I looked all over other forums including this one and found nothing so i need some help.

PLAY x PLAY for 2005 G35 Coupe Auto 36K Miles

1.Bought the car Aug 2I

2.Drove the car Around no problems -- A/C Works Fine And No over Heating.

3. 2 weeks ago decide to use the heat in the car and notice that it blows cold air whiles idling. Heat works great whiles driving.

4. Did research and found out the most common problem can be air in the system.

5. One week ago i performed a coolant flush, removed the air release and did everything properly. Still the same problem.

6. Infiniti Dealership did a Coolant flush Yesterday. Still the same problem.

7. I am beginning to think that the heater core is clogged. I also hear a water noise every time i start up and drive.


Has any ever changed the heater core or performed a back flush on the heat core?

I need advice. Thanks.

 

First, congrats on the car!

Only problem with some strong coolant flush products is as soon as they knock out the blockage, you have a leak!

And no, a simple drain and refill is not a flush! There are machines that heat and reverse flow the water/cleaning solution for a proper flush.

 

Thanks

So you are telling me that a dealer flush is just a "flush"?

There are strongers flushes for the cooling system?

 

help!

 

I have the same problem, it just started to happen!

 

Sounds like you may need a new thermostat, when they fail they fail open. as a result the coolant is always at full flow to the radiator so warming up the coolant enough to get some heat will be a problem and overheating won't be a problem. I would assume that they did check for this at the dealership.

If you had air bubble problems it would also be a overheating problem which will lead to much more problems.

Heater cores are very rarely replaced because of blockage, most are replaced because they leak caused by corrosion (Very old coolant).

 

I bleed the coolant lines and solved the problem!

 

Ok I have the same issue whe nthe car idles there is no heat pumping but when I start moving the heat starts. So I may just need to flush my coolant?

 

Just bleed the lines first.

 

YOU DO NOT HAVE TO BLEED LINES OR DO FLUSHES!!!
This is the problem with the car, the radiator during cold times stays low and improperly pulls from the reserve. Let your car sit over night and then open the radiator and then fill up the radiator directly to the brim. DON'T FILL THE RESERVE. What happens is when you fill the radiator, then turn the engine on it creates suction that pushes the airpocket into the reserve and out of the lines. You may have to try it again the next morning inorder to make sure the radiator is full to the brim. But after that, you will never have a problem again!!!! I'm going 2 weeks str8 with not even a hint of cold air at idle, damn near cooking my *** at a red light lol
Good Luck to all!!!!

 

Sounds like youre low on coolant, or they didnt put enough in it. This happened to my Discovery when it had a small leak through the water pump.

 

wtf is a discovery..

 

space shuttle of course... jk its a land rover... they call it an lr3 now i believe

 

Dude are you sure about this? I know some die hard mechanics who say to get the air out of the system you MUST bleed it!!

I like your way better, can we get a second on this procedure!?

 

my guess is also air in the system or a bad thermostat