Noisy idle in cold weather with a 1.8

[tobypine2]

So it’s finally gotten below freezing here for a bit, but doesn’t matter to me much since I work third shift. I go to work when it’s warmer.
This morning since I’m changing the oil in the daughter’s car, she took mine to School. Started it up and came running back in 5 minutes later when it started normal idle telling me it’s making a horrible sound.
I go out and hear a clacking, like the fan has come off its axle. It’s not mechanical like low oil or cold oil making valves clatter. This is more plastic on plastic. On the front of the engine. Started going away when she revved it, then started again after letting it idle. As the kids had to go, I told her to keep the revs up and after dropping one off and getting to school she said she didn’t hear it again. Of course I’m sure she had radio on so wasn’t paying too much attention.
This hasn’t been a problem so I don’t know if freezing weather is why or something more sinister. Any suggestions? All are welcome

 

[rojoes]

Evaporator Canister Purge Valve seems to make more noise on cold start ups I have noticed

 

[tobypine2]

Turns out it’s the fan itself. Started doing it after I started the engine this morning and I popped the hood in time to see the fan wobbling and shaking the whole assembly. Once it warmed up it stopped. Wondering if it’s tied into the thermostat issue. But never seen a fan wobble like it did.
Wish I could attach the video I took

 

[VDrums2112]

Turns out it’s the fan itself. Started doing it after I started the engine this morning and I popped the hood in time to see the fan wobbling and shaking the whole assembly. Once it warmed up it stopped.

Sounds like a cold or bad bearing on the fan if I had to guess.