High Coolant Temp But NOT Overheating
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Infiniti G35x
High Coolant Temp But NOT Overheating
Please forgive me for how long this is going to be.
Okay so I have a 05 G35x 103k
So I figured I had a problem when my fans would kick on high after driving for a little while and staying on high for a long period of time.
I started to monitor my temps with a scanner and my car was reaching around 215 with fans on high on relatively cool days. So I would let the car idle after a drive (fans still on high) and temps barely move at all if they do it cools very slowly.
This issue was happening before any work was done.
I replaced the thermostat (motorad), coolant temp sensor, coolant was flushed, and new radiator cap and I bled the system multiple times with a spill free funnel. I’ve bleed it to the point on me revving it to 3k I didn’t see no activity in the funnel. So I’m about 98% sure it’s bled.
HERE IS THE KICKER!
So when I was bleeding the system it’s like just about everything was going great. Coolant reached 208 fans kicked on low and temp dropped almost instantly to 195. I can confirm both top and bottom radiator hose was hot. Everything seems to be flowing just fine. Only 1 issue I noticed was when both fans were on (low I think) the passenger fans seem to be moving a little slower then the other one.
So i decide to take it on a drive when I’m done bleeding. So after a drive temp reaches around 215 AGAIN. I opened the hood both fans running on highboth seem to be going the exact same speed but I felt the bottom radiator hose and it was cool.
I’m so confused everything seems to be flowing fine when bleeding but coolant temps stay high after some driving?
This has been driving me INSANE. Please any advice or tips will be greatly appreciated thanks!!!
Okay so I have a 05 G35x 103k
So I figured I had a problem when my fans would kick on high after driving for a little while and staying on high for a long period of time.
I started to monitor my temps with a scanner and my car was reaching around 215 with fans on high on relatively cool days. So I would let the car idle after a drive (fans still on high) and temps barely move at all if they do it cools very slowly.
This issue was happening before any work was done.
I replaced the thermostat (motorad), coolant temp sensor, coolant was flushed, and new radiator cap and I bled the system multiple times with a spill free funnel. I’ve bleed it to the point on me revving it to 3k I didn’t see no activity in the funnel. So I’m about 98% sure it’s bled.
HERE IS THE KICKER!
So when I was bleeding the system it’s like just about everything was going great. Coolant reached 208 fans kicked on low and temp dropped almost instantly to 195. I can confirm both top and bottom radiator hose was hot. Everything seems to be flowing just fine. Only 1 issue I noticed was when both fans were on (low I think) the passenger fans seem to be moving a little slower then the other one.
So i decide to take it on a drive when I’m done bleeding. So after a drive temp reaches around 215 AGAIN. I opened the hood both fans running on highboth seem to be going the exact same speed but I felt the bottom radiator hose and it was cool.
I’m so confused everything seems to be flowing fine when bleeding but coolant temps stay high after some driving?
This has been driving me INSANE. Please any advice or tips will be greatly appreciated thanks!!!
Last edited by Urbanengineer; Apr 10, 2023 at 11:06 AM.
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Joined: May 2017
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From: Washington State
Coupe 6MT Premium RAS
Replied to your other thread but if your bottom radiator hose was cool at that temp then you DO have air trapped in the system.
Get the car up to operating temp, drive about 35mph then slam on the brakes HARD, trigger your ABS. This throws the weight of the water forward into the thermostat housing and displaces bubbles pretty effectively.
Sometimes you have to full throttle accelerate from a stop then slam on the brakes to rock the water back and forth a couple times.
Get the car up to operating temp, drive about 35mph then slam on the brakes HARD, trigger your ABS. This throws the weight of the water forward into the thermostat housing and displaces bubbles pretty effectively.
Sometimes you have to full throttle accelerate from a stop then slam on the brakes to rock the water back and forth a couple times.
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