Question about 1996 Buick Regal Olympic Gold

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Speed sensor for a 1996 Century

Good day!

My problem that I am having is with the speed sensor on a 1996 Century.

I have replaced an old speed sensor w/ a new one due to the vehicles odometer and transmission acting up. The odometer is not reading and the transmission shifting hard.

So I replaced the speed senor w/ a new sensor and the problem was not fixed.

What do you think is happening?

Thanks
Dave

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  • yadayada
    yadayada May 11, 2010

    I assume u got a code for the speed sensor circuit, this code means there is a problem in the speed sensor circuit, it can be the sensor, the wiring, the connector pins or the PCM, but as u found out in your case it is not the sensor but some other issue in the VSS circuit, u will need to check the wiring from the sensor to the PCM (powertrain control module) and see if u have continuity. The dealer has special electronic test equip to run these tests, I suggest u refer this repair to the dealer.

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Dave,

May want to see if the parts store gave you a good sensor or not. Also May want to check and see if you have a transmission input and output sensor as well. these will also give you the same symptoms. Whatever it is, the transmission is not sending the speed signal to your ECU which is in turn not sending the right shift points until its too late causing the hard shifting and also since the ECU doesnt have a speed signal you may not get an odometer/speedometer reading (one or both may go out). Hope this gives you some direction. Good luck. Thanks for using fixya.

JC

Posted on Dec 29, 2008

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Posted on Jan 02, 2017

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