Hi all im new to this site and own a impreza sti type r 1997 555, the problam is the heaters inside the car blow hot air for about 30 sec then go cold which in this weather is crap. ive drained all the coolant out and put a new thermostat in and still no good apart from the 30 secs of heat being hotter then before lol. your help would be great. thanx all scoobynippa

 

mine flicks between cold and hot - best guess is air in the system, though I cant get any more water in/air out despite repeat atempts

 

Same here mate tryed and there dont seem to be any air left in.

 

any 1 help getting the flu lol

 

deffo sounds like and airlock!!!

i had mine refilled using a pressurised system, seemed to solve the problem a treat.