themostat housing is on theright hand side of the engine cylinder head
its got 4 big pipes going into it , you can miss it ,
take of air filter box to make it a bit easier
3 bolts remove it and then your gonna have to go to renault to get a new gasket £2.50
check it 1st though , if when the van is noraml working temp (drive it for 10 mins), water is being pumped through back into the bottle then its OK
jase, January 2008