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T-Series Thermostat Switch Question

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M

MGBGirl

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Alright! Time for the radiator fan question. At about what temp should my radiator fans kick on? We have shorted across the fan's thermostat switch and the fans do indeed work. Just concerned that the thermostat is not working because the temp goes up and the fans don't kick on by themselves.
 
Two ways to check if the switch is good or bad. 1) attach the leads of a multimeter to the terminals of the switch, set the meter to read ohms on the lowest scale, put witch in a pan of water and with a thermometer and bring the water to a boil - see what temperature the switch closes (reads 0 ohms), if it closes at all. 2) replace current switch with a replacement.
Cheers,
 
DNK said:
This it?
Fan Switch
Click to expand...


Well ours has 2 separate spade terminals. It must be an unusual one - can't seem to find one on the internet like ours. Probably replaced by the one you posted, then I would have to come up with a new connector.
 
Well, crap, it looks like I have the $60 one. Kinda hard to tell by those pics though. Why the huge price difference? Do you know if they are interchangable?
 
Be sure to fit safety wire through the rad core over the switch. These are pron to "popping" out and cause a lot of $$$'s.
Cheers,
D.
 
What he (Grantura_MKI) said... Pin th' "switch" to the rad with whatever ya have to hand... wire, zip-tie, whatever. Both those have two terminals, they're "thermocouple" switches. Just get the "cheaper" one and change the terminal ends,
 
Doc, I wonder how come the switch Moss has for cars up to 511290 is $15.95 and the switch from # 511291 up is $49.95? Crazy huh. PJ
 
supply/demand I guess. The $16 one is an "Otter" switch, R&R'd plenty of 'em.
Learned that you really should replace the grommet at the same time, too. :shocked:

Tie-wraps or safety wire kinda-sorta help keep it in place. Always considered fabbin' up a "retaining device" with aluminum sheet but never bothered.

If ya use wire as a retainer ya have to be aware and NOT allow it to touch the contacts of the $50 unit, BTW.
 
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