I'm tired of people moaning about 4x4s being gas guzzling unnecesary 'chelsea tractors'. Some of us who live north of Watford need them! I live 1/2 a mile off the road up a 1 in 5 loose gravel and mud track (on the welsh borders). You can't get to our house without a 4x4. My solution is a 20...
Shorn don't despair! I just spent 3 days trying to sort out the same prob. I have had intermittant probs with our jimny losing water and boiling over. Tried various ploys in the past but I think I got it this time :D .
It seems to be down to the wrong Radiator Cap or it has weakened with age...