Tensioner is already replaced, and it was bad. If your saying the groaning stopped after a regulator replacement maybe I should cancel my order for the alternator and just get the regulator

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1999 E300 TD 190,000
1996 Passat TDI 225,000-sold
1996 E300 120,000-sold
1998 Jetta TDI 186,000 -sold
1983 Chev Suburban C20 6.2-sold