Question about 1998 Mercury Sable

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I read the solution from jturcotte regarding the 98 mercury sable with the bad vss. I apreciate the view of the the transmission.but can't seem to locate it. Do I have to lift the car significantly to view from bottom / An Ammco shop said the harness melted on the vss. do i have to peel the electrical tape from the wiring to locate it or can I get another harness and connect one end to the sensor on the transmission and the other end to the point where it connects to engine.

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You're going to need to replace the harness.

Posted on Mar 19, 2011


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VSS - vehicle speed sensor maybe . Does the transmission shift properly ?

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vss transaxle housing-jzmswer1nj4gc4lhdiyxrsgh-5-0.jpg

vss wire colors-jzmswer1nj4gc4lhdiyxrsgh-5-2.jpg

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1998 mercury sable.need to change vss,does this have to be done from underneath vehicle'am a little afraid of breaking exhaust bolts

Vehicle Speed Sensor (VSS) Removal
  1. Raise and suitably support vehicle.
  1. Remove dual converter Y-pipe from exhaust system. -
  2. Remove heat shield from transaxle.
  1. Disconnect vehicle speed sensor (VSS) electrical connector.
  1. Remove VSS retaining bolt and remove VSS from transaxle.
  1. Follow removal procedure in reverse order.
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Mar 22, 2011 | 1998 Mercury Sable

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My transmision slips and the speedo quits working at the same time in my 1998 mercury sable

Hello wsarah03,

There is a Vehicle Speed Sensor (VSS) mounted on the transaxle, that is a good place to start. The VSS tells the powertrain management system when and how to shift the transmission and also gives the speedometer it's signal.

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Mar 20, 2011 | 1998 Mercury Sable

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1994 GRAND MARQUIS Odometer stopped working, tridometer aswell

If the odometer and tripmeter stop incrementing their mile values, then the VSS or vehicle speed sensor is bad or has become disconnected.

Vehicle Speed Sensor OPERATION The Vehicle Speed Sensor (VSS) is a magnetic pick-up sensor that sends a signal to the Powertrain Control Module (PCM) and the speedometer. The sensor measures the rotation of the transmission output shaft or the ring gear on the differential and sends an AC voltage signal to the PCM which determines the corresponding vehicle speed.
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  2. Disengage the wiring harness connector from the VSS.
  3. Using a Digital Volt-Ohmmeter (DVOM), measure the resistance (ohmmeter function) between the sensor terminals. If the resistance is 190-250 ohms, the sensor is okay.
REMOVAL & INSTALLATION Fig. 1: Detach the connector for the VSS sensor 91194p27.jpg
Fig. 2: Remove the retaining bolt for the VSS sensor and . . . 91194p28.jpg
Fig. 3: . . . remove the VSS sensor from the transmission 91194p29.jpg
Fig. 4: Pry the retainer for the VSS gear off and . . . 91194p30.jpg
Fig. 5: . . . remove the gear from the VSS 91194p31.jpg
  1. Disconnect the negative battery cable.
  2. Raise and safely support the vehicle securely on jackstands.
  3. Detach the connector for the VSS.
  4. Remove the VSS retaining bolt and remove the VSS from the transmission.
  5. Remove the driven gear retainer and the drive gear. To install:
  6. Inspect the O-ring on the sensor and replace if necessary.
  7. Install the driven gear and the retainer.
  8. Place the VSS into the transmission.
  9. Tighten the retaining bolt to 98-115 inch lbs. (11-13 Nm).
  10. Attach the VSS electrical connector.
  11. Lower the vehicle.
  12. Connect the negative battery cable.
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Oct 23, 2010 | 1994 Mercury Grand Marquis

1 Answer

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Check the transmission fluid first. it sounds like one of the clutch plates is sticking.

If you shift into second after you've stopped, can you get the car moving?

Jun 25, 2008 | 1998 Mercury Sable

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