Mercury Repair Questions? Ask a Mechanic for Answers ASAP
Hello. My name is ***** ***** I am happy to assist you today. Give me just a moment to review your post, and I'll be right back with the help you need.
Can you give me your pressure reading, need the low and high side readings with the AC running please.
Normal pressure on this system should be right at 35 to 40 PSI on the low side and 200 to 210 PSI on the high side, are you sure you not over charged? Your pressures are on the high side.
If you run some water over the condenser dose the temp come down any ?
Let try that when you get a chance and also try clamping of the heater hoses to stop the flow of coolant through the core and let see if the temp will change, post back with the results and we can work from there.
It would seem like a pressure issue unless the evaperator is trying to freeze up, have you scanned the system to see if there are any fault codes setting?
With all the parts you replace this thing should be blowing cold as ice.
One other thing that comes to mind that there are known issue with could be a failing evaporator discharge air temperature sensor .
Have you had a look at the evaporator discharge air temperature sensor , there are known issues with it sending a fault reading from the evaporator which can cause the compressor to cycle.
See the link below for its location as well as the steps to test it in the second link,https://dl.dropboxusercontent.com/u/104923897/discharge%20sensor%20Sept%208.pdfhttps://dl.dropboxusercontent.com/u/104923897/Evap%20temp%20sensor%20Sept%208.pdf
Okay let check the Evap sensor and see if it checks okay, theirs not much left providing none of the new parts are defective which is very doubtful.
Did you try blocking the heater hoses off?
Okay the complete system is new and the only thing that looks odd to me is the pressure readings , they seem on the high side. Unfortunately I am out of ideas. If you would like, I can open the post back up for you and perhaps someone else may have something new to add.
Okay, doing so now.
Hi Im David, just throwing my 2 cents in. With the manifold gauge set hooked up and the ac running what are the high side and low side cylcling at ?
ok, 30 is a bit high but not bad. hide side is a problem. it should cycle
when you evacuated the system before replacing all of the components, did you pull vacuum for at least 30 minutes?
ok. statically right now. vehicle off. manifold gauge hooked up, what are your readings.