6 replies to this topic

[Chris M]

Hi folks
My MPI Coopers cooling fan has started to run all the time. Are there any common faults that cause this?

[Sprocket]

This is often a symptom of a faulty coolant temperature sensor circuit (sensor and its wiring), but not limited to.

[FlyingScot]

Yes quick search will show that it was a factory recall because the wiring was too short.http://www.minispare.../YMQ105690.aspx
Can be damaged wiring due to age or faulty sensor

FS

[tcho100]

Might be worth replacing the ' temperature water transducer mpi brown sensor', though a similar problem on mine was cured by removing said sensor, spraying with wd40, quick wipedown and refit.

 

http://www.minispare...|Back to search

 

 

[YJO]

Try cleaning the electric contacts on the sensor in the first instance , my fan used to come on and off very erratically, tried this following advice from the forum.....but you might not be so lucky of course!

[rubdub]

I had the same issue on my mpi, new coolant sensor and all good now. But yes try clean it with electrical points cleaner first.

[rolf]

of course, this answer its not usefull to you after almost 2 years, but it may help others.
Clean the electric contacts on the sensor. You can find it very close to the expansion tank.

Edited by rolf, 10 August 2019 - 10:26 PM.