Cooling fans is it me or are they running too often...
Discussion
Despite the hot weather I am convinced the cooling fans on my X308 XJR sem to be running a lot, its not constant but they are on an awful lot, any ideason this chaps ?
Secondly, the leather on the steering wheel is starting to wear where I rest my hand whilst driving, anyone got an idea of what I could apply to help preserve this ?
Thankyou
Secondly, the leather on the steering wheel is starting to wear where I rest my hand whilst driving, anyone got an idea of what I could apply to help preserve this ?
Thankyou
P700DEE said:
Classic sign of a failing thermostat. Do they run after you switch off ? Note they run single speed if you use the aircon, it is unusual to run double speed except in this weather in traffic.
It does run on after switch off, it stops briefly when i turn the ignition off and then almost instantly starts again.This is with aircon off but to be honest I didnt check if both were running...
Yes the auxillary belt does drive the water pump.
The temperature guage is nothing more than a damped switch that operates between cold, normal and engine destroyed. You need to get the real temperatures read quick, a simple bluetooth OBDN reader and a phone app are enough to give you a read out. You may have a failing water pump it could be a duff new thermostat. The water loss could easily be some water boiling off , this is very bad for our cars Aluminium engines do not like excess heat , head gasket failure is very common if your engine gets too hot!
The temperature guage is nothing more than a damped switch that operates between cold, normal and engine destroyed. You need to get the real temperatures read quick, a simple bluetooth OBDN reader and a phone app are enough to give you a read out. You may have a failing water pump it could be a duff new thermostat. The water loss could easily be some water boiling off , this is very bad for our cars Aluminium engines do not like excess heat , head gasket failure is very common if your engine gets too hot!
Did you use a Jaguar temp sensor?
I looked at a car for someone whos fans were running high speed more than they should. His thermostat and water pump and temp sensor had all been replaced. Not sure what the orginal fault was, I visually inspected the pump and tested the thermostat, all ok, I had a used Jaguar temp sensor, fitted this and all was ok. The thermister sends signal to ECU and therefore controls the fan.
So the non jaguar sensor was sending incorrect signals to the ECU.
I looked at a car for someone whos fans were running high speed more than they should. His thermostat and water pump and temp sensor had all been replaced. Not sure what the orginal fault was, I visually inspected the pump and tested the thermostat, all ok, I had a used Jaguar temp sensor, fitted this and all was ok. The thermister sends signal to ECU and therefore controls the fan.
So the non jaguar sensor was sending incorrect signals to the ECU.
melhookv12 said:
Did you use a Jaguar temp sensor?
I looked at a car for someone whos fans were running high speed more than they should. His thermostat and water pump and temp sensor had all been replaced. Not sure what the orginal fault was, I visually inspected the pump and tested the thermostat, all ok, I had a used Jaguar temp sensor, fitted this and all was ok. The thermister sends signal to ECU and therefore controls the fan.
So the non jaguar sensor was sending incorrect signals to the ECU.
I think I may have a non genuine part, it came from David Manners and I cannot remember.I looked at a car for someone whos fans were running high speed more than they should. His thermostat and water pump and temp sensor had all been replaced. Not sure what the orginal fault was, I visually inspected the pump and tested the thermostat, all ok, I had a used Jaguar temp sensor, fitted this and all was ok. The thermister sends signal to ECU and therefore controls the fan.
So the non jaguar sensor was sending incorrect signals to the ECU.
Its good advice so I will pick one up just to be sure. Thanks
Zippyworld said:
melhookv12 said:
Did you use a Jaguar temp sensor?
I looked at a car for someone whos fans were running high speed more than they should. His thermostat and water pump and temp sensor had all been replaced. Not sure what the orginal fault was, I visually inspected the pump and tested the thermostat, all ok, I had a used Jaguar temp sensor, fitted this and all was ok. The thermister sends signal to ECU and therefore controls the fan.
So the non jaguar sensor was sending incorrect signals to the ECU.
I think I may have a non genuine part, it came from David Manners and I cannot remember.I looked at a car for someone whos fans were running high speed more than they should. His thermostat and water pump and temp sensor had all been replaced. Not sure what the orginal fault was, I visually inspected the pump and tested the thermostat, all ok, I had a used Jaguar temp sensor, fitted this and all was ok. The thermister sends signal to ECU and therefore controls the fan.
So the non jaguar sensor was sending incorrect signals to the ECU.
Its good advice so I will pick one up just to be sure. Thanks
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