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thermo fan switch
#1
Hi all I have just purchased a 2005 MkII 1.4 petrol Berlingo, I have tried searching but said i needed 1 post before I could download anything so figured I may as well post :lol: I think there maybe a problem with my thermo fan as they do not kick in until ~105c this seems very high to me as when cruising sits on ~85c so I dont think it is a thermostat issue just stopped in traffic temp keeps climbing until they do eventually kick in and temp drops, I have disconnected water temp sender and gauge goes all the way to hot and stop light flashes so I guess the water temp sender works ok. Appreciate any help in locating sensor for thermo fan Smile
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#2
Found a post saying check mf1 fuse will check that tomorrow Smile
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#3
How do you gain access to the mf1 fuse?

Like you my fan never seems to come on normally, only comes on when I pull the wires from the temp sender.

Question, if the mf1 fuse has gone, why would there still be power going to the fan when I pull the temp sender wires?
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#4
Mine does the same, switches in at something over 100C. I assume it's perfectly normal. It's perfectly reproducable and hasn't resulted in any harm so far.
Malc

Stupid computer!
Security system should not fail safe!
Security system should fail dangerous!
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#5
(06-10-2012, 02:12 PM)crickleymal Wrote:  Mine does the same, switches in at something over 100C. I assume it's perfectly normal. It's perfectly reproducable and hasn't resulted in any harm so far.

I don't think its normal. The fan should come on in two stages. First slower stage around 90 then the faster stage around 100+
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#6
Same here. I started to get a bit worried the first time I was sat in traffic in the Blingo as the temperature dial rose past the usual 80-95degrees and kept on going:eek: eventually though it did reach the fan cut-in point (probably just over 100 degrees) and the temperature came back down ok.

I believe this is quite normal or a Berlingo, it's just that it's different to my previous cars, and I guess it dpeends on how accurate the temperature guage really is.

If your fan is kicking in and preventing overheating then I'd leave it at that, surely if the fuse had gone then the fan would not operate at all?
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#7
on my old 1.4 berlingo the switch was just below the cylnder head n/side end hiding behind a bracket for something . The temp that it worked at was nearly 120 deg.
Theres photo of it under thread called Mystery sensor. Rustocrat solved it
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#8
Thanks for replies will have a suss and report back Smile
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#9
MF1 fuse is ok, cannot seem to find mystery sensor?!?!? so maybe it is just how it is, see how I go with summer coming up and aircon on if it gets really hot or not, maybe just have to take all the back streets home so I don't get stuck in traffic :lol:
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#10
With the aircon on there should be (at least on other Pugs and Cits I've owned) a fan that comes on with the aircon. So paradoxically it may run slightly cooler with the aircon on even with the increased load.

I was watching my temp gauge yesterday, as I've just changed the coolant, and mine sits at 85C normally. In Stop start traffic it rises to over 90c probably topping out at 100C (the markings on the gauge aren't that clear) or thereabouts. So it sounds like your's is fairly normal behaviour. Mind ewe mines a 1.9D so may be a bit different to yours.
Malc

Stupid computer!
Security system should not fail safe!
Security system should fail dangerous!
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