Addition of a radiator hose sensor temp adapter & coolant bleeding

[FutureFT86]

Hi everyone,

I am going to fit a water temperature sensor adapter in the radiator hose but I was wondering if it is necessary to bleed the coolant system afterwards or is it only necessary/recommended if you are replacing with new coolant? I would not be replacing the coolant, only adding the sensor adapter.

I have looked up the DIY but i have found some where the entire system is bleed and others where they simply open the cap and rev the engine with a filter to catch the excess coolant. is one method sufficient over the other for my purpose?

Any help would be appreciated.

Thanks,
Mike

[mike the snake]

Can you post pics or a link of your sensor adaptor?

I'm running a standalone and need to use a similar adaptor and sensor (can't use the OBD port for info or gauges).

[FutureFT86]

I used the Greddy 40mm adapter. But it was extremely difficult to attach to the hose. I would recommend using the 38mm adapter. I also completely drained my coolant and refilled and properly bleed the system .

[N1rve]

I would say no. But I would burp the system because during the install, you'll have to displace some of the coolant when installing the device into the hose. When you top off the coolant, there could be air bubbles. This isnt like a brake system where any brake work on the brakes require a bleeding of the system.

[FR-S Matt]

Originally Posted by N1rve

I would say no. But I would burp the system because during the install, you'll have to displace some of the coolant when installing the device into the hose. When you top off the coolant, there could be air bubbles. This isnt like a brake system where any brake work on the brakes require a bleeding of the system.

Isn't that just letting the heat run on full blast for a few? Not sure I see how else you can do it without some kind of bleed line. I just installed a radiator last night and let it run for about 5 min with the heat on full after filling it with coolant.

[N1rve]

Originally Posted by FR-S Matt

Isn't that just letting the heat run on full blast for a few? Not sure I see how else you can do it without some kind of bleed line. I just installed a radiator last night and let it run for about 5 min with the heat on full after filling it with coolant.

You let the car run with the radiator cap off with a funnel in it until the coolant in the funnel flows all through.

[FR-S Matt]

Originally Posted by N1rve

You let the car run with the radiator cap off with a funnel in it until the coolant in the funnel flows all through.

Does the bleed screw do the same thing pending the fluid in the radiator is full? I need to do this when I get home.

[N1rve]

Originally Posted by FR-S Matt

Does the bleed screw do the same thing pending the fluid in the radiator is full? I need to do this when I get home.

Yes. But I have no idea where the bleed screw is on this car LOL.

[FR-S Matt]

Originally Posted by N1rve

Yes. But I have no idea where the bleed screw is on this car LOL.

It's behind the intake manifold. There's a little plastic bleed screw to undo.

I just burped my system tonight, but there wasn't really any air in the system. Revved the engine till the fans kicked on. Let it sit, fluid didn't go down. Overflow is at its regular level. Don't hear any noise inside from the heater core when revving either, so all is well!

[HRTROB]

When I installed my coolant temp sensor on the upper hose, I siphoned the coolant from the radiator cap. I used a pump with a small hose and made sure it got all the way to the upper hose area. Way easier than having to drain coolant from the drain plug. Then I used a Lisle Spill-Free funnel to bleed the system.