Engine Temp - Haydn Alarm

[NLB2024]

So, just fitted my temp / coolant sensor from Haydn today, just bee for a run with it.

Drove about 20 miles @ 60mph - Rock steady 52 degrees c then came back at 70 mph and it topped out at 56 degrees c

Is that about normal? I have placed the sensor in t he recommended place per the instructions

[g8dhe]

Sounds about right.

[NLB2024]

Thanks

[g8dhe]

Should say those temperatures are quite low, but if your a 2l petrol understandable, however a diesel can get a LOT hotter quite safely! Bear in mind the whole point of the sealed pressurised system is to raise the boiling point above the normal 100°C which allows more heat to be moved away so its quite normal to see a much higher temperature when the cooling system is doing its job!

[NLB2024]

This is on a 2.5TD

[g8dhe]

If you have concerns then contact haydn callow on here as it was developed and sold via the forum at the start, and I do believe Haydn still comes on from time to time ... yes last on end of last year.

[Doone]

Maybe related to the thermostat? it's possibly stuck in the open position or has been removed? You could check if the bottom hose starts getting warm within a couple of minutes of the engine starting from cold. With a properly working thermostat, it normally takes quite a long time to feel warm.