Hello, does anyone know the thread spec for the coolant temp sensor located on the intake manifold?

Thanks!

 

Do you have one out of the vehicle ? I never see them list the thread size for sensors in the manual or on majestic Honda's parts site.

If you have a sensor out of the car go to a place that sells fasteners and see what size metric nut fits over the threads, even at Canadian tire.

 

Hey Joey, yah it's out of the vehicle. I suspect it's a BSPT thread. I'm trying to fit an aftermarket sensor in the stock location for a custom ecu.

 

Most of Honda's sensors do seem to be BSPT. You have to be careful because NPT appears to work, but won't get a good seal. I would do as JFusionsaid and take the sensor to a specialty fastener store like Fastenal.

 

Yep, no way I was gonna try screwing an npt sensor in there. Was gonna get a brass or stainless steel adapter for it.

 

I believe it's M10x1.25 (the same as fan switch on the radiator for pre-MY06)

 

Definitely not pipe thread.

I can post it later this morning...

 

I remember last time I worked with one it threaded in pretty easily by hand, it didn't feel like a pipe thread. I am always surprised this sensor doesn't use any sealant, o-ring or washer, yet it remains leak free.

 

use a M12x1.5 tap

 

Correct, 100%. The sensor seals with an oring at the base of the threads.