Can anyone shed any light on why this doesnt work?
Coolant temp sensor setup for my ZT...


Original EFI sensor, original t-peice that fed it when fitted to the inlet manifold.
Only seems to register up to about 50 degrees and when I removed the sensor to check there was water there nothing came out untill I cracked the header tank cap... This was with the engine running!
I thought water was pumped through the heater matrix all the time?!
Not a big deal as I can just fit a sensor to a waterway on the head but would of been easier this way!
lol


Original EFI sensor, original t-peice that fed it when fitted to the inlet manifold.
Only seems to register up to about 50 degrees and when I removed the sensor to check there was water there nothing came out untill I cracked the header tank cap... This was with the engine running!
I thought water was pumped through the heater matrix all the time?!
Not a big deal as I can just fit a sensor to a waterway on the head but would of been easier this way!
I think so yes and thinking about it, coming through the matrix will cool it and give me false temp readings anyway so not a good place for it!!
lol
Drilling the head is the way, just need to grab a sensor as the EFI one is huge!!
Yes I had thought of that but believe there to be no air in the system.
lolDrilling the head is the way, just need to grab a sensor as the EFI one is huge!!
Yes I had thought of that but believe there to be no air in the system.
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I have fittted a CVH stat housing! Doesnt have a CLT sensor in it though does it mate?!
lol
Anyway not a problem now, 20 mins fitting two sensors and job done
Anyway not a problem now, 20 mins fitting two sensors and job done

Last edited by Karlos G; Apr 5, 2012 at 01:06 PM.
Maybe, you can fit the efi water temp sensor on the same place that the fan switch goes on the CVH termostat housing with some kind of adapter.....
The problem is when the thermostat close....EFI sensor will no read the right water temp...
So the best place is to drill a new hole on the head....
The problem is when the thermostat close....EFI sensor will no read the right water temp...
So the best place is to drill a new hole on the head....
Oh didnt realise that! Handy to know!
Yeah thats no use!
lol
Maybe, you can fit the efi water temp sensor on the same place that the fan switch goes on the CVH termostat housing with some kind of adapter.....
The problem is when the thermostat close....EFI sensor will no read the right water temp...
So the best place is to drill a new hole on the head....
The problem is when the thermostat close....EFI sensor will no read the right water temp...
So the best place is to drill a new hole on the head....
lol
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