Junkman, thanks for the info about the 3-4 flare. I've been battling this on mine and it looks like I will need to establish a baseline of verifying pressures and checking the vcv. I've tried adjusting the bowden cable but it isn't helping. Before, it was only an occasional slight flare, but now that I've replaced the rear diff. with a 2.47 it is really pronounced and nearly constant.

tyl64, another possibilty I read about, here on the forum, was the linkage for the manual shut off lever. Another forum member mentioned that the linkage was causing the IP to go slightly into shut down. A very slight adjustment of the linkage cleared the problem. This may be due to wear, over time, to the linkage pivots.

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Sam

84 300SD 350K+ miles ( Blue Belle )