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consider yourself fortunate
Posted by saab86 [Email] (more from saab86) on Mon, 14 Sep 2009 07:51:21
In Reply to: Unusually Low Temp at Hwy Speed, Don [Profile/Gallery]
, Mon, 14 Sep 2009 06:58:01
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no but seriously - it sounds like your thermostat may have failed open but just to be sure a couple of questions - where does it sit when you are in stop and go traffic? what is the ambient temperature when it does this? what level is your coolant? and last but not least does the fan come on at any time while you are driving? oh and if you know it what is the opening temperature of your stat? typically they are 179 or 191 give or take a few degrees
best case scenario: you have a 179 thermostat and are driving on a relatively cool day at a good clip down the highway - nothing to worry about except when it gets below 20 F;
middle case scenario: failed open thermostat - symptom would be cool all the time regardless of highway or city driving
worst case scenario: head gasket leak or leakage somewhere along the line - that's right you can get a real drop in a temperature reading when you are pushing air through the system - look for low coolant, loss of coolant under pump, at rad etc.
posted by 134.117.122...
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