Suddenly super lean while at cruise

[scheides]

EclipseGST: thanks man, I'll try these too.

Remember though, this happens ONLY at partial throttle (10-15%) while cruising in any gear around 3000+ rpms. I can run through the gears to redline at full or part throttle (50% ++ or whatever) and the car drives great, no lean condition on wideband. no oil leaks, no fluid leaks.