electric fan

[braceuself]

car just overheated in heavy traffic.when is electric fan supposed to come on?it didnt come on at all. how do i test it?

[dai9fxey]

Not my strong point i'm afraid.
Sounds like a faulty temp transmitter.
There's a thread on here somewhere about leccy fans.

[braceuself]

ok thanks.i'll have a look for it

[dai9fxey]

Been lookng and can't find it. It was very recent though.
Must be in another thread somwhere.

[braceuself]

i've just had a search through them all and cant find it :-(.jc is prob the best for that type of thing.he knows a lot about electrics

[dai9fxey]

Found it.
There's a link in the thread which should help as well.

anyone got / had an mpi ?
« Thread Started on Jul 24, 2008, 3:53pm

[jc1380s]

Most likely fault would be the sensor - took mine off years ago and threw it away! - I have wired the fan directly to a switch on the dash - hardly ever used mine but once you see the temp rising you can switch it on if need be!

Not sure about the injection wiring as to if you could do that without upsetting that stupid ECU but can't see it being a problem

The way to see if its the sensor or the fan would be to remove the connector from the sensor while the engine is running and using a shorting piece of wire 'short' out the 2 terminals - if the fan is OK it should run - if nothing happens then it may be a faulty fan.

Hope that helps Brace!

jc

[braceuself]

thanks.where is the temp sensor for the fan?

[braceuself]

is it the one on bottom of rad?

[jc1380s]

On mine its on the head just under the thermostat housing

Not sure if yours is there or on the radiator

jc

[braceuself]

if i put a switch on do i just basically run a wire from one connector to a switch then back to the other connector(the ones that go to the original switch)?

[jc1380s]

Got it in one!

Spot on!!!!! ;D

jc

[braceuself]

brill.thats my job for tomorrow then :-)thanks

[taffy1967]

An SPi Mini (& all post 1992 1275 carb models) with have the fan switch located at the lower front of the radiator. It helps if you remove the grille to get at it.

So just remove the 2 spade connector terminals off it, connect them together with a paper clip and then switch on the ignition.

The auxiliary cooling fan should then come to life.

If it doesn't then I'd check the in-line fuse that's located behind the air filter box.

It'll be the one with the blue/red wire and the 15amp fuse.


In-Line Fuses situated behind air-filter on the bulkhead: -


15amp - Purple/Orange Wire
Hazard Warning & Interior Lamps


15amp - Brown/Orange Wire
Dim-Dip Lighting


10amp - Blue/Orange Wire
Rear Fog Guard Lamps


15amp - Blue/Red Wire
Auxiliary Cooling Fan (where fitted)

[braceuself]

thats good to know

[taffy1967]

So what did you find and what course of action did you take?

[braceuself]

it was a faulty switch.bought a brand new one for £5.simple job just pull it out and put new one on :-)

[taffy1967]

What the switch that's fitted at the lower/front of the radiator?

Did you have to drain the coolant first?

[taffy1967]

I see thanks Phil, my sisters old 1992 British Open Classic LE had the same type of auxiliary cooling fan set-up, but that had an hif38 carb.

[braceuself]

i pulled the switch out.its only held by a plastic retaining clip.turn it anti clock wise and just pull it out.the coolant just poured out of it anyway cos its at bottom of the rad.there's a rubber around the switch and i found it easier to push rubber seal in first then the switch into that.if you try putting the rubber on switch and push them in together its a real tight fit.its only 5 mins when you got the grill off first