Leak From Cooling Fan Thermoswitch

[Neil205 1]

Just changed my radiator and had a leak from the cooling fan switch , so fitted a new washer and some ptfe tape round it and it's still leaking . Any ideas what to do to / fit stop it ?

[welshpug 1,666]

you should only need the copper washer, where is it leaking?

[Tom Fenton 1,548]

Agree with Welsh. Have you got it tight enough? As it's in an awkward place. 29mm spanner.

[Neil205 1]

Yep , copper washer on and tightened it up again and still leaking from there ?

[welshpug 1,666]

I would try a new washer and inspect the radiator for any damage, possible that the plastic is damaged around the brass insert for the threads.

[Neil205 1]

Ok thanks new washer again and seems to be ok , next problem I also have a small leak / drop coming from just above corner of the sump drivers side below drive belt , it's not the coolant hoses , could it be from the water pump seal leaking ?

Edited April 16, 2017 by Neil205

[Simes 248 2 Cars]

Probably the pump.

[welshpug 1,666]

yeah, not often seen the gasket for a pump leak, only the internal seal after the bearing gets a bit of wear in it.

[Neil205 1]

Seems to be only leaking once the car is stationary and engine has been switched off , no noise from the pump

[Neil205 1]

Popped it to the garage yesterday they checked all hoses couldn't find anything leaking and of course didn't leak there , just took it for another run now and the leak is back again from drivers side corner sump area , seems only after stationary and a run , would it still be the water pump seal then ?