Sounds like it needs to be replaced. If this is the flex coupling at the front of the converter as in the image it is part of the converter like the Pep Boys guy said. However, you might find a shop willing to cut a section out and weld in a short flex tube to replace it. There are some made that way. However, depending on your location and their pricing it might end up being cheaper to just replace the entire thing over a repair. In a state like CA oy NY where they require a CARB certified unit a replacement could be well over $1,000.00 while a repair might be $200.00 or so. The reason for no power is that the O2 sensors are now getting very wrong data and the PCM doesn't know what to do with that data and the engine has no power. It needs to be repaired as the way the PCM is likely running it can cause serious damage to the engine.
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Friday, April 8th, 2022 AT 2:37 AM