bloody thing!

My scooby decided to over heat today

the top hose is getting hot, but the radiator isnt, nor is the bottom hose.

the heaters get hot

I suspect a blocked radiator or air lock, but has anyone got any suggestions?

Thanks!!!

 

hi yeah i would say you have an air lock in the system try getting rid of the air lock if unable to then try a new thermostat as they usually block water getting around the cooling system

 

i'd say thermostat as you should't just get an air lock unless you've emptied the system, even if you did they self bleed pretty well anyway

 

Also worth checking is the sides of the rad, sometimes they split due to being plastic, this expands to let the water out but then recedes, making the leak hard to find. Any watermarks on your splitter is a giveaway.

It happened to my MY97UK, new rads are about 50-60 pound.
Also its about 7.5 litre of water to refill this system.

 

bet it's headgaskets

 

Probably an airlock or blocked Rad. Take the top left hoses off. I had an overheating problem back in January. I fitted a new thermostat and the problem was still there. I took the bottom rad hose off...the problem was still there. I took the top 3 little rad hoses off and hey presto the sound of air escaping from the rad....problem solved.

 

Well i would have said the same thing here. either thermosat or air block.
Mine over heated the firstday but found to be cracked rad, but was all under warranty so no problems there on my 3rad now but only because the 3rd one is new due to front end accident.

Not sure if there is a bleed nipple on the top house as it enteres the engine cooling system (had one on my civic) try turning it slowly while engine is running if air then let it bleed to water comes out. If its just water then should be ok.

Also try a pressure test not sure if it would work if blocked but worth a shot

 

Its in the garage today to get looked at.

It is looking as its Thermostat. Rad isnt blocked as i flushed it through.

Thanks for your replies

 

The bleed tap is at the bottom on the left side if stood in front of the vehicle.
Fiddly to undo, i didnt bother, i just undone the 3 small hoses which connect to the header tank as mentioned. Makes filling up easier too.

 

Thought the same, worst case though. Had the same problem and went through the rad/stat/air route and turned out to be a gasket on the way out. Hope yours is an easier fix.

 

All fixed.

One of the small return pipes was blocked so there was nothing getting back to the header tank.

had the stat replaced as well so hopefully no trouble now!

 

Cheers Scoobz72 will have to have a look at that. At least i know what to do if i have top bleed the system one day.

 

Glad it was a cheap easy fix