grilla3

Hi everyone just signed up.Had my wifes 02 lexus rx 300 motor removed to install rear main seal,When i got it back the ac wasn't very cold noticed clutch would kick on and cut off.I can't get a reading on pressure because compressor won,t run long enough.Does anyone know where fan clutch relay is, can't find it in relay box.A picture of or diagram would be great.Thanks for help in advance

Drcoffee

you should get a static pressure around 50 psi equalized in the system with the compressor off. If its lower than that, you either need a charge or he left it with a leak that needs fixing. You can jumper the clutch by giving it 12v. Its a single hot wire at the clutch. But I wouldnt if theres no refrigerant in the system

salimshah

Welcome to ClubLexus.

I would start with the shop who did the rear-main seal.

For proper diagnosis you do need to monitor both the low and high. To charge, you need to fill the low to the recommended low side pressure.

Salim