2011 LR4 (133K). Recently had both side of injectors replaced. For some reason the 4 cylinder had to be replaced twice after the initial repair. I am now getting catalytic codes which my mechanic is "pretty certain" it is the catalytic converter from fuel dumping in injectors from issue with fuel injectors before replacement, but was advised by mechanic it "should" run fine with check engine light on solid until catalytic converter replacement. Now, it will just die, all lights (cruise control, restricted performance, and sometimes many other random warnings) will come on. I turned off and back on and it will drive until it happens again 10 minutes or so later. Today, in 100 degree weather the lights and dying happened immediately. Could this be a catalytic converter issue or something else? I have went through my savings trying to fix this LR4 and cannot afford to just throw money at a maybe problem. Please help!

 

No one seriously???

 

No, I can’t think of any reason this would relate to the catalytic converter. This sounds like a dying battery or bad alternator, but could be a whole host of other issues, e.g., faulty battery management system, loose ground wire someplace, water damage to central junction box in the passenger compartment (sunroof drain leak?). Do you have a scanner to gather codes?