A/c not working correctly sometimes - 2000 Nissan Xterra

Based on all the info you have provided I think you need a professional to get involved here, I am not willing to "GUESS" what might be the issue or issues (more likely more than one).
Good luck

M./T or A/T , we car clueless till you say this magic work.
me Auto.
me stick.

It could be a problem with your electrical system, or it could just be a faulty sensor. You should probably consult a mechanic.


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Hi,
Common problem on replacement pumps. The sending units on remanufactured pumps are made of mostly plastic components pressed together with a brass bushing or step pin. Sometimes they do not fit together snugly enough to work correctly all the time. This slop in the mechanism causes the resistance values sent by the rheostat to be erratic, sometimes fluctuating wildly or only working correctly in a certain range. (say above a half tank or below a half tank....rather annoying.) The only cure is to remove the pump and either repair the assembly for a snug fit (not for the average home mechanic) or take the malfunctioning pump assembly back to the auto parts store for warranty replacement with a hopefully correctly working unit.......sorry, no easy fix. Aftermarket pumps are very hit -miss. I have had several do this exact thing.
Please rate this answer......Thanks, Mike

Something in the system is worn, loose or or out of alignment, you will have to remove the door trim and watch the window while it is operating and correct any fault you see or replace worn parts/

what make you think the "TORQUE" Convertor is not working properly.

from what you describe all is well

if it is not working right, it could be many things....speed sensor, trans mission pump, bad convertor, bad valve in transmission, bad computer


Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/sean_54c3a3dc48a7773c

sounds like the nylon gear on the speed sensor in the transmission

I had the same problem with my 1990 2.5 Syncro.
By chance I discovered that the HT lead from the coil to the distributer was arcing onto the body, causing 'background' charge(?). Replaced the lead and every back to normal...

i had the same problem with mine it was the selector but you have to change the whole unit i picked one up from a wrecker for fifty bucks check the back of yours mine had a bunch of wires that were coroded

Hmmm... its gotta be the compressor.