Thermostat stuck shut?
How does one tell if the thermostat it stuck shut? There's been a lot of steam coming off of my engine (93 4.0L) lately, but it's really wet here (lots of "lakes" from melting snow)... well, after driving it long enough to get totally warm, I checked the radiator cap, not hot... opened it, no pressure and the antifreeze wasn't more than lukewarm. WHen I start the thing after it's been sitting for a while a big old cloud of steam comes off then it tapers back. This could be from water dripping down on something hot, but it comes rolling off as soon as the engine fires (fan blowing it around?)
The temp gauge reads abotu 210 when it's warmed up, which is where it's always been. The heater works.
Is the temp sensor in the engine or the radiator?
Last edited by Choff; 02-28-2004 at 11:06 PM.