Overheating

[j_ros94]

Boosted brz engine temps started to rise today idk if its because of the ambient temps but it was fine until i turned the AC on. Didnt start to cool down till i parked it. Went as high as 75% mark on it probably higher if I didnt get home right away. Any suggestions or ideas as to what it might be?

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[j_ros94]

Or what i could do

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[x808drifter]

Car totaled.
Sell for scrap.

Being serious now...
Please tell me you checked all the normal things first before posting...

If you don't know what "all the normal things" refers to, please refer back to lines one and two.

[j_ros94]

Originally Posted by x808drifter

Car totaled.
Sell for scrap.

Being serious now...
Please tell me you checked all the normal things first before posting...

If you don't know what "all the normal things" refers to, please refer back to lines one and two.

Ive check for coolant leaks, coolant, bubbles whatever im thinking its just needs a new rad

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[OwlDance]

AC hotboxes the engine bay in a real bad way, even on stock. Pop the hood up with the AC on and you can pretty much feel the fans blowing hot air all over the bay. With a turbo it's probably not doing the radiator any favors. If there's nothing else wrong with your setup maybe vented hoods or a different radiator might be something worth looking into.

[humfrz]

Originally Posted by j_ros94

Ive check for coolant leaks, coolant, bubbles whatever im thinking its just needs a new rad

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Well, let's see now:

Has this happened before?

Do you have an OBDII instrument to measure coolant temp?

Is the system full of coolant?

Is the coolant of the proper mix?

Are the electric cooling fans working? (if not, check fuses)

Is the radiator clear of any debris?

The thermostat might be stuck?

If the car was older, the radiator could be clogged up (needed flushing)

If the car was even older, the radiator might have needed to be "rodded".

If your transportation was even older, maybe the horse needed water?

Let us know what you find out.


humfrz

[86MLR]

Without actually knowing the temp, you don't know if you really have a issue.

That gauge could be reading 100°c or 105°c or 115°c.

Get a proper temp gauge/reading for your oil and coolant.

I would say, going off your OEM gauge, that it is fine though.

OEM sweeping gauges are typically pretty average though.

[j_ros94]

Originally Posted by humfrz

Well, let's see now:



Has this happened before?



Do you have an OBDII instrument to measure coolant temp?



Is the system full of coolant?



Is the coolant of the proper mix?



Are the electric cooling fans working? (if not, check fuses)



Is the radiator clear of any debris?



The thermostat might be stuck?



If the car was older, the radiator could be clogged up (needed flushing)



If the car was even older, the radiator might have needed to be "rodded".



If your transportation was even older, maybe the horse needed water?



Let us know what you find out.





humfrz

No OBDII but coolant is full, got flushed today. I havent checked the thermostat. Decided to buy a new rad hoping it fixes the issue at first

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[Ultramaroon]

Unless you've been pissing in your reservoir there's no way anything's wrong with your radiator. Throwing away good money. Thermostats fail shut. Put it in a pot of water and measure temp while you heat it.


The temp gauge is bullshit. It goes to the middle and stays there until the engine is abnormally hot. Then it shoots up.

[humfrz]

Originally Posted by j_ros94

No OBDII but coolant is full, got flushed today. I havent checked the thermostat. Decided to buy a new rad hoping it fixes the issue at first

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DAMN, j_ros94, just because you get overheated once, you don't have to take an ice bath every time you break sweat -

So, you got the system flushed today? Before or after it overheated? If it overheated after the flush, maybe the system needs burping?

If you are bound and determined to buy something new, I suggest you buy a new thermostat before a new radiator.


humfrz

[j_ros94]

Originally Posted by humfrz

DAMN, j_ros94, just because you get overheated once, you don't have to take an ice bath every time you break sweat -

So, you got the system flushed today? Before or after it overheated? If it overheated after the flush, maybe the system needs burping?

If you are bound and determined to buy something new, I suggest you buy a new thermostat before a new radiator.


humfrz

Lol
Got the flush before it overheated

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[humfrz]

Originally Posted by Ultramaroon

Unless you've been pissing in your reservoir there's no way anything's wrong with your radiator. Throwing away good money. Thermostats fail shut. Put it in a pot of water and measure temp while you heat it.


The temp gauge is bullshit. It goes to the middle and stays there until the engine is abnormally hot. Then it shoots up.

Oh, that is soo old school -

OP, to clarify, get a large pan and put a couple of inches of cool water in it. Hang a candy thermometer into the water. Add three medium sized frogs. Turn up the heat until the water boils. Note the temperature that the thermostat opens (if it does).

If the frogs stay in the water till it boils, cut their legs off, add salt and pepper and enjoy some fresh frog legs -


humfrz

[humfrz]

Originally Posted by j_ros94

Lol
Got the flush before it overheated

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OK, maybe the cooling system has an air bubble (pocket) in it. See google for how to rid the cooling system of air (I don't remember - ). Maybe place the car front up on a steep hill, take off the radiator cap start the car and let it run and rock the car -


pa-pa humfrz

[Mr.ac]

Well not sure what can be the issue(s)
Worse case blown head gasket(s)
Bad radiator fan, or just not enough coolant
Bad water pump?

You can pressure test the radiator, and do a leak down test.
That's all I got.