Switched on the ignition only and the temp gauge went right off the dial so assuming it is the sender unit where is it on a 4x4 Sapphire Cossie, not that I have much chance of getting one over here but may be it cross references with a Mustang of Thunderbird or something like that as a sender is a sender aint it?

 

turbo side of the head at the front, single wire going to it, easy fix, 1/2 inch spanner and have the replacement in your hand ready to screw in as water will come out. if you lose lots of water dont forget to top up the header tank

edit to say MSD or matt lewis off here sells them

 

Carnt miss it fella its on the left hand side at the front on the turbo side as said above.

 

I aint got one there not even a wiring harness only going into alternator. Have got 3 at the back of the engine inlet side , one is ECT sender plus 2 more may be oil pressure and the other one might be temp. Is 4x4 (200 block) different from 2wd (205 block) as to where the sender is?

 

water temp gauge sender position :
2wd head - front turbo side of head
4x4 head - rear inlet side of head

 

didnt realise they differ from the 2wd to 4x4 heads

 

Thanks peeps.

 

As said 4wd is on the inlet side of head at rear in the little alloy bit that the heater pipe goes onto.
tabetha

 

sorry people i was thinking about a 2wd head ops

 

that's for the ECU not the gauge

 

gauge going straight to max. indicates a short circuit to earth. could be the sender, but also check the wiring has not been nipped anywhere

 

mine was like this; you could wiggle the sender and the insides were moving about freely - easy fix as said

 

Tried to pull the wire connector of and the sender came to bits Guess this is the problem but why oh why did they put the sender in first and then build the car around it!! What to take off first, oil filter, plenum chamber, inlet manifold or engine out got any ideas?????

 

Ya can get it out without taking any of that stuff off, its a bit tricky but just use a deep socket and extention bar etc.
Good luck regards steve.

 

Thats the ECT sensor mate and the gauge sender is above

 

Wot size socket is it, and I am good to go.

 

Think it is 13mm fella.

 

1/2 " i believe

 

Either 1/2 inch or 13mm should be ok as nearly same mate.

 

Thanks guys

 

Blantantly my new signature! haha


Back to subject, I have the same issue, gonna replace the sender, probs the problem. Thanks for the advice all.