I'm getting a P0125 code (insufficient coolant temp.) on my 2001 F150 5.4L.
I'm quite sure I just need to replace the thermostat as I understand these now stick open rather than closed when they fail.
How much ancillary infrastructure needs to be R/R for this process. Obviously I'd like to keep it to a minimum. It looks like the power steering fluid res. mount screws into the top of the thermostat housing, interesting. Will I need to remove the intake snorkel?
Any tips /tricks would be appreciated.
Thanks.

 

It was a piece of cake. Remove the intake bonnet, PS fluid reservoir bracket (that screws into the Thermostat housing), two (long) screws that hold down the housing, lift and separate. No need to remove upper rad. hose from housing neck. Replace thermostat (arrow-head up) and O-ring on housing. Replenish lost anti-freeze.
Moved on to my rear brake situation (squealing, groaning, stuck E-brake), now that was a royal PITA!
Thanks to tips from this forum though, I finally got the rotor off and cleaned things up enough to get back on the road.