I have an 02' LTD liberty. Today started a knocking sound from the front of the engine. At first i thought it was the fan. Checked my oil and was low, but not empty. Put in a 2 qts. Still has a knocking sound. (the car has sat for a month due to me having knee surgery)
I noticed that the metal piece behind the bottom left belt roller wiggles a bit. The knocking is while idle and revs up when on the gas. Is it possible for the a/c compressor to cause the noise? If so is it hard/expensive to replace?
Is there anyone out there that has had a similar problem? My father in law thinks its the top left roller that is busted and is where the knocking is coming from.