My 1995 SSE is running a little warm...
So, I replaced my UIM with a Dorman, and replaced the LIM gaskets with the upgraded aluminum ones last weekend. I also flushed the cooling system out and replaced the thermostat, cleaned the throttle body and all the sensors out, re-sealed the injectors, and replaced the plugs and wires (Delco wires and TR55 plugs). It runs really great, starts quicker than before (and with more authority!) and idles perfectly (buttah smoov, yo) but it seems to be running hotter than before. The thermo I used was a 195. I didn't drill it, but I tried to bleed the air out as best as I could. I'm not seeing any signs of air pockets. My mix is about 60% GM approved coolant.
Before, it would always hover around 200 degrees on the dial, occasionally going up to about 220 and then dropping back. Now, it seems to be pegged at 220, occasionally going a few degrees over, and then dropping back down to 200, and then going up again to stay at 220 for a while. Seems to be zero danger of it overheating.
Not a real big difference, but it is basically running 20 degrees hotter all the time, and I can't figure out why. Is this normal? Did I maybe have a cooler thermostat before? Help, as always, is appreciated.