Question about 1995 Nissan Maxima

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Part 2... I tried what you told me to do, and they looked just fine. There has been a new development however, when I added the refrigerant this morning, the fan started to run again! And the A/C was blowing out somewhat cold air. However, I learned the true problem of why my A/C wasn't working: there is a leak somewhere along the R-134A coolant line around the front of the vehicle, and cannot pinpoint it. How much would you think a repair procedure would cost if it were on various areas of the coolant system, bearing in mind that the leak sounds towards the front of the engine block?

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  • LFDIII Sep 09, 2008

    The condenser looks like a couple pipes running in front of the radiator, right? If so, then that may be my problem [I'm assuming] because the crash pushed in the front reinforcement bar which may have knocked the condenser back a little, or if not at least puncture a hole into it [which I still cannot locate]


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  • Nissan Master
  • 726 Answers

You can purchase a leak detection kit, which consists of UV goggles and UV light.(black light). You would have to pump some refrigerant from a bottle that has die inside with the refrigerant. They sell those at any autoparts store. You can pump some in , run the AC and check/look with the UV gogles and the light as to where the die is coming out of. With the goggles the die will show flourescent green. Thats, where the leak is. Or you can go to a garage/dealer and they will charge you about $100-$150 to do the same thing. (except they will inject the die with a specialty tool and than look for a leak) Some of the cans of R134 from store have die inside of them already. Read the can label. (the UV die will not hurt the system at all). The UV goggles and the light will run you about $40-50??. As far as repairing the leak, it could be potentially costly or it could be just a o-ring. You will not know until you pin point the leak with the UV die. O-rings are cheap, but something like the AC condensor could be $500. If you saing that the you can hear it in the front of the engine, it could be the condensor which is the radiator looking piece in front of the radiator. You can see it through the front grill, that's the condensor. Like I said, pinpoint the leak and make decisions from there. Let me know how you make out with that. Good luck.

Posted on Sep 06, 2008

  • Phil Lovisek
    Phil Lovisek Sep 09, 2008

    Those pipes are power steering fluid pipes. They run in front of the condensor. The flowing air cools off the fluid in those lines. The condensor is right behind that pipe. It looks just like a radiator, when you look through the grill. Thats the condensor, right in front. Its most likely black in color or aluminium in color. Just like the radiator. Didi you get the die (can of R134) and the goggles with the black light??

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