Yes if you don't it will all leak out when you remove the switch and you'll freeze yours hand.minostar73 wrote:Hello,
This switch is screwed on to the dryer correct?
Do you have to discharge your refrigerant before removing the switch?
Thanks for any tip.
where is this sensor located?labsy wrote:Finally got to proper data about A/C refrigerant pressure sensor.
It's one like this:
what I did was connect 2kOhm and then 50kOhm resistor between 5V feed and return Signal wire to bypass the sensor. In one case A/C kicked in alone, and in other case A/C + refrigerator cooler fan both kicked in.
Which is OK...in one case CPU thought refrigerant pressure is within low limit, meaning it's not hot, so only compressor kicked in, while in other case CPU detected high pressure, meaning refrigerant is hot and needs cooling.
With this simple procedure I found out, that my NEW A/C pressure switch is broken and needs to be replaced.
Took me 1 month to check everything else and come back to just replaced (obviously failed) pressure switch, which needs warranty replacement.
Not sure on your diesel, but on my 4.0L V6 it's close to the battery on the left side of the engine bay, located on the high pressure line.Graham W wrote:where is this sensor located?labsy wrote: It's one like this:
My Motor turns but despite being refilled its the same, blows warm most of the time. No leaks detected.....