Oil Cooler Flushing
WARNING: This page is about a different car, the 2002 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Before power flushing, inspect the hoses/lines and clamps. Power flushing must begin with back flushing followed by forward flushing to quickly dislodge the restriction. If back flushing is not performed before forward flushing, the restriction could further reduce the ATF flow through the internal mesh type baffle of the cooler and flushing will not be effective or possible. Be sure to inspect the lines (hoses/pipes) for cuts, crimps (pinched), cracks or any other damage before reusing them. If any problem exists, repair as necessary. Always use new clamps when replacing hoses.
NOTE:
Power flushing should be performed very carefully when removing the accumulated debris from the fluid baffle, otherwise the debris cannot be removed or the problem becomes even worse. The contaminated cooler line (oil pipes and hoses) and auxiliary cooler (if equipped) must be flushed completely when transaxle is overhauled or replaced. Performing back and reverse power flushing 2 times each does not work because debris or particles flow out from the feed pipe side of transaxle.
NOTE:
Manufacturer recommends using Kent Moore (J-35944-AMAZ) flushing kit or OTC (60081) portable torque converter and oil cooler cleaner or equivalent.
- Using the power flushing equipment manufacturer's instructions, connect equipment so the flushing fluid flows in the opposite direction of normal fluid flow. See Fig 1 . Flush oil cooler/lines until discharge fluid is clean.
- Connect power flushing equipment so the flushing fluid flows in the direction of normal fluid flow. Flush oil cooler/lines until discharge fluid is clean. After performing flushing procedure, check fluid level. See CHECKING FLUID LEVEL & CONDITION .
NOTE:
If the cooler can not be properly flushed using recommended equipment, send the radiator out for sublet cleaning or replacement.