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I’m sure you guys will probably refer me to older threads as this seems like it’s a recurring problem with these cars but I might as well ask anyways.
Car has been overheating at idle. Has 97,600 miles on it. Goes all the way to Hot. Sometimes it fluctuates above half while I’m driving it. I’ve done the thermostat, changed hoses, coolant flush. No service engine lights on either. Both fans work.
Car drives normal. I’ve had a couple people suggest taking out the thermostat all together to see if that rectifies the issue.
Is it a genuine Nissan thermostat? Idk how Nissan rolls...but with Honda's, if you go with an aftermarket thermostat, you can be about 90% sure it will overheat.
Or maybe you've still got air in the system. Did you bleed it per the FSM?
I'm assuming you used a compatible coolant, mixed properly? I always use pre-mix because buying distilled water and mixing it like some sort of scientist is a hassle (you can't use tap water).
Is it a genuine Nissan thermostat? Idk how Nissan rolls...but with Honda's, if you go with an aftermarket thermostat, you can be about 90% sure it will overheat.
Or maybe you've still got air in the system. Did you bleed it per the FSM?
I'm assuming you used a compatible coolant, mixed properly? I always use pre-mix because buying distilled water and mixing it like some sort of scientist is a hassle (you can't use tap water).
Is the coolant leaking or "disappearing"?
No leaks, used the correct coolant, bled properly. The thermostat is actually duralast.
Is it a genuine Nissan thermostat? Idk how Nissan rolls...but with Honda's, if you go with an aftermarket thermostat, you can be about 90% sure it will overheat.
Or maybe you've still got air in the system. Did you bleed it per the FSM?
I'm assuming you used a compatible coolant, mixed properly? I always use pre-mix because buying distilled water and mixing it like some sort of scientist is a hassle (you can't use tap water).
Is the coolant leaking or "disappearing"?
thinking it’s the fan because the issue doesn’t happen while driving. It happens usually when car is idling
thinking it’s the fan because the issue doesn’t happen while driving. It happens usually when car is idling
Hookup your bluetooth odbii reader with torque to verify none of the sensors are reading incorrectly or soft-failing.
If it's that hot, you should hear the fan on full blast at idle. Given your recent overhauls, I bet it is a fan failure.
Hookup your bluetooth odbii reader with torque to verify none of the sensors are reading incorrectly or soft-failing.
If it's that hot, you should hear the fan on full blast at idle. Given your recent overhauls, I bet it is a fan failure.
now car isn’t accelerating and driving sluggish. This is a nightmare lol..
While driving at speed the fans typically will not come on as there is sufficient air flow across the radiator to dissipate heat. Alternatively, when the vehicle is not moving, the fans will come on- as needed- to move air across the radiator. When you are overheating, BOTH FANS should be running at FULL BLAST. It will be a loud roar.
Easy way to test the fans is to run the IPDM/er self-diagnostic function: IPDM/ER SELF TEST
In my case the fans were barely turning at all causing me to run hot when stopped at a red light, drive thru, etc.
While driving at speed the fans typically will not come on as there is sufficient air flow across the radiator to dissipate heat. Alternatively, when the vehicle is not moving, the fans will come on- as needed- to move air across the radiator. When you are overheating, BOTH FANS should be running at FULL BLAST. It will be a loud roar.
Easy way to test the fans is to run the IPDM/er self-diagnostic function: IPDM/ER SELF TEST
In my case the fans were barely turning at all causing me to run hot when stopped at a red light, drive thru, etc.
Quite sure it’s my fans. They come on when car is moving and when I idle the gauge always is going up now. Any recommendations on fans to use or only oem? Is Dorman acceptable?
...and the easiest way to test the fans, the fan control module, and the fan control relay is to run the IPDM/er self test that I mentioned in my previous post. If you just want to throw parts at it then ¯\_(ツ)_/¯
I’m sure you guys will probably refer me to older threads as this seems like it’s a recurring problem with these cars but I might as well ask anyways.
Car has been overheating at idle. Has 97,600 miles on it. Goes all the way to Hot. Sometimes it fluctuates above half while I’m driving it. I’ve done the thermostat, changed hoses, coolant flush. No service engine lights on either. Both fans work.
Car drives normal. I’ve had a couple people suggest taking out the thermostat all together to see if that rectifies the issue.
Have you followed the troubleshooting steps in the FSM
See page CO-7 for troubleshooting analysis.
Could be something simple like a defective radiator cap or a loose belt?
Or clogged radiator or a defective water pump and thermostat?
...and the easiest way to test the fans, the fan control module, and the fan control relay is to run the IPDM/er self test that I mentioned in my previous post. If you just want to throw parts at it then ¯\_(ツ)_/¯
Just my 10¢
haven’t gotten a chance to but my tech and I will go over that Saturday. Your advice isn’t going to be ignored lol
I had a 2010 G37 coupe and it did the exact same thing to me. I had to take off the radiator cap, run the car for a few minutes (yes, you will spill a little bit of coolant) and let some of the air bubbles work their way out.
This seems like a very common problem and I haven't seen a sure fire way of rectifying it. But that's the best way I found to DIY it without paying a shop to do basically the same thing. If you do take it to a shop, make sure it's a reputable one so you get your money's worth.
09-30-2020, 07:33 PM
