FJ40 Thermostat - Gasket Issue (1 Viewer)

[Bruce Miles]

Just had radiator recored & I reinstalled it on a 12/79 manufacture date FJ40. Ordered & rec'd new thermostat & "gasket". I thought I ordered the gasket for btw top & bottom halves of thermostat housing, but I was sent a smaller round washer that fits on top of the thermostat after you place it in the housing.

When I opened it all up, there was no old gasket on top of old thermostat. Is this a possible reason that the FJ ran pretty cold? Does anyone intentionally avoid using that gasket to make the rig run cooler? My temp gauge never reads over about 1/4 of the way toward hot.

Thanks in advance for any ideas.

 

[NOSAJ]

Yes that is probably why it runs cool. You need the gasket. Not sure if anyone runs it intentionally off.

 

[Bruce Miles]

Yes that is probably why it runs cool. You need the gasket. Not sure if anyone runs it intentionally off.

Thx for feedback. Will put it on & see what happens. Did you see my other post re: Capacitor grounded to engine ?

 

[3_puppies]

most likely a PO had no idea and just didn't install it, or never had it to install