S13 Overheating Diagnosis Help

[Cesar240]

So I Recently replaced the radiator, the upper and lower hoses, and a couple other Hoses and every time I would install the thermostat the car would over heat. So without the thermostat it wouldn't overheat so I ran it a few weeks without it and it was running perfectly fine and now it's overheating again. What else could it possibly be? I also heard a high pitch whistle noise coming out from under the intake manifold. Any suggestions on what to look for? Thanks!

[cotbu]

Leak, blown gasket or just not sufficient cooling of the coolant, because no thermostat

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[grinevb]

have the same problem and I took out the t-stat aswell except It never overheated on me without it? Mine only overheats with it in and still can't figure it out.

[kruked]

You both still have air in the system.

[Atill93]

yeah make sure you bleed all the air out of the cooling system. you can also do a pressure test and check your compression to see if you have a blown head gasket. you're experiencing the same symptoms i had when i finally discovered my head gasket was blown :/

[sincity_sil80]

Mine is doing the same thing, but ive bled the system 4 times already. Have new POS radiator, new water pump, new hoses, and new thermostat, and its still running hot, after i bled the system today it ran cooler for longer but after a little while the temps start to rise again, any possibility air is somehow getting in or did i just not get it all out?
Btw, i have no coolant overflow tank, just a line routed under the passenger headlight temporarily.

[kruked]

Originally Posted by sincity_sil80

Btw, i have no coolant overflow tank, just a line routed under the passenger headlight temporarily.

Welp......

[boosted23]

Are yall using cheap waterpumps? Aftermarket cheap waterpumps have usually the wrong sized blades, they are usually shorter and fatter. Causes cooling issues

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