Right side fans quit

No, just one sensor (thermoswitch) should activate both water fan relays.

Many of us Most likely a "fried" terminal in the j white connector (you can't see the fault unless you unplug the connector -- and you'll have to unplug the k connector to get access to unplug the j connector). See this thread for description/photos:

http://www.ferrarichat.com/forum/showthread.php?t=318820

 

Thanks for the feedback confirming the cause of your problem. (You might want to have a look at the fuel pump connections, too, to see if they are starting to suffer from the same disease).

Ricambi America caries both the female metal terminal and the white connector shells (not sure which one is "j" -- the 4 have different keying strip locations that makes each one unique):

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You're lucky if the male pins on the PCB and/or the PCB itself didn't take a beating too. If you do a search on "TR white connectors" you should get many threads from prior discussions -- most of us have either made alternate repairs to bypass the white connectors or sent the PCB to Dave Helms at Scuderia Rampante for his modifications/additions (which also bypass the commonly troublesome high current circuits) since another failure seems likely/unavoidable with the stock parts.

 

Dave, to get you back on the road quickly you may get lucky by removing the pins as Steve describes above, lightly sanding the contact spots (pads) on the pins, and trying to re-bend them to where they make contact (or close) with each other again. Re-insert the pins in the white connectors (after bending the retaining tabs out again) and reinstall the connector in the fuse panel. This worked for me though absolutely should only be considered a temporary fix until more permanent repairs can be made. You can read all day in many threads here in the TR forum but I can save you some time with a few points:

1) As several of the high amp electrical motors/pumps wear, they require more power to operate. This increased demand draws more current through the circuit than originally designed and builds heat. The heat is concentrated at the fuse panel and connections, as you have discovered. The multi-layered fuse panel PCB can break down, the connectors melt, and the pads on the pins open up from the heat. The result is what you have now.
2) Primarily five affected circuits: LH and RH water fans, LH and RH fuel pumps, Air conditioning circuit. Some have reported issues with the oil fans as well but oil cooling typically does not need fans. I have a 40K mile car and my oil fan circuity is perfect whereas my other circuits melted.
3) Owners have replaced fuse panels (back when they were available), female pins and white connectors only to find the problem return. The root of the problem is in the individual circuits and the electrical components within them. Replacing the pins and connectors is a great cosmetic fix but likely only a short-term physical solution.
4) As Steve points out there are several avenues for a more permanent solution. Fixing sooner rather than later will save you a lot of heartache.

Best of luck, let us know how things work out.

 

The big issue is that the fuse box right out of the box was at its limits.. The slightest increase in draw causes, plain overload and melt down. The white connectors is not going to fix anything, the issue will return sooner than later plus if you do not address the fuse box now the chances of the adjacent circuits getting effected raises.. These boxes are hard to find and you really need to take care of your existing box.. Send the box to Dave Helms at Scuderia Rampante, get the mod intall it and the issue is put to bed. A new fuse panel will not solve the problem either. The longer you wait the more damage can be done to the circuit boards in the fuse box.. I recommend all high draw circuits to be addressed.. I never did my oil cooling fans because in almost 5+ years of ownership in the dead heat of summer, my oil temp has never reached 210 degress (when oil fans kick on). The fuse box is the beginning of starting a solid foundation in the TR. Its a must.

R

 

Sir.. with all due respect.. Get your fuse box out of the car and Dave can turn it around for you in no time. Your quick fix has the potential of ruining your fuse board for good.. Be smart and all in all you can have this issue resolved in 7-10 days max.. Plenty of time to drive her and enjoy the summer..

R