Quote:
Originally Posted by brucepick
We don't know how they tested the thermostat. "Hey Larry, take this out and see if you get any heat!". Possible.
Use a ScanGauge or UltraGauge to show engine coolant temp digitally. You will see exactly what is going on. If driving with pretty steady load on engine (highway, 50-55 mph or more), you will see temp drop several degrees when tstat opens. And of course you'll see what temp it later stabilizes at.
Of course it will behave differently any time it idles, moving or still, and if you EOC.
Leave the cabin heat off for your tests. It bleeds heat off the system even if tstat is still closed.
If you didn't already, you might be able to hide some grill block where it won't easily be seen. But I'd never use grill block without a digital temp gauge always on display. Avoid nasty surprises that way.
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My Focus has a gauge cluster diag mode which has a digital thermometer. Usually on the way to work (on midly warm days), I can watch it build up to about 90, then drop down to 85C.
I did have a complete lower grille block in and it helped a lot. The problem is
1) on long highway trips, the car would not be able to coo itself properly ... but it was PERFECT for commuting to work.
2) I took it off to go back to the dealer for some work this week. It was too cold to