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paul large
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Join Date: Aug 2015
Posts: 2

Coolant Temperature Sensor

08/21/2015 8:00 AM

Hi,

am paul from nigeria and my cummins KTA 50 G3 is displaying an abnormal engine coolant temperature values and this only reflect in the left bank of the engine and leads to shut down of the gen set.

also when the set is off load its left bank coolant temp values could be at times 84 degree celsius while the right bank is 44 degree celsius.

please i need ur contibutions to bail me out am new here.
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Rixter
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#1

Re: COOLANT TEMPERATURE SENSOR

08/21/2015 8:12 AM

A faulty thermostat is a likely cause. Other causes could be some other water blockage, air blockage through the radiator, or a faulty sensor.
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Fredski
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#2

Re: COOLANT TEMPERATURE SENSOR

08/21/2015 8:23 AM

we don't do long distance repairs here, call a service tech and pay them
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SolarEagle
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#3

Re: Coolant Temperature Sensor

08/21/2015 12:07 PM

Maybe some scale buildup or dirt buildup, or low water pressure...check specs and flow rate...
http://www.cumminsindia.com/documents/dbu/genset_installation_recommendation.pdf

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aurizon
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#4

Re: Coolant Temperature Sensor

08/21/2015 7:15 PM

hopefully you do not have a head gasket breach. That will showup as heating and oil in the water. You might also get some coolant in the crankcase oil.

You could also have a broken/worn vane on the water pump that serves the hot bank,

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Kent22
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Join Date: Aug 2015
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#5

Re: Coolant Temperature Sensor

08/21/2015 10:48 PM

Blockage maybe, Check the Coolant return manifold if it has one
Is it Water you running or Coolant / Mix?
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Andy Germany
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#6

Re: Coolant Temperature Sensor

08/22/2015 2:44 AM

One of those cheap laser non contact thermometers will tell you if there is such a temperature difference between cylinder banks......

Furthermore, assuming that the left and right hand sensors are identical, swap them and see what happens to the display temps.

There are so many simple and cheap ways to find out if its a sensor or an engine problem, here are just two methods.....the first one will only cost about $25 on ebay....

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paul large
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Join Date: Aug 2015
Posts: 2
#7

Re: Coolant Temperature Sensor

08/25/2015 11:57 AM

thank u all for ur comments i quit appreciate but i hv rectify the problems its was a faulty engine interface board whose circuit is controlling the sensor, from all the comments read thus far, thermostats do not have the characteristic of temperature fluctuations its either too hot or very cold and the KTA 50 G3 is built with 4 thermostats and all 4 control the coolant in one directions and not by banks chambers.

once again i appreciate ur kind suggestions.
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Users who posted comments:

Andy Germany (1); aurizon (1); Fredski (1); Kent22 (1); paul large (1); Rixter (1); SolarEagle (1)

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