is my coolant temp normal?

[USMCgetsome]

Temp outside was 89 degrees in south texas. I looked at the temp gauge and its a little over half way. Been there all this week. I just bought this car last week and i'm trying to research info about the temps but haven't seen any info.

[Poyzinous]

That is as perfect as you could possibly get. As long as it stays between halfway and 3/4, you're ok.

[pfarmer]

Temp outside was 89 degrees in south texas. I looked at the temp gauge and its a little over half way. Been there all this week. I just bought this car last week and i'm trying to research info about the temps but haven't seen any info.

To me it depends on where it has been running. Since you don't have any history if this worries you then I would think about taking the 'G's temperature and associate that with what you are seeing.

To me this looks perfectly normal but if its normal operating area is lets say around 30% and suddently it is 50% then it may be worth looking into while the temperature is double digits instead of triple digits which most likely will show up sometime soon.

Perry

[USMCgetsome]

thanks for the info perry

[tollboothwilley]

That is normal for hot temps.

Mine is normally at the line just under where your needle is at in the picture.

I just started running a little warm though...I'm still troubleshooting the issue. One thing that you can do if you are worried about running a little hot is buy some Redline Water Wetter. It helps with heat dissapation.

[USMCgetsome]

ok so i'm thinking of draining and checking the water pump and thermosat. My engine is at 107k mileage. Is this a difficult change?

[pfarmer]

ok so i'm thinking of draining and checking the water pump and thermosat. My engine is at 107k mileage. Is this a difficult change?

Thermostat is fairly easy, water pump is not so easy. As far as the water pump unless you have other issues such as seal leaks, etc. I would leave it alone. If you are in the area anyway then I would consider changing it. If you do make sure you get it from Infiniti as I have run into issues before where the impellers were different on the aftermarket ones and I don't mean for the better.

Perry

[USMCgetsome]

UPDATE:

Removed and Replaced thermostat and housing. Filled with 50/50 and 1 bottle of redline water wetter. Anything else i should do? It is still basically in the same position it was before? So i guess it normal. I'll get a pic of it today at running temps and it's been in the high 70's and mid 80's.

[pfarmer]

UPDATE:

Removed and Replaced thermostat and housing. Filled with 50/50 and 1 bottle of redline water wetter. Anything else i should do? It is still basically in the same position it was before? So i guess it normal. I'll get a pic of it today at running temps and it's been in the high 70's and mid 80's.

Remember to check the outside of the radiator as well. I forget if your has an electric fan but make sure it does come on. The one thing to also watch is temperature cycling. At steady loading the temperture should stay somewhat steady as well unless something else enters into the picture. You replaced the thermostat and that should not cycle, but I have seen electric fans that would come on and drive the temperature down and cause cycles.

The importance of that is it can indicate how well the rest of the system is functioning (how necessary is the fan in maintaining normal temps in moderate temperatures under steady load).

Did you ever get an accurate temp reading so you can match it with the gauge? To me your gauge position looks fairly normal but I have seen gauges way off.

Perry

[tollboothwilley]

Your temp is fine. If you start to notice the needle moving at all then you might have a cause for concern. But as long as your needle stays in the same location you are perfectly normal. BTW, the Redline water wetter is good stuff.

[pfarmer]

Your temp is fine. If you start to notice the needle moving at all then you might have a cause for concern. But as long as your needle stays in the same location you are perfectly normal. BTW, the Redline water wetter is good stuff.

His temp is fine as long as his gauge indication is accurate. I have seen many cars that were overheated with low temp readings and cars running cool with high temp indications. Chances are his reading indicates normal operating temperatures but we have no way of actually knowing this. If he is concerned, and since he went as far as he did, then it is a fairly easy test to confirm temperatures.

Perry

[tollboothwilley]

G35's are not known to have issues with temp readings, although the temp readings have been generally slow to react to overheating conditions sometimes.

Your temp is fine. Don't worry about it.

[pfarmer]

G35's are not known to have issues with temp readings, although the temp readings have been generally slow to react to overheating conditions sometimes.

Your temp is fine. Don't worry about it.

My temp is fine his may not be. If the temp readings are slow to react to overheating conditions then that is an indication that the readings may not be accurate. Slow to react gauges can indicate a sensor essentially running dry and giving an indication of the temp of the mounting device.

There are many things that can make a temp sensor in a car give less than accurate readings. Depending on the type of sensor it can be high resistance in the cable to it, the sensor itself, a fouled sensor from contaminates which acts to insulate it, even a faulty design of the sensor and its location. That is one reason why many go to a water hose adapter and put in after market sensors. They may cost but they eliminate much of the reasons stock sensors are less than ideal. It isn't even unusual for a quality car to have multiple sensors, one of which is the one you see the results of and often that one is the less sophisticated and least accurate of the bunch since it is not critical.

Another factor comes into play with these gauges and it is they are not linear. They are designed to give a certain reading at whatever is the norm. This may not be any more of a benefit then having a high/low/normal set of lights

If I had any doubts at all, I would not bother with thinking it is correct because someone who has not even seen my car says so, I would prove it which is actually very simple to do. My guess is his is normal, but that is simply my guess since I do not have physical access to his car.

So basically if the poster is worried and he seemed to be enough to take some measures to check it, then he should verify his indication. While you always should initially trust your indication you should always verify it if you have any doubts about its veracity.

Perry

[tollboothwilley]

Unnecessary though...He probably is new to the vehicle and was just making sure its normal with summer coming on.

[USMCgetsome]

i agree with above post. I'm a newb with this g35 chasis. I'm a 240sx guy. Anyhow, this is puzzling. I poured 1 bottle of antifreze coolant and 1 gallon of distilled water. Mixed with 1 bottle of redline water wetter.

So what puzzled me was that i removed only 1 and 1/4 gallon of coolant from the motor and installed the above quantity. But the radiator was always full. Which i find strange.

The fans come on. No i haven't gotten a true temp. Need to hit up the dealership and have them check my temps and fans.

[tollboothwilley]

Hrmm.. When I install a new T-stat with the drain of the radiator it lost about 1.5 gal.

Just watch the needle closely, it shouldn't really move. If its really hot might move half of a notch but nothing higher. The fans should both be on at that point and should keep it from climbing any higher.

[USMCgetsome]

the fans have been turning on but i have no clue about what temp kicks them over. Both electric. Is there something like nistune for our g35 03's. something to look at the basics and just see data from the odb port.

[pfarmer]

i agree with above post. I'm a newb with this g35 chasis. I'm a 240sx guy. Anyhow, this is puzzling. I poured 1 bottle of antifreze coolant and 1 gallon of distilled water. Mixed with 1 bottle of redline water wetter.

So what puzzled me was that i removed only 1 and 1/4 gallon of coolant from the motor and installed the above quantity. But the radiator was always full. Which i find strange.

The fans come on. No i haven't gotten a true temp. Need to hit up the dealership and have them check my temps and fans.

You could have had a 'bubble' in the system that you now have gotten rid of. The real importance of the fans is their necessity. If they are constantly running when under a steady load in moderate temps then there may be something to be concerned with. Typically they will come on at some predetermined temp and then go off at another temp in such a way that they have a deadband to work within.

If you see your temp gauge fluctuate this may be an indication of fan cycling. They start on a rising temp that maybe should not be occurring and they then drive that temp down at which point they shut off only to cycle once more. Your thermostat on the other hand will open at a certain temperature and then stay open. Your temperature then will then fluctuate based on loading in regard to themostat operation alone. In other words for a steady load it should not fluctuate excessively. I believe your normal temperature should not require much use of the fans to maintain it.

Perry