KATOOM Posted September 20, 2011 Share Posted September 20, 2011 Has anyone ever hooked up an aftermarket engine temperature gauge? I know the factory gauge says 190* on the middle mark but does anyone really know what temperature the other marks are supposed to be? You go from 190* in the middle, to the next line, and then nothing until 240*. Thats a big number jump to not know whats in between. Link to comment Share on other sites More sharing options...
pepsi71ocean Posted September 20, 2011 Share Posted September 20, 2011 the left line is ~165F the one on the right i never bothered to guess at. Link to comment Share on other sites More sharing options...
dripley Posted September 20, 2011 Share Posted September 20, 2011 i always figured 165 and 215 since there was a 50* differance both ways. that is 140 190 and 240. thats not very scientific but it is useful. Link to comment Share on other sites More sharing options...
ISX Posted September 20, 2011 Share Posted September 20, 2011 150/210 Link to comment Share on other sites More sharing options...
dripley Posted September 20, 2011 Share Posted September 20, 2011 150/210 is there some science behind that? if there is i am running colder than i have been thinking. Link to comment Share on other sites More sharing options...
ISX Posted September 21, 2011 Share Posted September 21, 2011 is there some science behind that? if there is i am running colder than i have been thinking. I am going by memory but pretty sure thats what it ran. I used to have an analog gauge in there as well so that's how I know. 1998+ trucks have different gauges so that might be a little off from your's. My old crappy thermostat would always peg that upper line and I remember always seeing 210-212 and then it would fall to the lower line which was around 150. Now it gets to 190 and drops to 185 and stays in that 5F area. Link to comment Share on other sites More sharing options...
dually Posted September 21, 2011 Share Posted September 21, 2011 I have an aftermarket manual gauge the probe is on top of the head. The factory gauge is within 4 or 5* of the after market. How these guys are telling you is spot on. Link to comment Share on other sites More sharing options...
KATOOM Posted September 21, 2011 Author Share Posted September 21, 2011 So.....its official.....165 and 215. Unless someone else can say otherwise. Link to comment Share on other sites More sharing options...
MarbleCrusher Posted September 21, 2011 Share Posted September 21, 2011 well i see two different answers here, 165/215 and 210/150. -Jordan- Link to comment Share on other sites More sharing options...
Administrator Mopar1973Man Posted September 21, 2011 Administrator Share Posted September 21, 2011 I'm pretty sure the lower line is ~160*F and the upper line is ~220*F Link to comment Share on other sites More sharing options...
dripley Posted September 21, 2011 Share Posted September 21, 2011 I'm pretty sure the lower line is ~160*F and the upper line is ~220*F all right thats 3 sets of numbers now. think ill go stick my finger in the coolant and judge for myself. louder the scream the higher the temp. Link to comment Share on other sites More sharing options...
Administrator Mopar1973Man Posted September 21, 2011 Administrator Share Posted September 21, 2011 Dripley don't do it... :duh:What I'll do later on when I get some time is using my ScanGauge II and a rheostat I'll find out exactly what it is... Link to comment Share on other sites More sharing options...
Administrator Mopar1973Man Posted September 21, 2011 Administrator Share Posted September 21, 2011 Results are in... I tried using a rheostat and the lower values are easy to hit but the upper value kept doing werid things so I went to resistors and stuffing different resistors into the plug. Tidbit though... I found out the lower the coolant temp the highier the idle is. At 0*F the idle is like 1,100 RPM on its own...:stuned:Lower mark is 165*F...Just for fun to show 207*F...Upper limit is going to be 220*F Link to comment Share on other sites More sharing options...
KATOOM Posted September 21, 2011 Author Share Posted September 21, 2011 Once again..... You're the man Mike. Link to comment Share on other sites More sharing options...
ISX Posted September 21, 2011 Share Posted September 21, 2011 Whoa the 1998+ gauges are drawn a lot different. Yeah ignore what I said. Link to comment Share on other sites More sharing options...
dripley Posted September 21, 2011 Share Posted September 21, 2011 AAAAAAAAAAAAAAAAHHHHHHHHHHHHHHHH!!!!!!!!!!!!!!!!!!!!!!!! thats about 215. shoulda listened. Link to comment Share on other sites More sharing options...
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