Overheating 16v!

[lexstar8v 0]

My 1.8 16v corrado keeps overheating after even very short journeys. By that. I mean the coolent boils to such an extent it gushes out of the hole on the expansion tank. Which is normally covered by that black cover thingy. I don't seem to have any leaks from any of the rubber piping. Has anyone got any ideas?

thanks alex

[bcstudent 0]

Either your thermostat isn't opening, your water pump has expired, or the cap on the expansion tank has failed.

[mistrall 0]

yes i concour , also - is your water pump working??!!

[chubbybrown 0]

Check the rubber seal is actually sitting in the base of the cap in the right place,they are known to not seat right.

what temps is it showing.

 

I replaced the waterpump,thermostat along with G12 as a precaution and even I managed it.

I would also consider checking if the radiator is blocked.

 

I would also check the oil for water contamination

 

 

Roy

[Crasher 3]

As CB says, check the "O" ring inside the cap, especially if you have the earlier black cap. The modified replacements are blue.

[gaz1000 0]

i had same prob when head gaske was changed turned out to be the rad fan switch

[Henny 0]

check that the expansion tank hasn't cracked while you're replacing the cap... ;)

[lexstar8v 0]

Thanks guys turned out the O ring on the cap had gone along with the thermostat for the fan.