randyoo@gmail.com wrote:
> The other day I was driving home, cruising at a constant speed when
> suddenly my speedo dropped down to zero and the check engine light came
> on. After that, the speedo jumped all over the place, past 100 mph,
> back to zero, totally random, and the transmission started shifting
> weird, so I figured it wasn't just my speedometer... I unplugged the
> connector for the Vehicle Speed Sensor, and now the transmission is
> pretty much back to normal, but of course, I still have my check engine
> light, and the speedo stays at zero.
> Today, I installed a new speed sensor, and I get the exact same problem
> - clunky transmission, crazy speedo... So now I think it must be
> something else, like wiring or grounds. I've also noticed that
> occasionally I my dash lights and dome light seem to "throb", but
> that's been happening since before the speedo problem. I've seem other
> posts online where others had the same problem, but noone ever said
> what it was. Should I be looking at my alternator, wires, grounds, or
> is it possible I got a brand new broken speed sensor?
> I have no problem checking all that stuff, but hoped somebody would
> read this that had the same issue and could save me some
> troubleshooting time.
>
> Thanks,
> Randy
>
for ~$60, you can go to sears and get a code reader. your car is obdcII
compliant. or you can have the codes read for free by some auto parts
stores. once you have the code, you can fix the problem.