Re: fluctuating idle only when cold????
The leak might be coming from the hose that runs from the underside of the upper intake manifold, out towards the front, to the Evaporative Emmisions Canister (happened to me).
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91 Coupe: FMS 1 5/8 unqual shorty's, BBK off road X-pipe, Super Duty T5, Pro 5.0 short shifter, 2.73 rear, G3 alt, MSD coil, dist, no smog pump, oil cooler, 195K miles, 14 deg timing, 23 mpg city/29 mpg highway @ 65 mph.
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