What should the temp. gauge read when the engine is warmed up? I think my thermostat may be stuck, heater doesn't really work at highway speeds but it does great in stop and go, makes me think the thermostat stays open all the time. I've never noticed that the heater didn't work well, but I rarely get to use it.


P.S.
I don't know how many have noticed, but spell checker no longer works.

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1985 300D Turbo ~225k
2000 F350 (Powerstroke) 4X4, SWB, CC, SRW, 6spd ~148k
1999 International 4900, DT466e (250hp/660 ft/lbs), Allison MD3060 ~73k