vivenvex

Well not totally dead, when you first turn it on the speedo goes to 0 and will ride for a few yards then just goes limp. My previous "stock" alternator was making my voltage needle jump everywhere light dim, stall at hard stops sometimes etc etc... So I just installed a 145amp unit, runs amazing... Steady voltage, smooth driving

But now I have the speedo thing, I have yet to do the big 3 which I plan on doing in the next couple weeks, as my current suspicion is a ground issue. My edge cts insight can still read mph so it not like I'll be screwed driving ATM.

What do y'all think, ground issue also?

vivenvex

Update...

So I just did the big 3 with some nice 0 gauge. And the speedo is still on the fritz.

To be more specific, when reversing it seems to read speed, also I saw it work from a stoplight up to about 10ish mph then die out again.

All grounds were cleaned during the big 3 process.

Any ideas?

vivenvex

With concerns to the vss, wouldn't the vss still be working if my edge cts is still able to display mph, but the analog gauge is still acting up?

vivenvex

Bump, nothing?

14k

Same here I swapped my alternator and now my speedo is pegged past 150 and doesn't move. I need help asap

CATDIESEL

unplug alt and drive and see if speedo works. if so get a new alt again!!. if not then i would say the low voltage from the previous alt may have damaged your instrument cluster.

14k

The other wasn't bad just the bearings sucked. Stayed at 13 all day. I was driving it and it shot up while I was going 30 and it worked