Yea, I know. Just wanted to make sure that anyone dealing with a similar issue and searching in the future understands how thermostats work.
I've been to plenty of shops where the "master mechanic" tried to feed me BS lines similar to "there's not enough pressure to open the thermostat" that...
I’m concerned that they took you for your money if they tried to convince you that pressure opens your thermostat.
How thermostats operate is literally covered in a Lincoln Tech 101 level class. No thermostat in a passenger car operates under pressure.
Also I’ve never seen a 1fz-fe head EVER...
Just to correct this for you and to help anyone in the future
Pressure has nothing to do with opening a thermostat. At all. Period. If you were told that by a shop then you need to take your car to a different shop. Seriously.
You can take any thermostat and put it in a pan of water heat...
If you're in Wenatche then talk with Carl over at Nitro not only is he the owner of Nitro Gear but he's a great guy and big cruiser head. He can point you to a good shop.
I was actually just in wenatchee a couple of weeks back for a vacation uplake on Chelan. Freaking love it there, been...
All of the info you've provided does not sound like a proper diagnosis. It sounds like guessing, and you wouldn't be the first who was convinced there was an HG problem only to spend the money, tear into it and find out the HG was fine.
Has a leak down test been performed? This is an easy...