FAULTY ECU COMPUTER RESULTING IN HARD JERK WHEN SHIFTING BETWEEN FIRST AND SECOND GEAR. THE ENGINE REPAIR UNIT GOES BAD AFTER 100,000 MILES. MULTIPLE VEHICLES REPORTED THE ISSUE AFTER EXPERIENCING FUEL INDUCTION PROBLEMS AND OIL LOSS RELATED TO BAD .GASKETS. CAR STARTED JERKING ON THE HIGHWAY CAUSE A REAR END BUMPER COLLISION WHILE INTRAFFIC.