I just picked up a 1987 Mustang LX notchback really cheap. It has the 2.3L 4-cylinder, with an auto trans. Whenever I need to accelerate fast (don't judge me), there's almost no power. I floor it, and it seems like I'm only barely pushing it. It kind of shakes, and after a few seconds, after it gets around 1500 RPM, it starts accelerating nicely. Also, when I floor it, the pedal makes a wierd crunching sort of noise. What's wrong?
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