Engine Size: 3.3
Refrigerant Type: r134a
Apparently Nissan decided that the 2003+ Xterra did not need the front mounted electric pusher (helper) fan for the A/C system (which was on the 99 to 02 model) . Mine only has a single belt driven fan. Anyhow, I just got done replacing the A/C clutch hub as the rivets cracked and it was rubbing the pulley. I was told this was due to heat, and that the main fan clutch was probably on the way out (although is seems to work just fine).
I'm not sure if this type of failure could be heat related, but if it is I'm worried that it will happen again to the new compressor clutch. I'm wondering if it would be prudent to add in an electric helper fan from an earlier model Xterra, or even convert over to an all electric fan setup?
I'd appreciate any advice, thanks.
Edited: Mon June 30, 2008 at 2:28 AM by NickB
The reason they dropped the electric fan was a condensor change.
It sounds like you got some good advice. Fan clutches wear out. Fix the worn parts first, before you add more equipment.
Keep your belt drive fan. Replace the clutch with an OEM replacment if it is worn out. Check the FAQ's for information on evaluating fan clutches. A quality part will not be cheap, but it is worth the effort. I have seen white box chain store clutches quit after 20k miles. As the fluid in the clutch breaks down, they no longer reach full speed. The engine will not overheat, but high side A/C pressures skyrocket.
"Among the many misdeeds of the British rule in India, history will look upon the act of depriving a whole nation of arms, as the blackest."
~ Mahatma Gandhi, Gandhi, An Autobiography, M. K. Gandhi, page 446.
Thanks, I read your faq and will source an oem clutch fan.
Okay, so three years later and my replacement a/c clutch broke again. Same symptom as last time, one of the three round springs broke and so the clutch plate is scraping against the pulley again. When I replaced the clutch and pulley three years ago I also replaced the engine fan clutch with a new OEM part from the dealer. Is there a reason why these things keep breaking, and does anyone know were I can buy just the fan clutch and not the whole compressor assembly?
Oops, replied to wrong thread. Please see http://www.autoacforum.com/messageview.cfm?catid=2&threadid=19414&STARTPAGE=1 for the relevant thread.
Edited: Tue October 18, 2011 at 12:14 AM by NickB
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