I know this sounds completly stupid but does my thermostat in my 94 ZJ 5.2 go in with the spring facing the intake mainfold, or does the spring face up toward the hood. i am having a hell of a time assesing cooling issues. Also any adverse affects from running it with no thermostat for a little while to asses the cooling issues. Any input is greatly appreciated. I think previous owner messed this thing up.

 

Spring side goe's in the intake.

 

Thats the way I had it and I'm still having issues after the coolant flush, therm replace, new rad cap and system assesment. maybe I'm lookin at a major issue then?

 

you can run it without to see if there is any change

 

Get it warm and check for cold spots in the radiator.

 

Do cold spots equal clogs in the radiator, this thing sat for 4 months