Question about 1992 Buick Century
Sounds like your speedometer cable is binding inside its sleeve.If you can get it loose from the rear of the instrument cluster in the dash (typically just pull the entire instrument cluster assembly out the front after taking out a couple or three screws) just shoot some dry graphite powder into it (available at Ace or Home Depot). Don't use oil or WD-40, as that will probably make it worse. It's doubtful that it's the transmission itself, the speedo is a simple thing driven by a cable from the transmission to the dash.
Posted on Oct 07, 2008
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