Speedo Q?

[4x47.302]

i just noticed today that the speedo on my truck started to jump about 5 mph when going down the road. i took both batterys out last night when i installed some hid lights to mount the boxes on the side. is there any wires up around the batterys that i might have bumped. i did take a ground wire loose on the front driverside and put back on to intall one of the boxes. would this wire have anything to do with that. thanks for the help.

[mick883]

Was it on a smooth road or were you on a back road when it happened?
Would guess that it is a contact issue. Double check your battery terminals to make sure for good contact.

[4x47.302]

i would say it was pretty smooth, i was on the highway for about 60 miles. if something was loose why would it just affect the speedo. is there is a wire up front that has to do with that.

[mick883]

I am suggesting the batteries since you removed them. Wierd things can happen when there is a bad/ not tight connection. It can make your truck shift funny, turn on/off turn signals, and surely effect your dash instruments.
Others will chime in on the issue for sure, but it is also the cheapest thing to check/fix if you have a connection issue with your battery.

[4x47.302]

yea you are right i will check the connections. thanks

[NCHornet]

could be just bad timing and the VSS could be going south.

[4x47.302]

when you said something about the vss are you talking about the part in the rear axle.