There is a TSB for this. Its an issue between the PRNDL switch and the GEM. See below
STEERING - CONTINUOUS REDUCTION IN POWER STEERING ASSIST WHEN SHIFTING INTO "REVERSE" OR "DRIVE" - VEHICLES WITH 3.0L ENGINE
STEERING - INTERMITTENT REDUCTION IN POWER STEERING ASSIST - VEHICLES WITH 3.0L ENGINE BUILT THROUGH 5/13/96
This TSB article is being republished in its entirety to revise the Service Procedure.
There may be intermittent reduction in power steering assist during braking from 80 km/h (50 mph) on some vehicles. For this concern, the resolution may be a revision to the Generic Electronic Module (GEM) calibration.
On some other vehicles, there may be a continuous reduction in power steering assist when shifting into "Reverse" or "Drive." The customer may have noticed a loss of radio sound, power window and lock functions. For this 3.0L concern, the cause may be internal shorting of the Transmission Range (TR) sensor.
For those vehicles with intermittent reduction in power steering assist, refer to the following Service Procedure, Step 3.
For those 3.0L vehicles with continuous reduction in power steering assist when shifting into "Reverse" or "Drive, " replace the TR sensor. Refer to the following Service Procedure for details.
1. Perform normal diagnostics for high steering efforts found in Section 11 of the 1996 Taurus/Sable Service Manual.
2. For a continuous reduction in power steering assist concern on 3.0L engines when the transmission is shifted into "Reverse" or "Drive, " disconnect the harness connection from the TR sensor and retest. If the steering functions correctly, replace the TR sensor (-7F293-).
3. Perform diagnostics for the GEM, refer to the 1996 Taurus/Sable Service Manual, Section 18-04. Observe any codes that have been logged by the GEM. If no codes have been logged, and communication with the GEM functions properly, then replace the GEM with a revised GEM (-14B205-) which has a calibration adjustment. Refer to the 1996 Taurus/Sable Service Manual, Section 13 for replacement details.
PART NUMBER PART NAME F7DZ-14B205-AB Generic Electronic Module (GEM) F7DZ-14B2O5-BB GEM (Gulf coast country vehicles) F5DZ-7F293-AA Transmission Range (TR) Sensor (8-Pin connector) F6DZ-7F293-A Transmission Range (TR) Sensor (12-Pin connector)
OTHER APPLICABLE ARTICLES: NONE
WARRANTY STATUS: Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage
OPERATION DESCRIPTION TIME 962505A Replace Generic Electronic 0.4 Hr. Module (GEM) 962505B Replace Transmission 0.2 Hr. Range (TR) Sensor
CONDITION BASIC PART NO. CODE 14B205 42
OASIS CODES: 102000, 112000, 207000, 303000, 501000, 503000
Thursday, June 10th, 2010 AT 1:12 PM