when warm and at normal motorway speeds, temp guage is in its normal place( ie just below half way ) (not on the right for those quick witted folks!!)

when i speed up to around 80 -100mph the guage drops to about 1/4 then down to c, when i slow down to 70 it returns to its normal postion

someone at work said it could be thermastat, any ideas??????

 

WHAT A MUPPET!!!! sorry car is a 95 legacy gt auto

 

Now this gets a little bit odder,

whilst titing aroung at work to today, i revved the engine to approx 6000rpm when stationary ant the temp gauge did the same thing dropped to about 1/4 on the gauge and then down to c and the back to normal!!

help please

 

sounds abit odd this 1 but it could be the temp sender as it sounds like when the rev's pick up and the water pump starts to move the water at an increased rate the sender sends a false reading

 

THANKYOU

is this easy to sort/fix/ get at??

 

its down the back of the manifold on the drivers side on the cross over pipe on the block mate,can be abit tricky but with patience and quater turns of an open ended spanner you'll get there lol.