[s-cars] Dreaded hesitation is back

[Wylie Bean]

Stock 92 UrS4. Have done nothing since it was going on about 4 weeks ago except buy a new ignition switch, which is in my glove box.  I've run 3 tanks of cheap 87oct gas through it and nary a hiccup. Filled up w/Shell VPower 93 yesterday and of course, it's back. Only occurs @ very slight throttle application, very random, sometimes on accel, sometimes @ 70 mph cruising speed in 5th. Further evidence that my weakening stock coil(s) can't burn the higher octane fuel properly? My car hates Shell? Sheer coincidence and it's completely unrelated?  WTF?
Wylie Bean
TheRingmeister at triad.rr.com
90 cq
91 90q20v
92 UrS4
08 Q7 3.6
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