Someone explain speed sensors to me please.

[Tim_K]

My 87 Daytona (built March 1987) has some kind of electronic thing in the transmission where a good, old fashioned, and RELIABLE speedometer cable used to go. My speedometer doesn't work very much. If I'm going 70, it MIGHT read 20-25, and it takes the odometer and 12 button dash trip computer along with it.

What drives the speedometer / odometer? A couple electric motors?

At any rate, it's reading way low, barely at all. Are the problems usually in the transmission mounted sensor part? If so a junkyard trip will fix it. Are all 87-up units identical? I know of a few 87-89 cars and minivans to pull one off of.

This Daytona came with cruise control, but I didn't put it back in. Just plugged the vaccum line and left the wires unhooked.

[glhsken]

They are all the same... No motors are involved... simple electronic guage for the speedo.

If you do get a JY part, you will need to be sure to cap off the speedo cable input area if it is not allready.

[gdonovan]

Quote:

Originally posted by Tim_K If so a junkyard trip will fix it. Are all 87-up units identical? I know of a few 87-89 cars and minivans to pull one off of.

Don't waste your time- They have such a high failure rate with age that your better off just going to the dealer and popping for anew one.