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Engine fan. 9 years 4 months ago #153923
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- midlife martyr
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- Time served MGer
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Engine fan. 9 years 4 months ago #153925
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- midlife martyr
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- Time served MGer
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- Posts: 495
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Engine fan. 9 years 4 months ago #153926
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- adamelphick
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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!
Engine fan. 9 years 4 months ago #153927
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- David Aiketgate
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- David
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- mgf mk2 freestyle mpi 16" wheels, in Anthracite.
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Yep, sounds like a dodgy sensor. Swap it with the one off your F, Roger. If that fixes the issue 
David
Engine fan. 9 years 4 months ago #153943
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- adamelphick
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Swapped mine from the F that I know worked - made no difference!
Engine fan. 9 years 4 months ago #154147
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- David Aiketgate
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- David
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- mgf mk2 freestyle mpi 16" wheels, in Anthracite.
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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'?
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.
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
Engine fan. 9 years 4 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.
I can't say I've heard the one on my 160 run either.
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