Question about 1993 Oldsmobile Cutlass Ciera
There a couple of possibilities here.
The sensors on these cars were usually reliable, never had to replace too many.
I suspect a possible worn/broken gear in the transmission where it meshes with the sensor, a broken wire/poor connection or an instrument panel problem.
Here is a test procedure from the manual.
Connect a Scan Tool to the ALDL Connector. Disconnect the Vehicle Speed Sensor connector. Connect a lead between the J38522 Vehicle Signal Generator's red output terminal and the Vehicle Speed Sensor connector terminal A (YEL). Connect a lead between the Generator's black output terminal and the Vehicle Speed Sensor connector terminal B (PPL). Plug the Generator into the Cigar Lighter. Select 30 V P-P sine wave and set the frequency at 600 Hz. Observe the Speedometer and compare it to the vehicle speed shown on the Scan Tool.
I hope this helps you towards a repair, thank you for using FixYa.
Posted on Nov 13, 2010
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Posted on Jan 02, 2017
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