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-   Everything Electrical & Electronic (https://www.gmforum.com/everything-electrical-electronic-108/)
-   -   radiator fans only run with a/c on. (https://www.gmforum.com/everything-electrical-electronic-108/radiator-fans-only-run-c-292383/)

cronic816 06-06-2010 05:44 PM

radiator fans only run with a/c on.
 
I have a 2004 bonne se and my fans quit working,engine lights came on. I changed the cool fan 1 and 2 / hvac relays under the hood and still no good. I then got a new thermo and sincere below it put it, Still no good, only way the fans run is if I unhook the pigtail to that sincere or turn the ac on. Any ideas?

Danthurs 06-06-2010 05:52 PM

Fan 1 comes on at 219* and turns off at 212*. Fan 2 comes on at 228* and turns off at 221* If you had a worn out thermostat and the engine was not heating up to full temp the fans wouldn't turn on. What temp thermostat is the new one? A 180* or a 195*?

cronic816 06-06-2010 05:58 PM

I'm thanking its a 195, before I put it in my gage out not reset back at home and start at 200, now they are normal. When we ran the codes it came up as bank 1 and relay/thermo, he said it was good to clear it out after the new parts.

Danthurs 06-06-2010 06:05 PM

If that parts have been replaced, then yes, reset the code and see if it comes back.

cronic816 06-06-2010 06:14 PM

Thanks for the help, I let the car run for about ten min and they came on for a few then off again, so I'm thinking its good?


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