overheating during load

at about 70mph when i accelerate fully the temp gauge goes up and carrys on i let off when it gets near 3/4, can anyone help?

sensor on head is it actually over heating does it over heat on idle fan on ?


steve

no it doesnt overheat on idle, only when accelerating hard

are you running on pure water ??

noo its got coolant in it, it is very odd though its like the temp gauge is wired to the speedo or something, i'm guessing i have some wires crossed or something.

What would pure water cause

boils at 100c average running temps are 90c so wont take long for water to boil up if theres enough load


air lock ?? bled the system ?

isnt it pressurized? so the boiling point would be higher btw

its all bled up and its got coolant, im goin to check all the wires because i dont know if it could be a loose ground, the car doesnt overheat when its stood, the fan doesnt even kick in, cheers for your feedback every one.

ive been unplugging and checking, when i take out the drive for the speedo the temp goes to max, does anybody know why it would do that or is it a mystery?

To be on the safe side mate id get a inline temp sensor and a seperate guage?

is it just ur temp gauge playing up? or is it ur fuel and rev gauges aswell?

Mine was doing this (40secs on shows it better), both the fuel & temp gauges go right up and tacho does what it wants.

https://s1217.photobucket.com/albums/dd400/Ross_Almond/?action=view&current=CAM00061.mp4

turned out to be the earth on the back of the cluster

[img][/img]

that is exactly it! thankyou very much, time to whip the clocks out! cheers again mate!

no worries.

if u look on my photobucket there's pics of how i repaired it. or there's a how to thread on redlinegti, not easy to find took me about an hour just to find the thread.

sweet, i'll check it out.. ive got another set of clocks but its good to have spares!