Just went for a quick drive with the jumper removed entirely and the car drove much better. Better throttle response, AC cools better when not moving, and there didn't seem to be any indication of RPMs creeping up. The revs remained stabled the entire drive.

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1984 500SE
1985 190E 2.3-16
1997 Jeep Wrangler
1998 Dodge Durango SLT 5.9
1951 170S
1996 Ford F350 7.3 ZF5 swap