Nissan Frontier Forum banner
1 - 3 of 3 Posts

·
Registered
Joined
·
3,715 Posts
http://www.clubfrontier.org/forums/images/editor/color.gif

Rule #1: NEVER add anything with sealers or leak fix to an AC system, will kill it !!! Refrigerant, right type and amount of refrigerant oil, and some UV dye is acceptable !!!

Rule #2: See Rule #1 above.



Works well, just needs some gas.
If it "works well", I'd leave it alone.


Works well, just needs some gas. I want to put a small can of oil just to be safe.
Don't see any leaks. Looks to not have been worked on at all. Guy I got it from said me never charged it.
If it works "just OK", you may just have lost a small amount of refrigerant over time, and addition of some R134a would be justified. About 5 years ago, my untouched AC system in my '98 Frontier needed about 6 oz. R134a at about 190K miles, Arizona heat. That sufficed until last week when the high pressure hose developed a pinhole and I had to replace that line.

My untouched AC system in my 2004 Frontier needed R134a about a month ago, for the first time.

Note that typically a system will lose - by design - a tiny amount of refrigerant through the compressor seal to keep it lubricated, and "just needing a re-charge" every several years through attrition can happen (like in my instance), but more often a larger leak would be the reason, and a component would need to be repaired/replaced.
 

·
Registered
Joined
·
3,715 Posts
The high pressure hose attached to the compressor is a pretty common point of failure on these trucks. Look for signs of oil around the crimps if you are slowly losing refrigerant.
That's where I first noticed the pinhole, in the rubber hose, at 219.5K miles. My replacement line/hose leaked at the connection to the compressor, around the O-ring, described in my thread http://www.clubfrontier.org/forums/f46/1998-frontier-thread-179905/index5.html page 4 and page 5. This might have been accelerated by my fan clutch being bad causing higher pressures than optimal and I didn't notice as AC was still cold, and engine coolant hadn't gone up from its normal spot.

smj999smj - can you review my issue with the hose fittings not being fitting 100% flush in my thread and comment, thanks?
 

·
Registered
Joined
·
3,715 Posts
1 - 3 of 3 Posts
Top