I recently got a 2004 G35 and had the problem with the temperature rising and air blowing warm while running A/C at idle. I found out it was the fan on the condenser side from reading a thread here. A $35 fan motor on amazon fixed the problem, but while I was searching for solutions I found this refrigerant called Hot Shot R414B and got a few cans.

I reclaimed the R134a and put in the Hot Shot today, and it's the coldest A/C I've ever felt by far. It's so cold I can't keep my hands against the vents without getting frost bite. It goes from 100 degrees inside to frigid almost instantly, and it stays cold and dry in econ mode. Best upgrade ever.

Old fan motor:



Hot Shot R414B:

 

Also, I'm new here. Hi.

 

Welcome aboard, and thanx for the tip!

 

Hey Cardood can you post a link where you got the fan motor? Think I am having the same problem. is it this one?

 

Yes. That's the exact one I got.

 

Cardood, welcome to the site! Strong first thread. Giving tips, links to get parts, and helping other Drivers that have this problem. Welcome to the site!

Keep us updated on the Hot Shot, interested to any long term reliability/effects.

Welcome!

 

I took some pictures of the broken fan motor and the Hot Shot I put in. I replaced my master and slave cylinders and clutch line while I was at it. It's like driving a totally different car now that I'm not overheating and struggling to put it in gear every time I stop. I also took the spring off my clutch pedal and can feel the engagement point now, which is nice.

http://imgur.com/EsfYilP
http://imgur.com/7IW70iN

 

It is awesome. Had it in for about a year now. It has been in the 90s almost every day for a while and it gets cold immediately when I crank my car. I can leave it on economy mode and it's still cold enough that I have to point the vents away from me after a while because it comes out so cold. I wish I had measured the temp at the vents before for comparison. Can't recommend this stuff enough.

 

Nice, I'm going to have to make the switch.

 

My stock, untouched factory 143a A/C puts out air at 40 degrees F. I actually drive around in summer with a thermometer in the vent

 

Its all the same stuff, when cars have to make the switch off of 134a some day it is going to be hotter in cars, but better for the environment :/.

 

i agree. great first thread.

 

Great info!

 

HFO-1234yf is coming. Stock up on 134A while you can. You'll probably need a license to purchase it once it gets phased out. I have the license and have a decent stockpile of R-12 (my Mustang uses it) and 134a


The problem with HotShot (ah yes, here comes the technical crap) is that it's a refrigerant blend that tends to separate inside the system, and different portions tend to leak out faster than others if the system does have a leak. Over time, that reduces the effectiveness. You can't top it off, you need to totally reclaim and dispose and then add new refridgerant from scratch.

Oh, also HotShot isn't approved for automotive use due to containing a little bit of propane in it. Most shops will probably send you packing if you tell them you have 414B in the system. Many can't reclaim it or recycle it anyway.

It does work quite well though, but you need to pay attention to the charge pressures and not overcharge. If you think about using this in your A/C system, do a little bit of homework first.

 

This is all good advice.