grandprix104 Posted October 12, 2003 Report Share Posted October 12, 2003 #1 How on earth do you drain the coolant out of a 3100? I cant find a drain plug anywhere cause the lower frame piece is in the way. #2 How difficult is it to replace the t-stat? Can someone give me a full procedure. Thanks Quote Link to comment Share on other sites More sharing options...
Aaron Posted October 12, 2003 Report Share Posted October 12, 2003 i could help on #2 if you had a 3.4, but you dont. sucks for you! Quote Link to comment Share on other sites More sharing options...
cutlassdude96 Posted October 12, 2003 Report Share Posted October 12, 2003 its on the bottem corner below the upper rad. hose Quote Link to comment Share on other sites More sharing options...
grandprix104 Posted October 12, 2003 Author Report Share Posted October 12, 2003 Eureka! I dont know why i didnt see that the first ten times i was under the car! How about the T-stat? Anybody done it? Quote Link to comment Share on other sites More sharing options...
91GranSport Posted October 12, 2003 Report Share Posted October 12, 2003 The thermostat will take you 10 minutes to replace. Just pop off the thermostat housing, remove the old thermostat and plop a new one in. You can use the gasket that came with the new thermostat or you can use special high-heat silicone on the thermostat housing. Either way, just pop the thermostat housing back on and tighten the two bolts. Some people mention that you should drain your rad a bit before doing this, but I don't bother. You shouldn't have a problem either, since you're already changing the fluid. Quote Link to comment Share on other sites More sharing options...
Robby1870 Posted October 12, 2003 Report Share Posted October 12, 2003 3100 T-stat is MUCH harder to get than the 3.1L Quote Link to comment Share on other sites More sharing options...
89oldscutlass Posted October 12, 2003 Report Share Posted October 12, 2003 We have put them in at the garage on the 3100s and its about a 30 min job. I dont why GM screwed with them in the first place its a whole lot easier on a 3.1 and 2.8 about a quick 5 min job for them. Good luck on that knuckle buster. Quote Link to comment Share on other sites More sharing options...
musthavemuzk Posted October 14, 2003 Report Share Posted October 14, 2003 so anyone got pics of the t-stat location on the 3100? here are some of the 3.1 in my 90 cutty. http://www.dbfanatics.com/forum/photo_album_view.asp?cname=wires&mid=16&cid=150&page=3 it is at the end of the top radiator hose that runs along side the airbox. 2-13mm bolts. as was said it is a quick simple swap. recomended to do this to a cool car. Monty Quote Link to comment Share on other sites More sharing options...
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