You will need the part number on your compressor and the manufacturers name.

 

I would advise you to test its function first using AC guages and a hotwired connector because to replace it involves losing all the regfrigerant and paying for a recharge, you might find a garage who will vacuum down & recycle the refigerant for free if you pay them for the subsequent recharge but in effect you are buying back your own refrigerant.

 

Its better to know that the valve is faulty, mine was but so also was the new one that I bought but it cost me the price of a yet another recharge to find that out 😞

 

My offer still stands.

Heh, I wasn't planning to order anything without testing first to determine what is required. It's just good to have the knowledge on hand what *might* be needed, when you go to a workshop...

If the shear plates are intact, if the central hub nut is tight and the shaft is turning, if the low side pressure is correct for the ambient temperature and if the high side does not rise when the N280 valve is commanded (double checked by hotwiring) then its likely to be that or an internal compressor failure.

 

I got fed up with throwing costly recharges at mine when the last purchases N280 appeared to work on the testbench but still no aircon when fitted that I bit the bullet and bought a cheap Chinese pump, not so cheap when it failed after 3 months with the hub splines stripping 😞

 

I was determined to find the internal fault on the old one so I stripped at and everything looked in pristine condition, went to reassemble it (really tricky, you need to be an octopus) and it self destructed throwing all the precision ultra clean parts all over my dirty workshop floor and I only found about 80% of them, boy was I pi55ed off!

 

Lucky that I did not throw it all away as I was able to use the hub to resurrect the first Chinese one and keep it as a spare.