I Have Heat!
Today's activity was replacing my thermostat.
Having aqcuired the GQ Ecu that lets me use my scangauge, I know my car rarely gets over 75 deg c, and usually sits around 70.
bought the t-stat *groan* from the dealer, as I have a bit of an aversion to doing jobs like this twice, as well as the thermostat housing, just in case a 15 year old piece of plastic decided to crumble on me.
PS pump and bracket out of the way, the old stat was stuck nicely to the WP housing. Pried that off, and after Niagara-falls-o-G12 stopped, I removed the t-stat housing and elbow as an assembly, and tried to get them apart.
Getting the elbow out of the t-stat housing was the hardest part of the job. They were really stuck together. Once apart, (and knowing that the elbow would live to see another day) I put the housing, O-ring and t-stat up in position.
Not the easiest, as others have pointed out, as there is no real retaining groove for the o-ring (just a small lip) and the t-stat just sits precariously on the o-ring.
I found it easiest to get the three pieces (t-stat, o-ring, housing) close to in place, and use my pinky finger through the housing to push the t-stat up into its recess in the block (water pump housing). Holding the t-stat in place through the housing, I could then line up the housing and o-ring into position. 5 minutes and two fatigued arms later, everything was bolted up, and hoses re-attached. I filled the coolant before re-attaching the PS pump to make sure there weren't any leaks.
No leaks, and I now have real heat. The maiden test-drive saw temps up around 90c on average.
*Note* before and after, the coolant needle never moved - stuck right in the middle of the gauge.