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Recent content by Fordranger1994

  1. Backfiring on hard acceleration. Only 4 cylinders being tested during KOER test

    I have a 94 ranger 4.0 and on hard acceleration it begins to backfire really bad. If i ease into the throttle then floor it there is no back fire. As im cruising i also get a bad shudder/shaking until i floor it again and it goes away. I get no codes while testing KOEO and during the KOER It...