This is with a Gtr101 sender, an 82 degree thermostat and a radiator header tank temp of 98 degrees (tested with inferred gun).
This is my issue of were the temperate gauge sits after 10 miles driving or 30 minis of idling in the garage. If I have to stop in traffic it goes a needles width higher and takes ages to return to ‘normal’.
It’s only a 84 standard 998, with cast manifold and pea shooter exhaust.
The fuel gauge is about as accurate as you can probably get for a mini and I’ve replaced the voltage regulator with a 10v electronic one a number of years ago. I'm getting a constant 9.8 volts as tested at the temp sender and fuel tank sender wires.
So far I’ve tried/ replaced either because they were old or to fix the issue. New gtr101 temp sender (old one just wasn't working/ would take ages to read above cold) new 88 thermostat, all new hoses, new heater matrix, new 3 core standard rad with fan switch, additional wiring and electric fan in inner wing, new radiator cap, new water pump, new 82 thermostat (tested and currently fitted and has made no difference) and the cooling system chemically flushed though 3 times. It’s also been treated to a new set of ht leads and spark plugs (all a lovely light tan colour after driving) and an oil change even though the old oil had only done 600 miles since being last changed.
I’ve also noticed the axillary electric fan doesn’t switch on its own (unsure if the sender in the rad is faulty) but turning it on manually it has no effect on the temperature gauge even though the radiator temp drops by 10 degrees.
And the only advice I got when I bought the replacement water pump (witch I think was overpriced) from the local independent motor factors was laughed at and “All old cars run hot/overheat”.
Edited by 1984mini25, Yesterday, 07:28 PM.