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ric p
Original Poster
104 posts
138 months
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Just returned from the LM Classic with only the LH radiator fan cutting in. The RH one cools the radiator and oil cooler and is triggered by an engine sensor rather than a thermostat, as I understand it.
Have checked fuze and relay in the footwell and both are OK. However when I try to spin the fan by hand, it moves but will not spin freely. Thus suspect that the fan is u/s. Is there any way to prove this, ie disconnect the electrical plug at the bottom of the fan where it plugs into the loom and connect the fan direct to a 12v source?
If so, is there a non-OEM fix to save a few quid?
Thanks in advance.
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TISPKJ
1,201 posts
76 months
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Hi Rick ? yes do exactly as you have suggested in order to test, keep your fingers out the way because they spin up pretty good.
My one kept blowing a fuse on that same side (OS or drivers side on RHD) for no real reason on the odd occasion and I was advised by TFC that this is a possible symptom ? of the motor on its way out.
I Had both rads recored as they were picked up as showing signs of corrosion on a service before I bought the car and I wanted more for cosmetic reasons as much as anything some new fans faced with the silly cost of new fans I did a bit of research via ferrarichat.com regards flow rate (CFM)
I bought 2 new fans from ebay uk for about £30 each from memory, have had them fitted for about 3 months without issue, car runs a bit cooler as well although this must be down to the new rads as opposed to the fans, have not had any scorching hot days to fully test.
I still have the original fans which I may get refurbed sometime but nothing wrong with the ebay jobs as far as I am concerned, I thought they were worth trying anyway at that money.
Will try and find a link, cant remember exact size now without checking invoice at home.
Regards
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Cactussed
4,320 posts
82 months
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TISPKJ
1,201 posts
76 months
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They are a bit lazy in so much as most of there items are using the same photo, its just size and spec that change, which was confusing. I did use the 16" jobbies as you say 120w. Picture below is not 16" fan but you get a 16" fan when you buy if you see what I mean. http://www.ebay.co.uk/itm/Universal-Electric-Radia...
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ric p
Original Poster
104 posts
138 months
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A bit more investigation done and connecting the fan direct to 12v gets it working. Thus the issue is elsewhere, possibly the sender that triggers the RH fan. Anyone know where this is?
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TISPKJ
1,201 posts
76 months
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You do know they dont trigger at the same time dont you ? as far as I am aware NS is triggered by water temperature and OS by oil, or at least thats what it seemed.
sender for water is in the top NS rad
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Cactussed
4,320 posts
82 months
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That is spot on. RH fan is triggered by oil temp.
I forget where the sender is though, I seem to recall its at the botttom of the oil tank?
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TISPKJ
1,201 posts
76 months
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The OP same post on ferrarichat suggests that the senders we are talking about control the gauge on the dash AND an ecu that triggers the fans.
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