Stack Temperature Gauge Readout

[IROC]

I have a challenge with the readout of the temperature and I could use some advice.

 

Warm engine gives a readout of 87 C, lights on then 92 C, heater on then 98 C and then radio will then also start engine fan, as it get over 100 C in the display.

 

Good ideas? Experience?

 

Regards

 

Iroc

[dobbo]

Normally a bad earth either at the Stack or engine bay.  I'd suspect the Stack earth first.

 

EDIT - pretty common problem !

[Alex B]

That'll be a dodgy Earth at my guess.

One strap on the gear box and one in the front (s1) unsure where the second one is on an s2