Question about 2005 Infiniti G35

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Funny how the so called Techs at the dealership get all frantic when their diagnostic gadgets cannot solve a problem. It became borderline ridiculous when after six tries they had no solution to said overheating problem. They guessed and guessed and changed and changed with each change becoming more and more expensive, all to no avail.

I Went home and took a close look under my hood and with some 'actual human thought' put into how the system should work, did the following:

1. Checked my belts, both appeared slightly loose. Changed them myself and the overheating stopped. (Temperature still read slightly above mid point so I...
2. Changed my radiator cap. OH MY GOODNESS!! IT WORKED! IT WORKED! Car runs normal.
Now I have officially decided to kick the dealer service center to the curb and say GOOD BYE!

Posted on Oct 05, 2009

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Dirty radiator or faulty sensor.

Posted on Jul 02, 2009


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2003 Infiniti g35 coupe overheating, replaced radiator, thermostat, and cap, attempted to bleed.. still overheating.


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I have a 2004 Infinity G35 and it's overheating. What is causing the problem.

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2005 Infiniti G35 gauge reading hot and fan is running but car seems to be doing fine.

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2004 g35 over heating, just bought a new thremostat but still overheats only when i drive it

I think the OP was referring to an engine overheating issue only while driving. If you are certain there are no air pockets in the system and the thermostat has been bench tested to verify opening temperature then its possible This could be from a failed water pump. I believe those years had plastic impellers on the water pump. If that broke you are getting no coolant circulation even though the water pump appears to be turning via the accessory drive belt. Also verify there are no obstructions I.e. dirt, bugs etc clogging vital airflow over the radiator. Debris can also get stuck between the condenser and the radiator as well and hinder airflow. Also verify your fans are working even though you state its cool at idle. Good luck!

Jul 02, 2012 | 2004 Infiniti G35 Sport Coupe

1 Answer

I have a 04 g35 it ran our of gas and cut off now it wouldn't stay on

try replacing the fuel filter. it's not a good idea to run your car that low on gas , also you can hit the tank fuel tank with the palm of your hand this SOMETIMES jars the fuel pump and makes it work again..

Jun 14, 2012 | 2005 Infiniti G35

1 Answer

2006 g35 infiniti with 31,000 miles ran hot idling. What could this be?

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May 30, 2012 | 2006 Infiniti G35

2 Answers

AMy 2005 g35 is overheating and has no heat,new radiator waterpump and thermostat,what else can it be?

The passageways in the engine may be clogged, and/or the heater core may be clogged as well.
Also, check that the radiator fan is turning on when the engine gets hot or warm enough to trigger the fan.

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Jan 12, 2011 | 2005 Infiniti G35

1 Answer

Over heating

im not sure if the 2004 m45 is quite the same,but check the oil level in the pump resivore for the fan,if its the same then it has a hydralic fan.The resivore is located under the plastic cover between the engine and radiator closer to the drivers side and it looks like its for the power steering pump oil.It has 2 lines,1 goes to the radiator,or cooler in the front of the radiator,the other 1 goes to the fan .

May 09, 2009 | 2005 Infiniti G35

3 Answers


My 04 G35 is overheating. I have read forums on the issue. Everything from a gasket on the rad cap, to bleeding the system, flushing the system, to a new thermostat.
I took it to the dealer and they said the cap is ok, but there is a very small drip that they can not find. They refilled it and there was no problem.
Today, a week later, the temp gauge went almost to H and when I got home I looked under the hood and the antifreeze resevoir was empty!! I had no heat either, but this makes sense if their was no anti freeze.

Jun 07, 2008 | 2005 Infiniti G35

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