Three problems related to power steering pump have been reported for the 1997 Mercury Sable. The most recently reported issues are listed below.
During rainy weather, the right front tire splashes water into the engine fan belt assembly causing the fan belt to slip and squeal. The power steering pump fails to turn resulting in hard steering and loss of vehicle control, the generator fails to turn resulting in battery light illumination. The right front wheelwell baffle assembly installed by the mfg does not adequately shield the fan belt assembly from rain water intrusion. A temporary, thought inadequate fix, is to apply "belt dressing" to the fan belt. Ref complaint #551260.
When driving in wet conditions and making a right hand turn from a stopped position, power steering is lost and engine power is reduced. Also, dashboard warning lights illuminate. This loss of power and steering while entering traffic is alarming! it is obvious that the belt is slippling due to the moisture being sprayed up from the passenger side wheel well. I have inspected the belt and it is in fine condition. There is no manual adjustment for the belt tensioner (spring loaded). This problem started at 24,000 miles. I have searched the internet and have seen another similar complaint. I belive that this problem must be reviewed before someone loses steering while entering traffic and is killed! I realize that replacing the belt may make the problem go away, however, this is an obviou.
Power steering pump failed at 13,000 miles due to a defective core. Dealerr replaced it another pump which also became defective within 2 days.