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Oil Cooler Flow Check

  1. With transmission filled to proper fluid level, disconnect oil cooler return line from transmission. See Fig 1 . Place container under oil cooler return line.
  2. Add one extra quart of Mopar Mercon ATF to transmission. Apply parking brake. Start engine and allow to idle. Place gearshift in Neutral. Check fluid flow from oil cooler return line.
  3. If fluid flow is intermittent or takes more than 20 seconds to obtain one quart, replace radiator or external oil cooler. Reconnect oil cooler return line and fill to proper level with Mopar Mercon ATF.
Fig 1: Identifying Oil Cooler Lines
G92D13451Courtesy of CHRYSLER MOTORS.
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