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73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: 454CDX on August 14, 2006, 10:27:00 pm

Title: need help with speed odometer
Post by: 454CDX on August 14, 2006, 10:27:00 pm

In my 84 c10 the speed odometer wont work it has a new cable. I had my transmission rebuilt could the problem be in the transmission?

Title: > need help with speed odometer
Post by: Lt.Del on August 15, 2006, 09:33:00 am

In a word, Yes.

Are you sure your guage in your cluster works first???

Of course, something in your transmission causes the little gear on the speedo cable to turn.  That something is a gear that is held by a clip on the tail shaft of the transmission. If that wasn't fastened correctly with the little clip, then, well, your speedo, odo, will not work.

The fix:  The tail end of the trans will have to be removed which means your driveshaft will have to be removed.  I have never done this with the trans in the vehicle, you may have to remove the crossmember, not sure. But, the shaft will have to be accessible, however you do it.  The gear is like a donut that slides over the shaft and is clipped in place.  I have pics of this at home on my computer (at work now) and will attach them when i get home.








Sgt. Del
www.delbridge.net

Edited by: SgtDel  at: 8/15/06 12:00 pm

Title: Re: > need help with speed odometer
Post by: 123 pugsy on August 15, 2006, 12:11:00 pm

You might want to verify if the drive gear has come loose before you start taking things apart.Remove the cable at the tranny,the single bolt holding the driven gear housing .Pull the housing with the driven gear out and check the drive gear to see if its secure or not.

It shouldn't leak too much fluid when you do this.

Title: re
Post by: 454CDX on August 15, 2006, 10:37:00 pm

Thanks this helps I am going to go and check see if I can figuere it out.

I did take out the driver gear to check it, it seems fine I turned it by hand and the speed odometer did start to turn.