Cool down in hot temps:
#1
Cool down in hot temps:
Living in South Florida and driving in rush hour traffic really makes the radiator fan work over time when you shut down the engine. I noticed that when I get out of the car the fan is going like hell for a pretty long time. I found that when I shut down in my driveway wait a few seconds and restart the engine to move it into the garage, that few seconds seems to utilize the radiator flow to cool down more and the fan does not come back on.
Just a thing that I noticed.
Just a thing that I noticed.
#3
The fan will go into "rage mode" when :
The water temp sensor (yea there is one ...) is at or above 102 Celsius.
The computer is just trying to cool your coolant off PLUS your engine (cuz remember, once you turn it off, Coolant will NOT flow,)
The water temp sensor (yea there is one ...) is at or above 102 Celsius.
The computer is just trying to cool your coolant off PLUS your engine (cuz remember, once you turn it off, Coolant will NOT flow,)
#5
Yeah, let it run. The one thing you can do to help out is to run the last few miles gently before you stop the car. My longest fan run-ons happened when I ran the car hard in high temps all the way to where I stopped. Just a few miles of easy cruise will bleed off a lot of heat and do the job that the fan has to do otherwise.
#6
too bad for you, i guess.
i have my 8 garage parked, and cooled downed by a house fan on a timer.
easy fix to prolong the life of things under that hood when the motor is shut down and becomes a oven...
strikes me odd that you don't want a fan to come on after you shut off your car!
i have my 8 garage parked, and cooled downed by a house fan on a timer.
easy fix to prolong the life of things under that hood when the motor is shut down and becomes a oven...
strikes me odd that you don't want a fan to come on after you shut off your car!
#8
#9
I have this like pretty much every day starting may through october (fan on after engine turn off). I thought there was something wrong with the car, a messing wire or something, but i can see its normal now. Never thought the engine was smart enough to cool itself down after being turned off ;b
#11
Anyway, look at where the radiator will radiate heat if the fan is off and the car isn't moving -- right back into the engine bay. That accomplishes nothing.
I was surprised when my radiator fan kicked in while I was getting the mail yesterday after I parked my car. Never had a car do that before. Well, whatever, as long as it doesn't kill the battery.
#12
No, it won't. The convection will be going on at both ends of the coolant circuit, and the opposing pressures will cancel each other out.
Anyway, look at where the radiator will radiate heat if the fan is off and the car isn't moving -- right back into the engine bay. That accomplishes nothing.
I was surprised when my radiator fan kicked in while I was getting the mail yesterday after I parked my car. Never had a car do that before. Well, whatever, as long as it doesn't kill the battery.
Anyway, look at where the radiator will radiate heat if the fan is off and the car isn't moving -- right back into the engine bay. That accomplishes nothing.
I was surprised when my radiator fan kicked in while I was getting the mail yesterday after I parked my car. Never had a car do that before. Well, whatever, as long as it doesn't kill the battery.
#13
Rotary engines runs pretty hot, yes.
but it also cools down pretty quickly (compare to a piston engine)
#14
I've only had my car about 1-1/2 months, but I have never had the cooling fan come on after I shut the car.
My daily drive is around 35miles each way, with the last 2-3 miles being relatively slow backroads in both directions. Must be that last little bit that helps the car cool down.
My daily drive is around 35miles each way, with the last 2-3 miles being relatively slow backroads in both directions. Must be that last little bit that helps the car cool down.
#15
I've only had my car about 1-1/2 months, but I have never had the cooling fan come on after I shut the car.
My daily drive is around 35miles each way, with the last 2-3 miles being relatively slow backroads in both directions. Must be that last little bit that helps the car cool down.
My daily drive is around 35miles each way, with the last 2-3 miles being relatively slow backroads in both directions. Must be that last little bit that helps the car cool down.
At first, I feared there was something wrong with my car....but glad to see it is a normal cool down feature of the RX8.
#16
If your concerned with your engine temps I'd suggest reading some of the DIY's on here. There's a few like the throttle body bypass, a mod for better oil cooler air flow, etc. I even went and did what most ricers around my town do. Lift my hood about 2" from the hinges so as to let heat from the engine bay exit. Also no engine cover. Get's considerable hotter with headers on.
#17
I've only had my car about 1-1/2 months, but I have never had the cooling fan come on after I shut the car.
My daily drive is around 35miles each way, with the last 2-3 miles being relatively slow backroads in both directions. Must be that last little bit that helps the car cool down.
My daily drive is around 35miles each way, with the last 2-3 miles being relatively slow backroads in both directions. Must be that last little bit that helps the car cool down.
you live in new jersey, notice the rest of us are in Fl and Cali
#18
^...............Jerseys get pretty freakin hot and muggy trust me.
Anyway, let the fan run. When I pull into my garage, I usually just pop the hood to let the hot air out to speed cooling. If the fan is running at that point, it will usually shut off a little bit sooner. I too have a house fan mounted upside down on the garage ceiling that blows past the engine bay. Don't always turn that on, but I do open the hood. I have dampers so no prop stick......making it just a wee bit easier, not that it would be that difficult the other way!
Anyway, let the fan run. When I pull into my garage, I usually just pop the hood to let the hot air out to speed cooling. If the fan is running at that point, it will usually shut off a little bit sooner. I too have a house fan mounted upside down on the garage ceiling that blows past the engine bay. Don't always turn that on, but I do open the hood. I have dampers so no prop stick......making it just a wee bit easier, not that it would be that difficult the other way!
Last edited by Mazurfer; 06-25-2010 at 03:14 PM.
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