Well I never really drove my z in the cold and it's about 25℉. The heat is warm when driving but when I stop at a light it gets cold....

Is this common? It's highly annoying.

 

I suspect you have air in your cooling system. My heater works perfectly and I have never had a problem.

 

I have this issue every winter in my Jeep (along with low engine temp). I swap in a new thermostat yearly and it takes care of it. It's not too expensive, so it may be worth a shot

 

Don't change your thermostat. It is air bubbles in the heater core. My current Z had that exact scenario when I purchased it. Got the radiator flushed and the heat is fantastic at idle and driving for years now. That symptom of only warm when driving is the tell. Easy fix and you are good to go.

 

Fair enough, I was just mentioning the issue and solution I found in my Jeep.

The consensus seems to be an air bubble. Disregard my post, OP.

 

I would say something isn't right with your car. I've had no issues with my heat. I usually crank the temperature down (60 degree mark I believe?) so I don't roast..the heat works too well

 

Something's wrong with your car, like the above poster said purge your system to make sure there are absolutely no air bubbles. This can be a bit longer and harder than it sounds because some bubbles are really stubborn. Other then that the only other possibility is your heater core going bad.

 

Well it's always been like this since 30k miles. I'm now at 50k but that's my only issue.

I'm debating on trading it in next year. Just not as fin as it used to be and storing it every year is a pain.

I'll have my mechanic check out those bubbles next year! It's going away this weekend or so.

 

i need ac in my car it was 90 yesterday

 

i dont think i have ever really turned mine on... i just use the heated seats

 

Haha you guys are a riot.

Well the heat defaults to the air coming in from outside, maybe that is why it'd cold when I stop? When I try to have the heat only recirculate the ac turns on

 

I’m in Minnesota and drive my car in the winter. The heater is more than adequate and keeps me comfortable even in subzero temperatures.

Make certain that your coolant level is not low. If that is OK, then as others point out here, you need to bleed the air from the cooling system. The directions for this are on my350z.com (somewhere here).

--Spike

 

minnesota or minneSNOWta, my ex lives there and said there was a dusting of snow last week

 

Haha I tried to drive my z in snow with all season tires and it was horrible. I spun out and did a 180. Lol my beater is not bad and I could careless about the body.

 

^^ Don’t do that:
Please put your car in the garage… immediately!

All-season tires are not adequate when driving a high performance car in the winter.

If you drive the 350/370z in snow and on ice, you must have studless snow tires mounted on all four corners.

--Spike

 

here it is everyone up north is parking their cars, and it is 86 in dallas area today.

 

I disagree that you need dedicated snow tires. I live in Michigan and drive my Z year round. I run Michelin Pilot Sport A/S Sport Plus Tires and they perform great in summer and they hook up well in the winter. I like them so much that I won't even try another brand from here on out. Just saying you can make it work with one set of tires without giving anything up.

 

I see your point… But, consider this: When you get 6-9 inches of snow, and then the storm turns very cold, laying down a layer of ice… Are all-season tires adequate? NO!!

I’ve run both all-season tires and studless snow tires, and I can tell you for a fact that all-season tires are not adequate in deep snow, and all-season tires are marginal on ice. For hard-core winter driving in snow and on ice, you need studless snow tires... Period!

I’m a driver for over 50 years and have a lot of experience with tires and various conditions (on and off road, and various seasons) . My opinion is that all-season tires are marginal in significant snow and ice environments.

--Spike

 

I must say even on my beater i have noticed a huge difference when I had snow tires versus all seasons.

I had to sell them due to financial reasons but Ican't really think of driving the Z without snows... Where i live we get "lake effect snow" so powder all the time and the roads are never plowed.