Temperature gauge

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Temperature gauge - 5/17/2007 2:49:58 PM    Oldhat   Posts: 12 Joined: 12/9/2005 Status: offline Have a 02 Montero XLS with 122000 trouble free miles on it. My wife drives 76 miles each day to work and back. She called and about 2 miles from work the temp gague was on hot. Pulled to the side of interstate and waited for me. Took about 45 minits to get there, and no sign that it had been hot. I followed her about a mile and she pulled over and the gague was on H. But the engine was not hot, I could put my hand on the radiator hose and it was just warm.  I ordered a sending unit , but it will not be in till next week. Anyone had this problem before. Thank You  JT  Post #: 1

RE: Temperature gauge - 5/18/2007 12:40:14 PM    tj90 Posts: 150 Joined: 9/15/2006 Status: offline At least your wife reads the guages. The valves would be warped on mine, before the problem is detected!!! Sorry - my jab at women drivers... Do you have access to OBD software? It would be interesting to note what temps the ECU is seeing. Also what about thermostat? Could it be stuck closed or partially closed? that would cause the water in the block from circulating and invalidate your "touch hose to see if hot" method. What about the water pump? Has it stopped working? Not sure how that would happen but I understand that the monty water pump should be changed at 100 or 120k mile intervals - sounds like you are there... In any case, better limit driving until you get this sorted out. < Message edited by tj90 -- 5/18/2007 12:42:50 PM > (in reply to Oldhat) Post #: 2

RE: Temperature gauge - 5/18/2007 1:11:57 PM    Sebba Posts: 14597 Joined: 2/20/2006 From: San Antonio, TX Status: online thermostat more than likely _____________________________ These cranks are made for walkin'''', and thats just what they''''ll do, one of these days these cranks are gonna walk all over you (in reply to tj90) Post #: 3

RE: Temperature gauge - 5/19/2007 4:19:37 AM    Oldhat   Posts: 12 Joined: 12/9/2005 Status: offline I do not think it is getting hot at all. I was driving it last night the temp gage was normal, about mid way on the gague. In about 2 sec. it went to hot then down to three quarters before I could get out of the driveway. ( My drive way is about a quarter mile.) Shortly there after it was normal. Could it be a wiring conection at the sending unit?  Thank You JT (in reply to Sebba) Post #: 4

RE: Temperature gauge - 5/19/2007 8:10:36 AM    Oldhat   Posts: 12 Joined: 12/9/2005 Status: offline I picked up a thermostat, O-ring, and antifreese this morning. Will get it changed and let you know. thank you for the info. JT (in reply to Oldhat) Post #: 5

RE: Temperature gauge - 5/19/2007 7:35:57 PM    Oldhat   Posts: 12 Joined: 12/9/2005 Status: offline Thank you . The new thermostat did the trick. I have had thermostats go bad before, but never act like this one. tj90 my wife thanks you for the complement.She did alot of drag raceing back in the 60's, and could power shift a mincie 4 speed with the best, so she has alot of common sense about mechanics. Again thanks for the help. JT (in reply to Oldhat) Post #: 6

RE: Temperature gauge - 5/22/2007 8:42:05 AM    tj90 Posts: 150 Joined: 9/15/2006 Status: offline Glad it worked out and fortunately it was a cheap solution! (in reply to Oldhat) Post #: 7

RE: Temperature gauge - 5/22/2007 11:49:21 AM    Winshawn   Posts: 269 Joined: 1/31/2005 Status: offline Those are the exact symptoms for a thermostat stuck closed. Glad it got fixed before your engine went bad. _____________________________ '90 Montero (sold-sadly) '95 Montero LS (166k) - my car '03 Montero Limited (36k) - wife's car (in reply to tj90) Post #: 8

RE: Temperature gauge - 5/22/2007 11:59:10 AM    Sebba Posts: 14597 Joined: 2/20/2006 From: San Antonio, TX Status: online Glad to hear we could be of help. Come back soon _____________________________ These cranks are made for walkin'''', and thats just what they''''ll do, one of these days these cranks are gonna walk all over you (in reply to Winshawn) Post #: 9

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