Help! Put in new modulator and won't shift past 2nd 81 300CD
With vacumn on spec with old modulator it would shift 1-2 VERY quick then 3 and 4 all too soon. Removing vacumn helped some but 1st shift was very hard. Put in new modulator Hard shift to 2 (bark tires) then not shift to 3rd at all. Have tried some adjustment to modulator but no help. If I disconect vacumn , nothing changes.