Speed not Steady

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Jan 27, 2008 | 07:52 PM

dakotajeep

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Laughing Gas

Joined: Aug 2007

Posts: 1,132

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From: Baldwin, ND

Speed not Steady

I noticed today that under certain situations and circumstances my speedomter did read accurately. Mostly going up hills in third. Well, it would fluctuate a few MPH on either side of the actual speed. (Actual speedo was found using a portable GPS)

What can be contributing to this? What should I replace to ensure this isnt causing other problems with the tranny?

Thanks
Thad

Jan 27, 2008 | 08:18 PM

Franklin2

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Joined: Jan 2001

Posts: 56,995

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From: Virginia

You might have the electronic speedo that uses the speed sensor in the rearend for it's signal. If you do, you can check the wiring and the sensor back at rearend.

Jan 27, 2008 | 09:24 PM

David85

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Joined: Nov 2003

Posts: 6,900

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From: Campbell River, B.C.

Small amounts of metalic debris in the differential can get caught on the magnetic pickup of the VSS, and will cause irratic readings eventually. You can pull the sensor easily and clean it to see if thats the problem.

Jan 27, 2008 | 09:31 PM