lilgreek Posted June 12, 2007 Share Posted June 12, 2007 just made my '91 ls400 into a cab a few months ago. so far, so good... a couple of weeks ago, i noticed that temp gauge was staying just above the 1st line....never higher...swapped the thermostat w/ my newly acquired '90 ls400 parts car (rear ended.) to no avail.....anyone have any ideas??? thanks!! p.s. rookie poster.......how do add pics here?? Quote Link to comment Share on other sites More sharing options...
Rice Posted June 12, 2007 Share Posted June 12, 2007 Looks like the temp guage. One more suggestion is the fan clutch may be engaged permanently. Try turning the fan with engine off - It should turn free. If it does, then it must be the guage or the temp sensor. Quote Link to comment Share on other sites More sharing options...
dansawyer Posted June 12, 2007 Share Posted June 12, 2007 The clutch turns free when it is warm. When it is hot it becomes viscous. Looks like the temp guage.One more suggestion is the fan clutch may be engaged permanently. Try turning the fan with engine off - It should turn free. If it does, then it must be the guage or the temp sensor. Quote Link to comment Share on other sites More sharing options...
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