Do you have your free EPC membership? http://epc.startekinfo.com/epc/home.jsp You provide a CC# just to verify USA location--I have never been charged. It will change your life.

Something may very likely be haywire with the "reaction valve" (#307) and its associated "pin" (dogbone, #310) on the other side of the band. The bone fell out, the valve is jammed, that side of the band broke off, etc. All shown on page 5 of the relevant 126.120/722.303 Japan (USA 722.416 is obviously wrong) page.

I seem to recall that, on my SDL, I had to pull off the shifter mechanism to be able to see up there to replace the valve-to-housing external seal. Perhaps the PO/shop messed that side up during the B2 upgrade and, as you've noted, it's never been right.

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James Marriott
2003 Buick Regal
1983 300D (228k, frau Auto)
1996 Suburban K2500 (192k, 6.5 turbo diesel/4WD towmaster 10,000)
www.engineeringworks.biz
1987 300SDL junker 170k
1982 300SD junker, 265k