[spano]

If you did the replacement and had an open system than you should have done a vaccum on the sytem to remove the moisture. The first bottle of 134a should have been sucked in quickly and may be enough to get your system to short cycle and suck more in. If not *AND I DON"T RECOMMEND THIS* place the bottle in a tub of warm water, the heat will cause the liquid to be come a gas and provide more pressure to overcome what is in the sytem already. This system charging should be done by a COMPETANT individual. Or jump out your low pressure switch. There was a thread about this about two weeks ago that gives more info.....