A/C Evaporator is leaking

[Q45man1]

For the last 2-3 weeks my A/C has blowing warm air. I set the temp at 65 and let it run 10-15 minutes but still getting warm air. I took it to the shop and found out that it has small leak in the evaporator.

I called Joe to order the evaporator assembly and to my surprise it's no longer available. The water inlet and expansion valve are still available but the core is discontinued.

My only hope is go get the core from the junkyard (which I'm not sure if it's working properly). Ebay is the other option. Joe has provided the p/n to make sure I'll get the right part. Part number 27280-67U02 is the right core with start production date of 2/93 - will fit 94-96.

For now I had the shop charge my A/C and so far it's working. But for sure it's not going to last. Right now I'm hunting for the core. Is the evaporator disassembly easy? Any special tools required?

Thanks...

[qship96]

Go brand new aftermarket before old used possibly failed/soon to fail OEM from junkyard, ebay etc.

Search http://www.ackits.com and other a/c parts suppliers online......should be a few evaporator cores available to fit in the Q perfectly

Shame on Nissan for discontinuing such a crutial part that soon.Guess they dont understand the importance of creating a legacy brand by keeping the g50 on the road for as long as possible to show the public how durable their cars are?

[Q451990]

Shame on Nissan for discontinuing such a crutial part that soon.Guess they dont understand the importance of creating a legacy brand by keeping the g50 on the road for as long as possible to show the public how durable their cars are?

I agree, but sadly the majority of G50s I see on the road are no testament to a fine car brand... I think we're seeing the end of the "golden era" of G50 ownership in terms of parts availibility...

Heath

[3Q Jay]

Percy- i haven't done this on either G50, but the evap is about the most buried thing in the dash that i can tell. i think it would be a truckload of work to get it out. that said, how did the 'shop' ascertain that the evap is leaking? sure it's not a connection as opposed to the core itself? i've not heard of evap cores spontaneiusly leaking.

Heath- I'ts been a few months since i've ordered anything from IoS, and for sure prices have gone up a lot in the last few years, but i must say that to date i have not needed one thing (and Joe or any of the IoS guys can tell you that i have ordered some extremely obscure pieces) that has been tagged as obsolete. backorder--sure. and even waited 2 months for a few active related things---but they have always come thru.

[Q45tech]

One uses a halogen gas [R12/R134a] detector to sniff the air vents on slow speed, then when the evap is actually disassembled on the bench you see the massive oil leaks and sticky dirt that points out the leak points.The gas may dissolve in drain water and the dripping drain can also be checked for gas.

You must recharge the system to get enough gas pressure to read then quickly vacuum and recover to avoid loosing too much [cost] of diagnosis.

Diagnosis should take no more than 1 hour of diligent work and minimal materials cost [lost gas].

Evaporator leaks are caused by owner abuse. Failure to change compressor oil and dryer allowing it to turn acidic, eating thru a weak spot where a fin is welded to a tube.

The expansion valve and any connections are encased in a asphalt sealant pad so you can see if that is a leak point instead of fins.

We change > 85 evaporators per year over the 3 shops based on age evenly divided between Lexus and Infiniti. They pile up for the junk man.

Only takes ~~ 5 hours.

After 10 years not uncommon to replace $1500 worth of parts and $1000 worth of labor.

Just a tiny part of $3,000 per year total cost to maintain and repair.

After 18.5 years the evap is the only as built component remaining: 4 dryers with pressure sensors, 2 compressors, 2 sets of flex hoses, and 1 condenser. I tend to vacuum and weigh charge every 2 years.

New compressor lasted 140k, remans about 80k each.

[jtesensky]

Heath- I'ts been a few months since i've ordered anything from IoS, and for sure prices have gone up a lot in the last few years, but i must say that to date i have not needed one thing (and Joe or any of the IoS guys can tell you that i have ordered some extremely obscure pieces) that has been tagged as obsolete. backorder--sure. and even waited 2 months for a few active related things---but they have always come thru.

It's becoming more & more common with the G50...

[Q45man1]

Thanks guys.

Jay... I took it to the Infiniti dealership and I spoke with the master tech (also own a G50) who service my cars. But I'll try to look into it this weekend. I ended up buying the engine mount from Joe and have scheduled it for installation this weekend.