It looks like the fan clutch respect. visco clutch is on the way out.
If it is wobbling already, that is really not that good and could even damage more.
H3re I copied some of the test methods people use:
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My own test for fan clutch is this.
I wrap a thick towel a few times around my hand. With the car running and warmed up after driving, I gently put the towel wrapped hand on the spinning fan blade. If the fan clutch is shot, it will stop spinning quickly and with little pressure and no risk to the fan blades or your hand. If the clutch is locked-up, it will not stop and therfore is good. Be careful. It doesn't have to be a dangerous test if you use a light touch.
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Another fan test
I was overheating and tried the paper towel trick and found my fan clutch was bad, bought a new OEM, only to find they all are easy to stop unless they are really hot.
What I found, and maybe this is what you are doing, was that the fan clutch works by ambient heat. (duh) BUT, if the hood is open/up, no matter how hot the engine gets, the fan clutch won't do much. BUT, if you run the engine until hot -- just driving around for a few minutes -- then stop and let it sit with the hood closed for maybe 10 minutes, the ambient heat will have the fan clutch tight as a drum. Now open the hood and crank the engine and the fan should blow your hat off.
And it will probably quit within one minute. Its darn loud when its engaged. I now know the sound it makes and notice the greater air flow under the car that I can reach down and feel while sitting in the car with the door open, and realize that it is usually engaged when I first crank it, then it quits just a moment later. Even first thing in the morning when its cold.
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