don_nsx Posted March 31, 2008 Share Posted March 31, 2008 Check engine light came on in my 2001 LS 430. Investigation found a small exhaust leak in the "Y" pipe behind the engine. Checked dealers for the best price on a "Y" pipe and found the best I could do was $963.00. Decided to see if some repair could be visited on the pipe. Found that the "heat shield" that encases the pipe after the O2 sensor doesn't have a clamp holding it firm at the forward end and the vibration of the "heat shield" against the exhaust pipe had worn a hole in the pipe. I found both sides of the "Y" pipe worn from the "heat shield". My solution, after welding the pipe, was to use a couple of gear clamps to hold the forward part of the "heat shield" from vibrating against the exhaust pipe. Two gear clamps sure beats $1000.00 Don Quote Link to comment Share on other sites More sharing options...
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