So, I FINALLY installed the ECT probe for my 4th gauge this evening. For a year, I'd been contemplating where to put it. I could've put it up by the coolant filter, but I don't have it filtering all the time so I wouldn't always get a reading up there. So on the port on the side of the pump, same issue, not always flowing to filter.
I wanted to put it with the OEM sensor, but there wasn't much room next to the thermo housing. So today, I finally realized what to do. Just extend the height of the sensors. I'll show you.
First I drained the coolant.
Not sure how much exactly, but it seemed like 5 gals or 6.
Took a 3/4" wrench on the drain for the radiator and the same size, just shorter wrench for the OEM sensor on top of the pump.
Then I added my little contraption. A 4" pipe nipple and 3/8"NPT tee at the top for two probes.
And of course my wiring. It's never the neatest, but it works and won't be damaged.
Now my problem is I have an air bubble at the top of that stand pipe.
I even had the top probe off till i got coolant up to the top of the pipe but there must've been more air in there so I'm gonna drive it a while until I'm tired of hoping the air comes out, which I don't think it will. I'll probably just wind up leaving all the coolant in and pulling out the top probe, plugging the hole real quick, retefloning the probe, and putting it back in to ensure there's no more air up there or any in the system that can get in it.