I have a 1993 Grand Cherokee limited 5.2L . My problem is that it idles with a little "miss" . When you put it in gear it "misses" more, fills and sound like something is "pulling the engine down" when I take off driving around 2000rpm it spits and sputters and wants to die I let up off the gas and its fine . I have changed the crankshaft sensor, flow control sensor, throttle sensor, coil, distributor cap, spark plugs, fuel fitter, checked fuel pressure, checked vacuum pressure and replaced a lot of lines, and took off throttle body off and cleaned it.