Problem with cooling fan...again! - Page 3

billcoleman · 12th August 2017, 23:01

I had an issue where my fan ran at high speed constantly after switching on the ignition. This ended up being that water had got into the big connectors just in front of the offside wheel arch. Very easy to separate the plugs, dry-off and reconnect.

this plug is sensitive to water ingress.

Jules · 16th August 2017, 21:55

Quote:

Originally Posted by billcoleman

I had an issue where my fan ran at high speed constantly after switching on the ignition. This ended up being that water had got into the big connectors just in front of the offside wheel arch. Very easy to separate the plugs, dry-off and reconnect.

this plug is sensitive to water ingress.

Yes we've a few cases but mainly the Chinese copy motors and plugs !
The OEM plugs are pretty weather proof.
We grease up any multi plugs we disconnect.
It gives them extra protection against corroding pins preventing bad connections in the future

FrenchMike · 17th August 2017, 06:50

Quote:

Originally Posted by billcoleman

I had an issue where my fan ran at high speed constantly after switching on the ignition. This ended up being that water had got into the big connectors just in front of the offside wheel arch. Very easy to separate the plugs, dry-off and reconnect.

this plug is sensitive to water ingress.

Quite possible as the tiny wires bring the commands from the ECM .

BTW ,it is a way to check the system by connecting them to earth.

blue/purple = PWM
grey=trinary switch

Mike

rovertone · 4th September 2017, 13:30

Just an update on this.
I never really got to the exact reason for the strange fan operation but went ahead and fitted one of Jules' Revotec fan kits and replaced control box relays.

So far fan is back to running correctly. Just to say the Revotec fan kit is excellent, the instructions supplied and help from Jules being first class.
Thanks

Stickman · 4th September 2017, 21:43

Quote:

Originally Posted by rovertone

Just an update on this.
I never really got to the exact reason for the strange fan operation but went ahead and fitted one of Jules' Revotec fan kits and replaced control box relays.

So far fan is back to running correctly. Just to say the Revotec fan kit is excellent, the instructions supplied and help from Jules being first class.
Thanks

For future reference to anyone experiencing similar cooling fan woes
I'd thoroughly recommend the revotec kit from Jules
Easy to fit and Jules is always willing to help with advice

Regards
Chris

4th September 2017, 13:30	#24
rovertone Gets stuck in Rover 75 Conne SE Auto CDTi Join Date: Nov 2012 Location: Redditch Posts: 679 Thanks: 185 Thanked 135 Times in 109 Posts	Update Just an update on this. I never really got to the exact reason for the strange fan operation but went ahead and fitted one of Jules' Revotec fan kits and replaced control box relays. So far fan is back to running correctly. Just to say the Revotec fan kit is excellent, the instructions supplied and help from Jules being first class. Thanks __________________ 2003 Mk 1 Connie SE CDTi Auto Monogram Mirage 2/Sandstone Leather 511th CDTi out of 4744 produced 9th in Mirage 2 out of 17 produced Also 2004 Rover 25 SXi CVT, 1999 Megane Cabriolet and still missing my 800 Fastback.

12th August 2017, 23:01	#21
billcoleman Gets stuck in MGZT-T Join Date: Aug 2007 Location: Bournemouth Posts: 578 Thanks: 7 Thanked 27 Times in 24 Posts	I had an issue where my fan ran at high speed constantly after switching on the ignition. This ended up being that water had got into the big connectors just in front of the offside wheel arch. Very easy to separate the plugs, dry-off and reconnect. this plug is sensitive to water ingress.