There is supposed to be a Nub on the Plastic HVAC system cover... The cover deteriorates with heat over the years and eventually disintegrates... To properly fix the issue the Insulation Barrier must be replaced...
I have not replaced mine.. But I adapted a piece of Plastic Pipe of some sort to repair mine and to hold it in place I used some Wire ties.. Its rigging at its finest.. Its been about 2 years and its still there...lol
If for any reason I ever have the engine and trans out I will replace the Barrier with one from a new car if possible..
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