Moparmike Posted April 13, 2018 Share Posted April 13, 2018 When I'm driving temp goes to about 185 190 when I stop in less then 5min.later it's under 180 maybe 150 ..any idea I'm thinking someone took the thermostat out .. 2000 rd690 e7 300hp Allison automatic quad axle dump 68000lbs Quote Link to comment https://www.bigmacktrucks.com/topic/53086-thermostat-or-something-else/ Share on other sites More sharing options...
fjh Posted April 13, 2018 Share Posted April 13, 2018 Stat is you first step Id think Quote Link to comment https://www.bigmacktrucks.com/topic/53086-thermostat-or-something-else/#findComment-396533 Share on other sites More sharing options...
alex g Posted April 13, 2018 Share Posted April 13, 2018 You could open rad cap slowly and carefully when your up to temp and put a thermometer in to get actual temp. I had gauge fail on mine. Quote Link to comment https://www.bigmacktrucks.com/topic/53086-thermostat-or-something-else/#findComment-396537 Share on other sites More sharing options...
terry Posted April 13, 2018 Share Posted April 13, 2018 get a heat gun and compare guage readings to gun readings. terry 1 Quote Link to comment https://www.bigmacktrucks.com/topic/53086-thermostat-or-something-else/#findComment-396544 Share on other sites More sharing options...
hatcity Posted April 13, 2018 Share Posted April 13, 2018 30 minutes ago, terry said: get a heat gun and compare guage readings to gun readings. terry I would go with this idea. HOT fluid will jump out at you and give you second degree burns on the leg....ask me how I know Quote Success is only a stones throw away.................................................................for a Palestinian Link to comment https://www.bigmacktrucks.com/topic/53086-thermostat-or-something-else/#findComment-396548 Share on other sites More sharing options...
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