G35 Sedan V36 2007- 08 Discussion about the 2nd Generation G35 Sedan 2007 - 08

Coolant Temp Seems High

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Old Oct 16, 2019 | 04:26 PM
  #16  
FreshLikeAG's Avatar
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I don't think the temp should ever be over 210 F. The gauge on my scanner has a red line past 210
 
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Old Oct 16, 2019 | 04:55 PM
  #17  
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From: Alton / STL
Q50S AWD 3.7
Originally Posted by cleric670@gmail
Fans should definitely be at high speed by 214 F.

Perform the IPDM self-test and make sure your fans turn on. It's operation sequence 6 in the list of tests the IPDM will do, it will run the fans at 50% for 5 seconds then 100% for 5 seconds. This will verify the IPDM, relay, and fan motors all work properly.

FSM section PCS, page 10.

I just performed this test with my car. Everything functioned as it should. The fans blew low and high, plus all the other functions.
 
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Old Oct 16, 2019 | 04:56 PM
  #18  
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Then it's probably working fine, possibly your scanner isn't interpreting the temperature correctly, I know on the V35 platform the fans don't even turn on until 208 F.

EDIT: This is my suggestion since your temperature gauge on the dash has always displayed a NORMAL temperature and never risen above the mid point.

DOUBLE EDIT: I bet if you are at operating temp and get on a back road and do a couple full power runs up to about 90mph and then stop the vehicle those fans are probably running on high after a minute or so.
 
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Old Oct 16, 2019 | 05:24 PM
  #19  
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I will definitely try that all. Thanks
 
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Old Oct 16, 2019 | 05:26 PM
  #20  
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This is the app that tells me my current temp. As well as a lot of other stuff too.
 
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Old Oct 17, 2019 | 08:18 AM
  #21  
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G35x Base
Originally Posted by cleric670@gmail
EDIT: This is my suggestion since your temperature gauge on the dash has always displayed a NORMAL temperature and never risen above the mid point.
I take the needle reading with a grain of salt. My jeep had to get past 225 to notice the needle move past the middle, normal idle temp was right around 195.

I would say drive around for a while to warm it all up and then park it and let it idle until the fans kick on, then see what temp you're at. If may be a calibration issue with the reader that's making it read higher than the actual temp. If you have a temp gun or know somebody who does you could borrow it and take some readings on the coolant fittings to get an idea where the temp it actually at.
 
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Old Aug 18, 2022 | 06:59 PM
  #22  
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It's a 6speed manual sedan base model with some bolt ons
Check the water pump

Originally Posted by puddin"
i feel like we're having the same issue. I've checked for leaks too, i see nothing and my overflow tank is staying the same. soooo, IDK
mine is doing the same thing right now my fans are both working but mine does is more when the ac is on but without it it still does it but only when it is 90 degrees or higher it’s my coolant is full always no leak so it’s the therm, or water pump sometimes goes down when I hit the gas so I’m guessing water pump which on these are internal and expensive to change but I do want to do a few more tests before deciding that

215 is where is usually goes first normal is 203 then 209 then 215 then 219 at idle when driving goes to 239 before it jumps back down to normal then keeps going up and down I think it’s either sticky thermostats but most people start there and it does not fix it I think fan relay it’s not coming on at higher speed or water pump for sure
 
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Old Aug 19, 2022 | 09:26 AM
  #23  
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The V36 uses a fan speed controller not a relay like the V35.
 
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