My car is a 2005 G35X, sedan, 3.5 litre.
I went to Autozone, there are no codes displayed, everything seems to be okay.
After driving for a while, with the engine hot, I checked under the hood, and noted the following: the coolant in the reservoir is at the proper level, but cold. The upper radiator hose is hot, but the lower one is cold. Very little heat coming out of the vents with the heat turned all the way up.
The temp gauge spikes up close to the top but the car doesn't seem to be overheating. The gauge fluctuates up and down from center to top slowly but frequently.
Thursday, October 8th, 2009 AT 3:09 PM