Engine fan.

Engine fan. was created by Forrester

Posted 9 years 11 months ago #153922
On my TF160 I have just bought, the engine fan comes on after I've done about 6 miles & carries on blowing all the time.
Surely this is not normal. The fan on my F hardly ever engages.
Is there a problem?
by Forrester

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Replied by midlife martyr on topic Engine fan.

Posted 9 years 11 months ago #153923
How old is your Tf because the earlier ones have a independent sensor for the engine bay fan where as the later models the radiator fan and the engin bay fan come on together.
by midlife martyr

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Replied by Forrester on topic Engine fan.

Posted 9 years 11 months ago #153924
It's an 02.
by Forrester

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Replied by midlife martyr on topic Engine fan.

Posted 9 years 11 months ago #153925
It will have a dedicated sensor on a bracket behind the expansion tank I suspect it may be faulty.
I am assuming that you have no overheating issues, even if you did I would be surprised if the engine bay would get hot enough to cause the sensor to open the circuit so quickly if it was working properly.
by midlife martyr
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Replied by adamelphick on topic Engine fan.

Posted 9 years 11 months ago #153926
My '53 Sunstorm has a sensor, and the fan never comes on. It registers 139 degrees on diagnostics as if the circuit is open (i.e the sensor isn't connected) yet if I take the connector off it the fan comes on! I think the engine bay fans are a lottery!

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by adamelphick

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Replied by David Aiketgate on topic Engine fan.

Posted 9 years 11 months ago #153927
Yep, sounds like a dodgy sensor. Swap it with the one off your F, Roger. If that fixes the issue :broon:

David
:shrug:

by David Aiketgate
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Replied by Forrester on topic Engine fan.

Posted 9 years 11 months ago #153942
Just ordered a new sensor from MG/MGTF spares fro £15 inc p&p :broon:
See if that cures it.
by Forrester

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Replied by adamelphick on topic Engine fan.

Posted 9 years 11 months ago #153943
Swapped mine from the F that I know worked - made no difference!

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by adamelphick

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Replied by Forrester on topic Engine fan.

Posted 9 years 11 months ago #154136
Well, I have fitted a new sensor & it has made no difference :(
I have no overheating problems, so where do I go from here?
by Forrester

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Replied by David Aiketgate on topic Engine fan.

Posted 9 years 11 months ago #154147
That's a mystery. Have you had an OBD reader on the car to check for any fault codes? There is an overheat sensor somewhere and if that fails perhaps its default is to switch the engine bay fan on to cool the 'overheat situation'? :shrug:

I know that Adam's car shows that fault in the overheat circuit on OBD and I suspect that's why he has issues with that sensor.

David
:shrug:

Last Edit:9 years 11 months ago by David Aiketgate
Last edit: 9 years 11 months ago by David Aiketgate.
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Replied by Bob on topic Engine fan.

Posted 9 years 11 months ago #154148
I agree about the engine bay fan operation being a lottery.I never heard the one on my last car work even on runs when other F drivers fans were running mine was not.I checked it to see if it was working and it ran fine when I disconnected the sensor. :-?
I can't say I've heard the one on my 160 run either.
by Bob

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