I have an L not an S series however I have noticed when coasting out of gear my idle stays high based on vehicle speed. It stays at 1500 or so above 30 mph. As I coast down to stopped the idle returns to normal. I have also found if I kill it and restart it while rolling everything comes back except the cruise control. I do alot of fuel cutoff decel but very little engine off coasting due to loosing the power steering in this big heavy car. When I drove a Metro the engine was off quite a bit on my commute.
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02 Saturn L200 5 speed- 265k miles
84 Gmc 6.5 na diesel K30 4x4, TMU
2006 Lincoln Navigator, 215k miles
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