Hi,
I've got a 2.8 1995 Hiace campervan and it's had a really annoying rattling noise behind the glove box when I'm driving on any road other than an extremely smooth one.
I managed to find the noise last weekend on my fifth try after 3 years of ripping things out and test runs so thought I'd share the info.
The attached photos below show the fan which is located behind the glovebox so the glovebox, plastic strip below the glovebox & speaker cover to the left of the glovebox need to be removed to get to this stage.
To remove the fan you have to take the 4 screws out that hold the console structure and then the 4 cross head screws that hold the fan and cable retainer.
Put your hand into the square air box and press upwards. On my van there is a layer of broken down insulation and the metal cover was lose. I managed to shove a load of cloth between the cover and the airbox which stopped the rattling - bit of bodge job but couldn't find another way of doing it. Peace at last...........well, apart from the other less slightly annoying rattles.
https://servimg.com/view/20438069/4
https://servimg.com/view/20438069/5