I bought a 2006 Sonata V6 3.3L with 137k on it about a month ago. Engine and Trans is great, but I noticed an issue that developed within the past week and a half or so.
I am one to always engage the parking brake when parked, to relieve pressure on the parking paw in the transmission. After about a week of heavy use of the parking brake, I began to hear a slight ‘clunk, clunk, clunk’ coming from the rear passenger wheel (it actually sounded like something was loose in the trunk, but ruled it out). The ‘clunk’ sound at first only happened going over rough or bumpy roads, but within the past week or so it’s gotten louder and more consistent. It now ‘clunks’ regardless of speed or road surface.
I used the parking break today for the first time while the car was in motion, and when pulled it sqreached very loud, didn’t really stop the car, but the ‘clunk’ became very loud while the break was pulled - shockingly loud, actually.
A couple of days ago I took the rear passenger tire off while jacked up, and spun the wheel. With neither the parking or regular breaks engaged, the wheel made a ‘clunk’ sound very similar to that it makes on the road. Took of the Tire/Rim and spun the Rotor, to hear the same sound. Attempted to wiggle the Rotor and found no play at all.
At first, the clunk went away when you pressed the floor board brake pedal, even just a slight bit stopped the noise. Now it doesn’t seem to stop it any longer.
My main idea is that the parking brake in the Rotor is the culprit, given that the issues didn’t arise until I started using the parking brake - and the fact that brake appears to not work very well. However, my dad tells me he thinks it’s a wheel bearing. I don’t think it is - as its not making any metal on metal sounds, nor is it very difficult to rotate the Rotor while jacked up.
Any opinions on what this could be? Don’t have the funds to pay a dealer to look at it.