2008 Mercury Mariner Problem Reports

RepairPal Verified 2008 Mercury Mariner Problem Reports

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Looseness in the steering shaft and steering shaft coupling U-joint can cause a knocking / popping noise from the steering column when turning. The steering shaft and coupling U-joint will need to be replaced.

A defective power steering return line can cause a knocking noise when turning or going over bumps, especially when the engine has reached normal operating temperature. The power steering return line should be replaced.

The transmission oil cooler may develop a leak, which will require replacement to repair.