mailman/listinfo/mercedes_striplin.net >
