Water temperature running cold

Discussion in 'Ask An Owner Operator' started by Adriantx, Sep 13, 2021.

  1. Adriantx

    Adriantx Light Load Member

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    I have a 2016 kenworth t680 with cummins isx15 recently I got an overhaul done and now my water temp runs at l75 to 178 flat idling and running? when going up hill fan cuts on as normal at 210, 215. Before over haul truck was running 180 to 195 water temp don't know what changed. shop looks at it and finds nothing wrong they also changed the thermostat but truck still runs 175 checkd the gage said it was good as well as temp sensor said it was good. Anyone have any idea what could be the problem? Thanks in advance
     
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  3. skallagrime

    skallagrime Road Train Member

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    They may have changed thermostat to a cooler one than had previously been there. When my truck was overhauled, someone had put 175 degree tstats in, cat replaced with 195s (spec)

    The old stats i prefered in summer, but in winter, the new ones are much nicer.
     
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  4. Ridgeline

    Ridgeline Road Train Member

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    Why did they overhaul it?
     
  5. bad-luck

    bad-luck Road Train Member

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    They could have put a lower temp thermostat, I would ask them what they put in. I don't know off hand the normal running temp for your engine. It is possible, that there was corrosion build up in engine and now that its been cleaned and overhauled you have better coolant flow, thus lower temperatures.
     
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  6. RunningAces

    RunningAces Medium Load Member

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    How many miles you put on that isx15 before the overhaul? Why did it need an overhaul so early?
     
  7. Rideandrepair

    Rideandrepair Road Train Member

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    The kit probably came with thermostats. Easy enough to find out. Old ones must have been higher. Use whatever’s spec.
     
  8. Adriantx

    Adriantx Light Load Member

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    809,000 on it reason was water was going into head of motor
     
  9. Adriantx

    Adriantx Light Load Member

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    Dec 29, 2018
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    809,000 on it reason was water was going into head of motor
     
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