Water Temperature - Rev Limit

[DEMONKNIGHT666]

Hi all,
last night on the Motorway, Water Temp was sitting lower at 2 and bit bars and my Scan Guage reported 73 degrees, when I came off and on Dual carriageway with roundabouts found my lower limiter was engaged at under 7k, I had been driving for hours so all temps should have been hot enough for my remapped limit of 7.5k.
Today just driving in 30's the guage went to its normal place of around 4 and temp is 83 to 93 degrees which is normal for my car, rev limitor was back at 7.5k.
Any ideas?

 

[olliewebbuk]

CAS sensor, replace it.

 

[DEMONKNIGHT666]

CAS?

 

[olliewebbuk]

Not 100% sure that's the right name.

But any way, the coolant temperature sensor. Replace it.

 

[JackJack]

CTS not CAS.

 

[olliewebbuk]

Got there in the end, any way, yeah. Get it changed over.

 

[MicKPM]

i'd check your thermostat to... Could be sticking/leaking open and would cause a similar issue. If the coolant was going thru the rad at motorway speeds your core engine temps will be down and the CTS is possibly reporting correctly. Pop it in one day next week and i'll take a look at testing the CTS for you if you like?

Mick

 

[DEMONKNIGHT666]

Thanks Mick, I'll be in touch.