TJ Emissions Issue

  • Failed inspection this morning for, among other things, a P0441 code - EVAP Emission Control System Purge Flow Fault. Could this be related to the gas cap? Or is there something else I need to look at?

  • Icky had the same code on her TJ. Further digging, via hooking up a smoker at Scotti Muffler in Camden, revealed a crack in the LDP housing under the hood on the driver side fender well area as well in some of the hoses connected to it. The LDP is a leak detection pump and we ended up changing that plus all the rubber hoses going to it. At the very least it's a location to start looking around to see if you can find any obvious cracks or torn rubber hoses. Good luck!


    p.s. I'm taking her Jeep through the lanes this evening - wish me some luck too!

  • on my XJ there was a cracked hardline in the back where the fuel line goes to the tank on the frame rail

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