TheBeastie Posted September 21, 2014 Share Posted September 21, 2014 I had The Beastie off road yesterday working quite hard and was a little surprise/dismayed that the temperature gauge hit 105C but the fans still did not come on. I have an X-Eng switch and after the 300Tdi was put in I did test that is I put power to the right poles the fans did work so I know the wiring and the fan is OK. I am also fairly sure the gauge is OK since it is a new VDO together with VDO sender and it suggests usual running temperature is about 80C The only difference I see is that originally the unit was in a bottom hose but after the new engine it has been put into a top hose (maybe not room or who knows!). Is it likely that this is the problem - in which case I will see if I can replace the switch to somewhere near its original position; or are these switches effectively consumable items? Mine must be at least 6 years old. Whatever I think I need a solution since I am sure going that high cannot be good for the engine. ANy suggestions would, as always, be most appreciated. Thanks Malcy Quote Link to comment Share on other sites More sharing options...
Disco-Ron Posted September 21, 2014 Share Posted September 21, 2014 Is the switch at the bottom of the housing? ?... needs to be in contact with the water. Do you have an airlock that might be making it worse? ? Quote Link to comment Share on other sites More sharing options...
Chrisjamez Posted September 21, 2014 Share Posted September 21, 2014 I always thought they had to be in top hose as that is usually the pipe that gets hottest first I would probably say it must be the switch or as disco Ron said a airlock Quote Link to comment Share on other sites More sharing options...
Orgasmic Farmer Posted September 21, 2014 Share Posted September 21, 2014 Is it a 200 tdi as in your profile? If so then find a thermostat housing from an old Disco/RRC 200 tdi which had aircon. They come with a thermo switch built into the housing and make for a very useful way of switching on an electric fan that looks factory standard. I use one on my challenge truck and it works faultlessly (though I also have a manual switch too). Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted September 21, 2014 Share Posted September 21, 2014 The X-Eng switches are for the bottom hose, read the instructions! You can test the switch with boiling water and a multimeter, but for the cost, after checking the rest of the wiring as something may have got snagged, just replace it. Quote Link to comment Share on other sites More sharing options...
TheBeastie Posted September 26, 2014 Author Share Posted September 26, 2014 Thanks guys. I think that at least the initial step (before I go off road again!) is to move the thermo-switch down to the bottom hose. I may try and ask the guy who did the transplant if there was any reason why it went where it did but may not be a clever call on my part. So next stop is to get a new top hose and then look at insinuating it into the bottom hose somewhere. Moving the electrics, if needed, should not be a problem. If it still looks wonky then will get a new unit. Thanks for the suggestions Malcy Quote Link to comment Share on other sites More sharing options...
rallycinq Posted September 28, 2014 Share Posted September 28, 2014 Sorry to thread hijack, but is there an easy way to pick up a fan electric supply in the engine bay, or is it a case of leading in a feed from the habaticle? Cheers D Quote Link to comment Share on other sites More sharing options...
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