2.25 diesel high temp

My diesel runs close to the red on the temperature gauge. I've put a new thermostat in, flushed the radiator, new sender and still the gauge is in the red.

I had the bright idea (doh!) of measuring the temperature of the coolant at the top of the rad and found it to be 75 ish degrees.

Seems all good, but why's the gauge reading high.

Whats the core like on your radiator?

wrong temp sender fitted, will read high, very common

Wrong temp sender?

OK, which type do I need.

Part number 560794 is fitted (a couple of days ago).

Oil pressure is off the scale (high).

Is this a clue?

electrical sender type ?check system voltage ,voltage to guages from voltage stabiliser

Thanks Jamesmartin.

How do I check the stabiliser?

Do you have a part number, may as well change it if it is cheap enough.

has it got 10v on output side to guages ,12v on other + wires when running,cheap parts like new senders can be unfit for use