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 Fan switch faulty ?????
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roddy21t
Site Subscriber

Joined: 05 Jan 2005
Posts: 589

Posted: Mon Apr 18, 2005 1:38 am

On my 21t when the engine is hot the fans are not kicking in ....but if i wiggle the plug going into the fan switch (on radiator) the fans make a half hearted attempt to come on,

BUT ...

when i switch on the fans through the manual switch i installed on the dash, the fans kick in with no problems, and then, even if i wiggle the fan switch whilst the fans are on MANUAL, they do not miss a beat,


So is this a faulty fan switch in the radiator ????
Chris H
Forum Moderator

Joined: 02 Mar 2004
Posts: 19978

Posted: Mon Apr 18, 2005 1:43 am

well the manual switch bypasses the rad switch, so Rebus what have we discovered?

Manual switch bypasses the rad switch so it won;ty make a difference if you wiggle it or pee on it.

But when you wiggle it when the manual switch is left off the fan make an attempt to come on.

2 possible conclusions, rad switch faulty or wiring connector dodgy.
roddy21t
Site Subscriber

Joined: 05 Jan 2005
Posts: 589

Posted: Mon Apr 18, 2005 1:53 am

Yeah thats what i was thinking Chris, im thinking more a fualty fan switch, if it where a dodgy connection then it would surely still cut on/off when i wiggle the plug i reckon .... ??
Chris H
Forum Moderator

Joined: 02 Mar 2004
Posts: 19978

Posted: Mon Apr 18, 2005 1:55 am

well yeah. Fan switch ain't cheap.

Ever though of binning the 21 switch? stick a 19/clio/whaterver else in there and take the plug off the loom then wire it up.

Both fans will come on instead of sequentially will stop 1 seizing and it will only be on for a few seconds.
roddy21t
Site Subscriber

Joined: 05 Jan 2005
Posts: 589

Posted: Mon Apr 18, 2005 2:06 am

Renault want £42 for a switch Shocked

Would the 19 switch fit in the radiator ??

On the old loom before i made the new one i had the 2 fan wires that went into the plug soldered together so both did come on at the same time, but when i redone the loom i went back to the old set up ...but what i did notice this morning in the traffic jam for ages is that one fan was taking a wee while to cool the engine down, so i might go back the the old set up and solder up the 2 wires again so both come on.
Chris H
Forum Moderator

Joined: 02 Mar 2004
Posts: 19978

Posted: Mon Apr 18, 2005 2:09 am

you not got your old switch?

if so bring it down I have a 19 one here you can have.

I also have a bit of loom and socket you can have an all.
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