Automotive Air Conditioning Information Forum

Hello, i am new to the forum. I have a 04 sierra that i am having issues with. Several weeks back i pulled out all the 134a changed the orfice tube with a new one, pulled a vacuum and added 134a back in to proper amt. (i was having issues before and hoped this would fix it). when i observed the pressures it was around 90deg outside and pressures from memory were around 50L/230H at idle and when i added throttle the low side started to pull into a vacuum. from what i can tell it cuts out on low pressure the when pressure rises it kicks in again. after awhile it triggers a code and have to reset ecu to get it to reset. it seems like a good deal of oil on high side also. is this normal. any advice is very much appreciated.

Thanks,
Todd

The problem(s) could be someplace else, e.g., too much oil. But the first questions about the OT you should verify: #1, Did you install the correct OT having the right orifice size, and did you install it in the proper orientation?*; #2, Did the replacement OT match the color(s) of the old one?; #3, What type of debris, if any, did you find on the screen when you removed the old OT?; #4, Is another OT already installed in the condenser outlet, and did you install the new OT elsewhere in the liquid line?; #5, Is an in-line filter located in the condenser outlet?

*OEM lists at least two different OT's for your vehicle, hence, question #1.