A/C troubles
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Joined: May 2005
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From: YORK S.C.
if the compressor is kicking out usually that means it's low on freon..i would bypas the low pressure switch and see if it comes on..don't run it too long that way you could burn up the compressor..if it comes on that way,i would add some freon, to see if it gets cold if so then you probably have a leak somewhere.. do you know if it has r-12 or r-134a?
Posting Guru
Joined: Sep 2004
Posts: 1,915
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From: Yokosuka, Honshu, Japan
Yeah, the major leak areas are those spring-couplers like on the fuel lines on the fuel-injected 2.9, the o-rings, and the compressor seals. More than likely, unless it's been retrofitted, it's R-12, which is pretty expensive to come by (I saw an ad for a case for like $350 or something once). Best bet is to get the retrofit parts kit and all new o-rings and all the stuff needed to basically do an overhaul on all of the seals, etc., then purge it and charge it with R-134a. Normally, the compressor kicks on and off to maintain the pressure / temperature where it needs to be, but if it kicks on and then back off and doesn't kick back on, then you're low on refrigerant. It took me one large "quickie-charge" bottle and part of a smaller bottle to get my Nissan recharged yesterday evening (or earlier tonight, whichever works!). Hope this helps.
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Senior User
Joined: Feb 2004
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From: new braunfels ,tx
I put some stuff called SNOOP on the O-rings, its basically a soap surfactant that bubbles if theres a leak..I couldnt find a leak on the o-rings but if its leaking from the compressor seals does that mean the ones where it hooks up or something internal? By the way ive charged it with Freeze 12 similar to R12 but dont need a license. Cost ~8 bucks a can i think.
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Joined: Feb 2004
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From: new braunfels ,tx
Another thought.....IF i do decide to convert to 134 how many O rings r there that need to be replaced? Are all the orings on the low pressure side ?
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