Kept a very close eye on it today to and from work:
To Work:
first ~8 miles town and country consistent 20-40mph top of blue area ~1/6 of dial
next ~10 miles motorway consistent 70mph middle of blue area ~1/12 of dial
next ~3 miles town stop/start traffic around first white line ~1/3 of dial
From Work:
first ~3 miles town consistent 20-30mph top of blue are ~1/6 of dial
next ~10 miles motorway consistent 70mph middle of blue area ~1/12 of dial
next ~3 miles town consistent 20-30mph top of blue are ~1/6 of dial
And the heater is NOT working, kept it on 32°C and fan on full blast on dash vents - at ~1/12 there was very little heat, at ~1/6 it was warmer and at ~1/3 it was warm but no where near as hot as I think it should be.
So I guess it must be a dodgy thermostat!
So next question is:
What do I need to buy? I've checked a few websites and phoned a few local parts places and there basically seem to be two options, some places only offer the first and other offer both:
1) Thermostat "Kit" consisting of thermostat, housing & gasket ~£40
2) Thermostat inner ~£15 Thermostat gasket ~£1.50 Thermostat housing ~£10
Now obviously buying separately is cheaper but do I actually need the housing? Most of places which drilled down to my specific model only feature the kit whereas some model specific sites list all 4.
My car is an E39 2000 V plate 528i - do I need the housing or just the thermostat & gasket?
Sorry for such a long post and thanks for all you help!