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P0118, ECT sensor

25K views 33 replies 12 participants last post by  Willie Williford  
228 peak = 108C which is pretty hot..

As no one else has reported the OBDIIC&C gauge sounding the overtemp alarm for no apparent reason it must likely be to do with your sensor or cooling system.

Perhaps your radiator is badly blocked with scale or the thermostat is not opening correctly.

Perhaps your temp sensor is off?

Can you check the resistance of it against water of a known temp?

If you can borrow a scangauge of cheap elm 327 reader you can also read temp via the obdii port and see if it correlates with the OBDIIC&C
 
Your torque results show the OBDIIC&C is not faulty which is good.

You can adjust the obdII brightness manually, but it can't do it automatically when you turn on the lights..

Sounds like a radiator issue if you are sure it has been bled correctly.
Check the stat though for correct opening etc.

Perhaps add some cleaning fluid to a fresh fill, let it run, then empty the whole system and stick a hosepipe in the various holes/hoses and back flush it all..

If that doesn't cure it and you are sure about the stat opening and water pump etc then time for a new radiator IMHO..

Perhaps the impeller in the pump has become detached of broken some fins?