Vibrating/shaking at idle
A few months ago I started noticing a little vibration/shaking at idle in my 3.0 Edge automatic. This truck has around 122k miles on it and apart from this vibration the truck still runs great. I started looking for the source of the problem by scanning the truck but did not find any codes nor the check engine light was ever on. Tempeture, oil pressure are fine, I replaced the timing kit since the chain had already some slack and I was also hoping that could solve the problem but the vibration did not go away. On its next tune up I decided to put platinum spark plugs and cables and the Idle Air Control Valve (IAC) was also checked but was working properly so the source of the vibration is still a mistery.
I don't know if this is related to the cam synchronizer and positioning sensor as I read these units are good for 80-100k miles. I am hoping you guys can point me in the right direction on what to check next. Thank you.