ok its very easy actually, ive done it couple of times.
Look at the t-stat housing, it should be the metal part of the upper radiator hose that goes to the intake and has two screws one on each side of the metal housing.
Make sure you get a Ford t-stat b/c these t-stat have a lock proof, meaning if they ever mess up they will stay open so your car wont overheat. then also buy the gasket that goes along with the t-stat and some gasket sealant, you can buy the sealant at any auto parts store. Then take off the top rad hose and unscrew the two screws from the metal housing, take off the t-stat make sure you sand out the edges inside the housing where the old t-stat was at, b/c it might have sealant all over it and you want the t-stat to site in their right. then just put everything back the same way you took it off, make sure you look at the old t-stat before you take it off to see how its sitting meaning in what position its sitting in the housing. Put sealant inbetween the gasket and metal housing actually put it in both sides so theirs no leaks.
95- Cougar- SOLD (in loving memory)
Mods-17x9 cobra r's,H&R springs,KYB shocks & struts,removed air silencer,9"K&N cone,gutted cats,dual glasspack setup,cooling fan switch, B&M 24,000 tranny cooler.
Back in the game!!!
97 Lincoln Mark VIII LSC-opal opalescent with black interior, upgraded with a 98 tranny, 18x9 black saleen speedstars, LMS dual tip mufflers, 5% tints all around.