bobby v
I'm Awesome
This is a follow up to thread I posted earlier
https://www.gmt400.com/threads/temp-sending-sensor-locations.49362/
Ok, I have since borrowed from my cuz a cool testing tool for coolant temps with the motor running, it consists of a radiator cap that has a rubber type plug that you insert a thermometer in to the small tight hole that looks like a meat thermometer, about 8" long.
I installed it and started the truck watching it thru its warm up till full operating temp with a/c on.
Wont bore you with all the different readings but in general there was about a 25' diference between my in cab gauge and the testing unit, which we seem to agree that its the location of the sending unit that causes this. At full read out it was 195' vs 220'
So heres my question, which temp should I believe is the true operating temp, the testing unit, or the sending unit (higher reading). I do believe that the sending unit being in the head and between two header primaries is picking up some of that heat thru transference.
Am I correct, what say you gurus. I sure don't want to blow a head gasket on my new motor
Thanks as always
Bobby V
PS There is a bung/port beside the coolant outlet in the intake manifold that I could move the sending unit to but would i only be fooling myself into believing a more favorable temp and ignoring the other one?????
https://www.gmt400.com/threads/temp-sending-sensor-locations.49362/
Ok, I have since borrowed from my cuz a cool testing tool for coolant temps with the motor running, it consists of a radiator cap that has a rubber type plug that you insert a thermometer in to the small tight hole that looks like a meat thermometer, about 8" long.
I installed it and started the truck watching it thru its warm up till full operating temp with a/c on.
Wont bore you with all the different readings but in general there was about a 25' diference between my in cab gauge and the testing unit, which we seem to agree that its the location of the sending unit that causes this. At full read out it was 195' vs 220'
So heres my question, which temp should I believe is the true operating temp, the testing unit, or the sending unit (higher reading). I do believe that the sending unit being in the head and between two header primaries is picking up some of that heat thru transference.
Am I correct, what say you gurus. I sure don't want to blow a head gasket on my new motor
Thanks as always
Bobby V
PS There is a bung/port beside the coolant outlet in the intake manifold that I could move the sending unit to but would i only be fooling myself into believing a more favorable temp and ignoring the other one?????
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