As I am getting closer to completion of dropping the f22b back in my Prelude here I am left with one spare plug, the EGR. Which is just fine with me, I expected that.

But, I got this here:


There are 3 plugs. They all fit the coolant sensor looking plugs. One is in the thermostat housing, one in the cylinder head and one from what it looks like fits on the from coolant housing which also has a coolant temperature sensor in it(at least the original one does).

I looked online and it looks like OG f22a only had two coolant sensors. . . . . .

Hmmmm, what gives?

 

what harness is that?

 

f22a engine harness

 

Are you using the IABs (black box with plug mounted to the bottom of the intake manifold) ?

 

Nope, nothing to plug it to.

 

OK, on my H23 the gray plug goes into the white plastic sensor in the middle-right of your of your pic that it is closest to. The green plugs go closer to the water inlet/outlet.

 

Cool, I kinda figured from the harness length but I just wanted to make sure.