scsuperstang

I'm having a problem with the speedo jumping around mostly in gear while idleing. Ive replaced the transmission speed sensor, checked positive and ground terminals on battery, engine and chassie ground. Still haveing the problem. sometimes will do it just after putting car in gear or even just as you put it in park. Mostly while in gear idleing though. Anyone have any idea's???

gagliano7

Go over to ls1gto.com and should get a response over there.

sicksspeed

iTrader: (2)

Using a scanner read what the pcm is seeing. If it is steady the data is good. If good scanner might look at ipc data also to look for same. Strong possibility of bad/ sticking speedo motor.