Back Again! OK - we are sure now that I don't have a tranny problem, I have replaced the spark plugs, increased octane, added the Chevron fuel additive. Anytime, in neutral or driving, if the engine (tach reading) goes above 3,000 rpms it drops back down and will not go higher. The engine idles fine, It drives real well (even with AC on) unless I exceed 3,000 rpms (this means I slowly accelerate and can only top out at 65mph on the highway). I've looked for loose vac lines - but I am not sure where they all are. What is a puzzle, is this 3,000 rpm limit - it doesn't matter if I am in neutral, accelerating, or just driving down the highway, it happens at the same spot???