22R overheats with thermostat in
 

I'm back at it folks. I got 3 days after replacing headgasket and truck ran fine with no water lose or overheating problems. I put in a new thermostat and bam! within 15 minutes the temp hand started climbing. I really hoped it was a bubble and would clear when the t'stat opened, but it never did. When I shut it down the pressure was blowing out the reservoir. Anyone seen this engine run OK w/o t'stat but overheat with it in?

Thanks
T

a lot of aftermarket t-stats can be sticky, and not like to open. get a pot of water, and a thermometer, and test it on your stove.

are you sure you did'nt install it backwards?

Also check out the Rad. It could be plugged.

use the toyota t-stat on 4 crawler's page i just went through this

I Would Also Recommend Checking To See If Thermostat Was In Backwards....

Thanks for the replys. Here we go.
*Yep, installed correctly.
*New Radiator
*I'm going to drop the present t'stat into water on stove just for curiosity sake
*I just purchased a new t'stat from AutoZone that must be a 2 stage from the strange design.
*For now, I'll park the yota or use for short trips w/o the stat, then try the new stat when I can.

**I'll let you know
T