After an OBD II
scan you learn that your input or output vehicle speed sensor (VSS) has
malfunctioned and needs to be replaced. You can take your car
to the repair shop or dealership and spend between $100 and $250 or
more to have one speed sensor replaced or you can replace the sensor
yourself for a fraction of the cost.
The DIY cost for replacing a speed
sensor is the cost of the sensor. Depending on the vehicle
year, make and model, a speed sensor can cost as little as $7.92 or as
much as $100. For most vehicles, the cost for a speed sensor
is between $25 and $45.
these procedures for replacing a faulty vehicle speed sensor
(VSS). The same removal and installation instructions apply
both the input and output speed sensor.
CAUTION: When replacing the new speed sensor be
sure the O-ring on the new sensor is correctly fitted on the sensor
and output speed sensors are not
Sensor Replacement Procedures Begin Here
of faulty sensor
Loosen and remove negative battery
Locate the faulty speed sensor and
disconnect the speed sensor connector.
Note: On older vehicles and vehicles driven
in harsh weather, be especially careful when disconnecting the plastic
electrical connector from the sensor as they break/crack quite easily.
Unscrew and remove the sensor.
Check the connector wiring to insure
there are no breaks or exposed
wire. It is best to replace a broken connector but not
absolutely necessary as long as the connector fits tightly onto the
sensor. Use electrical tape to repair any
of new sensor
O-ring is installed on new sensor.
tighten new sensor. CAUTION: These sensors can break easily -
do not over-tighten.
speed sensor electrical connector.
tighten negative battery cable.