[timrapp]

88 Z24 running about 240 degrees I am thinking it is the thermostat but not sure where the hell it is located? By the way it is a 2.8 v6.

 

[moonwell]

If it was stuck closed, this could happen. It is cheap, so go ahead and try that first. If it doesn't help, there are some other things you can check.

Here is the link again, that I already PM'd you with...
http://www.v6z24.com/mods/howto/?page=thermo

 

[hdunbar]

The HOW-TO section has a nice write up on thermostat replacement on 2.8