My temperature gauge goes from being about halfway, to just out of the red when i turn my lights on, if i turn them off it drops back to halfway.
(talking about my turbo cabby BTW!)

I'm thiking bad earth maybe but has anyone else had this?

 

i think you have a dodgy earth mate

 

Thats what i'm thinking but where do i look??

 

look for every black wire you can find attached to the chassis.lol
mine was the engine earth strap near the gearbox, re did that and the temp gauge worked fine

 

LOL yeah that should do it!!!

 

My rev counter used to go up and down when i put the windows up full

 

my fuel gauge goes down when the lights are on the speedo has stopped and the temp gauge has a mind of its own so think ur self lucky mate lol

 

hahaha yeah i think i am lucky!!!
But seriously a working temp gauge is very important on an RS, specially when your booting it around!
Time to re-earth the entire car i think!!

 

im going to do away with the shite electric one and put some cappilary gauges in much more reliable

 

Yeah could probably use the same sensor aswell!! Not a bad idea!!

 

i've had this on mine too! changed the earth wires in the engine bay, the power leads to the starter and alternater, the main feed in to the fuse box from the battery not had any trouble since...