V8 "Engine Overheating" displayed in message centre?
Discussion
Hello all, first post...
Late-model XKR.
After 10-15 minutes sitting in slow-moving traffic, the dashboard displays the disconcerting news that the engine is overheating.
Is this standard fare, because there's no temperature gauge, or is it a signal of impending doom?
I understand these engines are pretty bullet-proof, so could it be a dicky sensor, or something more fundamental?
Would a dicky sensor "show/not show" on the diagnostic memory recall?
Thanks all, in advance.
Late-model XKR.
After 10-15 minutes sitting in slow-moving traffic, the dashboard displays the disconcerting news that the engine is overheating.
Is this standard fare, because there's no temperature gauge, or is it a signal of impending doom?
I understand these engines are pretty bullet-proof, so could it be a dicky sensor, or something more fundamental?
Would a dicky sensor "show/not show" on the diagnostic memory recall?
Thanks all, in advance.
I appreciate the reference to the radiator fan - and aluminium engine design.
What puzzles/intrigues me is whether or not a failed fan would register in the OBD memory - given that it's such a fundamentally important engine protection feature.
And, if it doesn't log a fault, then the only means of "testing" would be going down the "destructive testing" route, and creating a situation whereby you necessarily have to overheat the engine to notice the failed fan? Though this does seem a strange way of going about things.
Thank you to all who have contributed.
What puzzles/intrigues me is whether or not a failed fan would register in the OBD memory - given that it's such a fundamentally important engine protection feature.
And, if it doesn't log a fault, then the only means of "testing" would be going down the "destructive testing" route, and creating a situation whereby you necessarily have to overheat the engine to notice the failed fan? Though this does seem a strange way of going about things.
Thank you to all who have contributed.
The Leaper said:
I have an XF, 5.0 V8 n/a. Recently, I got a yellow engine warning light come on. Took it to the local JMD and it was diagnosed as a failing water pump which is quite a common issue after around 50,000 miles with the XF, apparently.
I mention this because the warning light relating to the water pump is not the same as what's appeared on your vehicle, so maybe a water pump failure can be eliminated in your case.
R.
Can I ask what warning is displayed for that, please? I mention this because the warning light relating to the water pump is not the same as what's appeared on your vehicle, so maybe a water pump failure can be eliminated in your case.
R.
Just curious, without sounding daft - is it a specific message?
P700DEE said:
It is VERY serious! You have an Aluminium engine , they don't like getting too hot. Typically the fault you describe is either a failing thermostat or fans. Simple first check open the bonnet are the fans running with the aircon on? Might just be a fuse blown? Don't wait, head gasket failure follows after an overheat, the solutions are much cheaper if you find the cause quickly.
Rhetorical question, but when does "overheat" become a "serious overheat" which would cause significant latent damage ?I hope the question doesn't sound absurd.
TIA
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