I haven't had a chance to clean and check the egr, but here are the latest symptoms: now it is missing during acceleration to highway speeds, and the last mile or so it didn't shift until 4200 rpms at stoplights. Still no CE light, however.

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TomO
94 E320 Wagon, 170k, totalled in 2006
2002 BMW 525i Wagon, 75k
1991 BMW 318is (two of 'em)