I have a 2006 F115. At wot, the rpms fall off, and runs rough, it does return to wot after a few seconds. My first thought was the injectors, but then I noticed that if you operate the trim switch while this is happening, it causes the engine to cut-out as it is moved up or down. This does not happen below 3/4 throttle. Could there be a problem with the trim switch wiring, grounding out ? This Trim switch issue will happen even when the engine is running normal above 3/4 throttle
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