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1g electrical problem with fans

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beat90tsi

15+ Year Contributor
339
0
Oct 28, 2004
pittsburgh, Pennsylvania
I have been turning on my fans by turning on the AC which is currently not in the car.
I noticed on my logger that my coolant temp was 201, which is a bit high, I normally run between 192 and 197. So I turned the fan on manually with the AC, but it did not turn on.

I checked the fuse for the fan, and it was fine, I checked the relay for the rad fan and when I took the cover off the relay, if I pressed in the one side of the relay, forcing a connection, the fan would come on. I thought it was a bad relay, but I swapped in numerous other relays out of my car and another car and the fan did not come on.

The only way for me to get the fan to turn on is to physically force a connection inside the relay. Good to know if I ever have a problem overheating, but certainly not a solution as the fan will not turn off when I do that.

If anyone has any ideas, I'd greatly appreciate it. I'd like to get my fan to function normally again.

(I have the AC fan out, this is just dealing with the main cooling fan, which also turns on with the AC)
 
same problem with my car, check the temp probe in the radiator. If that is corroded or the wires to it are, it won't turn on.
 
i checked those wires, and they appear to be fine, but i will do a more thorough check with the voltmeter for continuity

i know it's not coming on at temp like it is supposed to, but it is also not turning on with the AC controls, but is turning on when i jump the relay, which indicates a problem other than the temp sensor wires
 
Any update on this?

Cause I have a similar issue with my 1g rad fan not coming on!

I have change the thermostat, thermo switch (bottom of rad) sensor, checked the 30amp fuse...found it busted. Replaced it and still nothing.

I also made sure that I had no air bubbles in the system.

I am at a lost here...

Will
 
same prob here i have to put the relay in on a angle for it to come on. let me know if u get it fixed iv bee n trying to figure it out for 3 months.
 
Same problem here. I replaced the thermo switch about a month ago and it seemed to fix it at first, yet about a week ago my fans aren't turning on again. Those thermo switches aren't cheap either, $30 a pop ain't worth it for a couple weeks. So I tried to hook up an on/off switch to my fan relay and I kept blowing fuses.

I've gotten fed up with this problem, anybody know of a fix or a good aftermarket fan kit that I could install with on/off switch???

Please help.
 
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