Title should read AC Condenser and expansion VALVE question...... For some reason I was thinking of an orifice tube which our cars don't have and mixed the two together.

I recently bought a 2007 G35 and the a/c system was not working. I replaced the compressor, and took the old one apart to find the insides all mangled up and looked like a bomb went off. there were metal shaving everywhere in the compressor so im assuming:

1) The lines need to be cleaned (taking to a shop)

2) I'm going to have an ac shop clean the lines and clean the expansion valve. (has anyone had success doing this with the valve?) I would rather not have to replace the valve and just have them try and clean it (run fluid and air through it) because its under the dash and seems like a PITA to get to i tried and stopped where you have to take the radio and nav out. (i've looked an could not find anything on taking one out on the forums, user error most likely)

3.1) The Condenser... After speaking to the ac shop and doing my research, the condenser seems to be a parallel flow which means you can't effectively clean it due to the cleaning air/fluid taking different routes in the cleaning process and leaving blockages and metal in the system. Can you clean it has anyone had success?

3.2) 2007 & 2008 G35 Sedan Condenser anyone searching or needing a new one please learn from my mistake, you have the radiator & condenser combo like a g37 not like the older g35's which were two pieces, our are one unit.


I'm at the point where I have a new rad/cond combo shipped on the way cheap $180 ebay model, once I get that installed (if i cant clean it) I'm going to take the car to a a/c shop and have them clean the lines and expansion valve, then I will recharge my system and enjoy Florida like you should in the a/c

 

It's not really the end of the world removing the entire front dash section of a G to get to the AC unit. It's just a LOT of stuff to take apart, check out a specific DIY radio replacement and you're nearly halfway through the process and the crappiest part is done. The FSM has good directions for the rest but with limited pictures.

http://www.nicoclub.com/archives/infiniti-g35-g37-factory-service-manuals.html

 

I know it’s been a while since you posted this. But I’m having a hard time trying to find this same part for my ‘07 g35 sedan. Do you still have the link? Or part number?

 

V36 G35 and G37 look like they use the same expansion valve. You can get them on ebay pretty cheap.

One lesson you will learn on AC is if something fails like a compressor and garbage is sent through the whole system you pull every component off and replace the Orings, drier, expansion valve, and compressor. The lines, condenser and evaporator can be cleaned with no rinse coil cleaner and air compressor. Trying it any other way is a real gamble and if there are any contaminants still in the system it will destroy the compressor again. I've been there and done it both ways and learned the hard way that there is no easy way out. It 's not a fun job and that's why it cost so much to do, it's extremely labor intensive and takes special equipment to repair. DIY price isn't bad if you don't count hours of labor, I did our 00' SR20 Sentra for about $200 in parts including a rebuilt compressor and I spent 2 days working on it. Would have been over $1000 to have a shop do it.

Also if you ever take it to a shop to have the AC worked on don't just take it anywhere. There are a lot of shady shops that have guys working on stuff that aren't certified (totally illegal in a automotive business) and usually will have you coming back every 1-6 months. Bought my brothers 08' G35x cheap because of this. They guy had it to 2 shops and spent close to $2000 and still had no AC and we fixed it for less than $1. I'm really lucky that I have been able to learn from my brother over the years because he is a certified HVAC guy that has worked on industrial refrigeration equipment for over 20 years.