Guages

2002 ls v8.

Why do the TAC and speedometer guages jump all the way up when i start the car as if there is/was a loss of power or something? The battery and altenator have been replaced within the last couple of years. i.e the [corrected] speedometer needle travels all the way to 160 then back down to normal. Hope I explained that well.

You mean the speedometer needle travels all the way to 160, correct? The tachometer doesn't go that high. ;)

Do the gauges function normally otherwise? I don't think my wife's 2002 LS6 does this, but I know it is common for some cars to cycle the guages at startup, probably for self test or self calibration. I don't remember my 2004 doing that either though. Do you know that this didn't occur in the past on your car?

-Rod

oops, yes i mean the speedometer. i notice this happening suddenly and it doesnt happen all the time. otherwise, they functon normally. Im just concerned that this is some kind of warning.

I'm certainly not the authority on this, but I don't recall reading of anyone else commenting that their gauges do this. I checked my wife's 2002 LS6 when I moved it tonight and her gauges didn't move.

-Rod

It is an indication of a weak battery, try putting a charge on it.

The LS electronics will behave badly in this condition.

hmmm. that battery, and altenator is fairly new. i hope i dont have to do an alternator. thats a pain to change. but i'll check the battery. thanks