Originally Posted by imidazol97
I find this an interesting problem.
The radiator itself is full.
The thermostat is in place with the wax cartridge toward the engine.
The thermostat housing has been bled of air.
The thermostat is inserted into the groove in the middle cut of the rubber gasket.
That does sound like it still needs a burp. Some air can stay trapped indefinitely, up in the stat housing.
My SE tends to nail the temperature and sticks. My SSEi and SSE both tended to do what you are talking about. But it had to do with the 180* stats. (both have the same sensor and dash gage, too FWIW). But after they got where they were warmed up for a while (10 min or so), they would peg at 185 or so. (I put my scanner on the temp, because the dash gage has proved to be a little wiggly.)
I stopped it dead in its tracks, but this is kinda' a last resort thing if the moving really bothers ya.
I tend to do things to the cars just "because". One day on a shopping visit to the yard, I happened on 2 aftermarket radiators which were the 3800 radiator frame size. "Cept they were near new, and had 1-1/4 inch aluminum cores. (Yeah, I know it'* probably cheap Chinese fab. But more and newer aluminum is cooler. Just don't monster torque them in, and don't strain the trans lines connections.)
Long story short. The thermal fidgeting stopped. It warms up, the stat opens, and the gage goes and sits in one place. My trans oil runs cooler during familiar conditions, too. i left the trans-cooler off of the SSEi.
1995 SE ..Green and Rattle Can...234K mi...Bonnie (she'll outlive me)
1998 SSEI .. White ..119K mi...Evey
1996 SSE ..MajTeal..157K mi...4/12- Dealer trade full of Lucas Trans fix