Hi,

I have a MY95 STi RA. The car is now boiling like hell after I have driven it for a while. It starts to boil as soon as I park it. Temp is rising to 110 degrees, read from the PFC commander.

I have changed the coolant and had taken the radiator out some weeks ago. But I did not notice the boiling problem at that point. could it stil be air in the system?

when i drive the temp is 86 degrees. Both fans are working.
But I can't use the fan in the cabin of the car, as that doesnt work.
does anybody have any clues for this?

 

Could be thermostat sticking, I drilled a 5mm hole where the blow through hole is and it's been fine since

 

hmm, I shall be checking the themorstat tomorrow then. thanks.

 

I was just gunna cut the hole middle out but I thought I might need heating at some point

 

I changed the thermostat and it didn't get any better. so it must be either a blown headgasket or a leak somewhere? what do you think? I will pressure testing the cooling system and I will be measuring the CO level in the cooling tank.
but what about bad radiator? its a 95. I can feel that the lower hose is getting warm, so to thermostat is working. And I have been changing the water pump some weeks ago.

at normal driving speed its fine, but when I drive it hard, it boils.

 

Maybe an air lock? Did u fill up the cooling system thru the pipe that runs down to the turbo? I'd chech there isn't any gunk in the rad as well, iv seen sediment build up b4. Keep a check on ur fan, make sure it actualy works?

 

My m8s RA boils all the time and has done it for year's after a good drive , is all the rad getting hot, i had same symptom's and ended up being a blocked rad ?.

 

hmm, I think I will check teh radiator before I get the motor out.