resonator rattle lexus rx 330
Have a 2005 RX 330 and took car for service last week - brakes and they tightened exhaust/tail pipe. Day after service, heard rattle only at hightway 55mph+. Took it to shop and they removed some stones from muffler and tightened the end. Still rattling. Brought car back again today; now they say resonator (mid piece with pipe) is completely rusted and should be replaced. This is a 2k+ job; car has 105k miles. (I am suspicious of this shop because also told me needed struts and got 2 more opinions and both said struts are fine...) But brought it back to them because they had worked on the muffler last week. After hearing this, I called a couple of muffler places and will get 2nd and 3rd opinions; they both said over the phone that it is unusual to see resonator go at that mileage. Also said may be able to weld it or it could just be the heat exhaust plate attached to resonator that needs tightening or replacement.
Anyone with experience of replacing the middle (intake) resonator and related pipe, and if so, at what mileage? Any cheap fixes available? Btw, car has been garaged.
Last edited by quantfutur; 03-04-11 at 04:54 PM.