Strange coolant problem

[Craig]

Right my coolant seems to have a mind of its own. it's dropping low and sometimes emptying but I can't find wherits going to. The garage has had a look and is baffled. Any ideas where else it could be going so I can look?

Thanks

 

[Adam G]

You'll have to run it up to temp and see. Worth checking the expansion bottle for cracks and the cap for leaks. Otherwise you're just going to have to look for drips from hose joints or cracks in hoses etc

 

[Craig]

Ok mate cheers will check it all then go from there

 

[imprezaworks]

We have had three vauxhalls in work with the same issue. The problem was the expansion tank. Has very small hairline cracks letting the steam out when hot. Replaced and the issue went away. Makes sense especially with our cars being 10 year plus with the same bottle.

 

[flebay]

Check the thermostat housing were the pipe comes off they usually corrode under the hose and weep.
Also the oring seals inside the plastic hose ends to the heater matrix under the bonnet near the firewall can leak when up to temperature.

 

[Craig]

Thanks alot lads will have a look and investigate.

 

[bloke]

Get the cap tested first.

Had one last week that was doing similar thing and was a faulty cap, genuine Reno one and not that old either. Had a load of spare caps and tested five until I got one that was holding full pressure.

 

[mattf4r]

Get the cap tested first.

Had one last week that was doing similar thing and was a faulty cap, genuine Reno one and not that old either. Had a load of spare caps and tested five until I got one that was holding full pressure.

Thanks again Carl haha.

 

[Tony Hunter]

Just get it pressure tested, any garage should have a kit, even I have one.

 

[Craig]

Ok mate cheers I will do. Pain in the arse this car.

 

[imprezaworks]

You love it really and it's no biggie