Car appreciation... the aesthetics, the engineering, etc

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Turkish in reply to @Nef

You may have also noticed that the engine temp would climb when stationary but drop when driving (which seems the opposite of what you’d expect)

Yep exactly this. Looks like its time to get on ebay and dig out the Haynes

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Nef in reply to @Turkish

Lifted off the web:

“Checking thermostat operation:

On some vehicle models, it’s easy to diagnose a thermostat.

Make sure the engine is cool.
Engage the parking brake.
Set the transmission to Park (automatic) or Neutral (manual).
Start and idle the engine.
Pop the hood open.
Remove the radiator cap.
Take a look though the radiator opening.

Coolant should not flow at this point until the engine begins to reach operating temperature, usually in about 15 to 20 minutes.
If coolant is flowing with the engine cool, the thermostat is stuck open and needs to be replaced.”

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Turkish in reply to @Nef

Dredge but I got round to doing this today. Fixed the problem perfectly, exactly the same way as yours. Now temp goes straight to 90 and stays there.

Just in time to sell it to my sister and pick up a new car tomorrow

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