Originally Posted by matty
My questions is, do you think that the probe not insulated and clipped to the low pressure tube would effect performance this much ?!?! ANND when I get the diagnosis code 26- for the PBR, it only flashese once then goes away and flashes 25, all systems clear. Kinda wierd
If its the sensing bulb (attached to the expansion valve), then yes putting the insulation around it will help. I am not familiar with a cooling system in a car but a traditional TXV will need the most accurate reading from that bulb. It tells the valve to let more or less refrigerant flow. Adding the insulation will improve the quality of the reading.
Hope that helps.