GTM stage 2 Air Conditioner Problem?
 

I had the kit installed at z1 and the day I picked it up we started to have this problem. If at idle or slowly driving around like in traffic if the temperature outside gets hot the ac starts to blow hot air and the compressor doesnt seem to kick on like normal. I have a 34 row oil cooler and vis vented hood and we took the drip pans off so the vents were open and it seemed to help but that was in georgia and winter began right after that. Well ive since installed a csf radiator trying to prepare for the heat and humidity down here in NEW ORLEANS. Well the outside temps are in the 100 range and the ac is blowing hot a heck. The oil and water temps are even better then stock. Theres enough freon in the system so theres no leak or leaks so I dont know what else too do? Any ideas?

bump anyone? GTM Help!

What is your refrigerant high and low side pressure?

I didn't really ask. I just know they are in spec.

When it starts if I idle with the hood up it warms up but the compressor stays on. Once I start to roll or idle with the hood down it kicks off. At night or once it cools down outside it blows cold as ice.

I have the same problem. I just chalked it up to the giant intercooler blocking the air flow when not moving. It works just fine when I am moving even just a little.

It only does it when it is really hot out. 90+

Yea but I'm in new Orleans were its hot all the time and it's my daily driver.

interesting post!

Very interesting thread! I have not had this problem. I have been driving in +/- 90 degree heat lately and have been ONLY turning on the AC when at a stop. No hot air for me...knock on wood.

As same had mentioned, double check your high and low pressure again. We've done a few TT stg2 kits and never seen this issue before... curious to know what seems to be the problem.

I'm having this exact issue and am taking it in to the dealership to have it looked at. It will blow hot if I'm waiting at an on-ramp light, when I accelerate, or if I leave it sit for a few minutes. It takes me five minutes fighting with it until it starts working again. Yesterday was over 110 and it was a nightmare. My oil temps stabilized at about 190-195 driving around and would get to about 215-220 idling. Water "dots" didn't move. I didn't feel like pulling out Cipher to log the exact temps. It is occurring more often when it's warmer.

How does one check this and what should it be?

I really dont think its the freon. My car did it before and now after a csf radiator. I wonder if theres some kind of thermostat or something thats reading the temps extremely high and kicking the compressor off? When its about 100 degrees out side my outside temp gauge reads like 110. Not sure if it has anything to do with it but just an idea.

Sub'd for more info, as i'm saving my $$$$$ to go GTM TT soon.

My car does this every so often usually in dead stop Miami traffic.

Wondering if its from the intercooler... or something specific to GTM's kit... guess il know soon enough!

Yep exactly. Its too hot and humid for this in louisiana. I even have a vented hood and aftermarket radiator and oil cooler and its still doing it. As long as im driving theres no problem. I try to drive around the mall or light traffic or anything like that then it blows hot. I can even hear the compressor not on because my idle is really low. When the compressor kicks on the idle usually kicks up a few rpms.

Is your radiator fan on or off when this happens?

I got a CSF radiator as well but stock hood. Its strange its so random.

sub'd I am not having issues so far. Mine MIGHT not be blowing as cold as before but it def is not blowing hot.

they must be on because the water temps are way down and stabilized.

Sounds like the AC compersor is shutting it self off so the car will not over heat, I know the car will run hotter with the AC on and the stock fans come on late 215 DEG. Try having the Fans turn on earlier, Like 185( UPREV) I had mine change a week or so ago and oil, trans and engine temps have been down alot.. I ran my ac for three days last week 100+ plus here and had no problems at all.

BTW oil and trans temps never above 185. :)

I have the fans coming on earlier through UPREV and it still happens.

Its 72 in Boston right now, its 92 in Miami. :inoutroflpuke:

try 99 and 102 with 95 percent humidity in new orleans. Like a sauna in this place lolol.

miami weather is similar tho. very tropicalish

wonder if it may need high output fans? Or mabe some kind of vents from the bottom of the car if its possible?

had the same problem with my customers gtm stage 1 10th anniversary , but it was 130
temps here , so i thought its because its hell here , seems alot of ppl are having the same issue , i built another customer an sts nismo , its not doing that but ac does get little hot or in other words not as cold as when ur on the highway or so but he blew his engine after 1000miles sweeet gtm stage 1 block parts on the way for him , so for sure its not a kits problem its an issue with these cars with going forced induction in hot weather they just dont tango along , i was hoping changing the fan setting will take the problem out , but as someone was sharing it still happens ,and i also thought a vented hood will solve the issue and someone else posted that it still happens , i guess along with the mentioned above ,oil cooler , and going with gtm biggest radiator and huge fans will fix this issue , if not then , these cars do not like being in 90+ plus weather period when blown, another brand new 2012 nismo greddy tt kit is on the way it has upgraded csf radiator , oil cooler on top of the stock oil cooler, fans tweaked to come on early ect ect ,i will keep u guys posted how it does in our 130f weather these days , but am sure it will have the same issue , if it did ill go an order gtm biggest radiator and fans as a last solution , if it doesnt fix the issue then no more tt z's to this part of the world till we find a solution .

Yea they certainly don't like the heat. What about putting a larger single fan in front of the radiator or mabe behind the intercooler? Man I have to get this fixed.

I know this won't fix the problem but these two things together couldn't hurt for a little extra oil cooling.

http://www.the370z.com/diy-section-d...e-1-nismo.html

http://www.the370z.com/diy-section-d...-air-flow.html

The greddy turbo oil pan works good too.

Plus it was 102deg today and sat in traffic on the way home and no issues.

Y'all are missing the point. The oil temps and water temps are better then stock. For instance 200 degree oil temp and water temp 3 dots left from the center and sitting in traffic the ac blows hot air. As soon as you going it still takes a few seconds before it starts to be cold again.

I know, i just thought i'd throw that in there.

And most of us with the problem is with turbo set ups. Thanks for the links tho. Anything helps.

I really hope you guys can get this problem worked out.

Me too. You live 40 mins from me you know this heat ain't playing lately lol

I know it's just stupid lately, i mean it's almost dark outside (8:10) and it's still 90*.. My house AC is set on 75 during the day and it kicks on around 10 am and doesn't shut off till 11 at night.

You have a loss of air flow across the condenser and the only thing that controls that is the A/C fan.

Talked to rob at z1. We are going to make a colder temp water thermostat. We're also going to take a mishimoto fan shroud and put some super high output fans. Didnt realize the fans on the vhr is the same on the de. They are crap.

I forgot to mention we used an upgraded thermostat well and. and it didn't work :shakes head and as I mentioned before this problem occured in our weather in 130f temps so we tried everything trust me guys the only thing left to consider is gtm big as% radiator and their biggest fans . Or atleast bigger fans , I tried meshimoto on other turbo cars here and they don't last much that's my expereince with them I like their radiator but to each his own , just trying to help since this problem was happening since 2010

Yea mishimoto thermostats are garbage so were going to use a nismo thermostat from the de 350z. We're going to use the fan shroud from the mishi Moto kit but were going to cut the holes to fit bigger fans and were going to use I think the name is sprall fans. One fan puts out twice as much cfm as both of our factory fans together. A bigger radiator may be a good fix but I already put a csf radiator and the temps are good with water and oil we need to get the air to start flowing to get the hot air between the intercooler and condenser moving while at idle.