Been watching this thread with interest. In April had very similar problems. Turned out to be two part. First, a bad injector, running rich, caused the ECU to lean down all injectors. Second, maladjusted throttle switch. Problem was defined by disconnecting the O2 sensor, ran great then but very rich. Replaced O2 sensor, problem still there, isolated to the #2 injector, replaced injector, most of problem solved. Adjusted throttle switch, ran like a dream since. Some indication now of throttle switch slightly out of adjustment but not a major issue. I only mentioned this because no one has mentioned throttle switch adjustment as possible cause of the 'long hesitation when stepping on the gas'. |
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