Check the voltage of the battery.  Make sure it is at least 12.5v or higher
(depending on temperature, type of battery, and current state of charge.)
if below that check the voltage out on the terminal clamps as well as
directly on the terminals and make sure you have good clamp connection. (did
you reclamp tightly?)

With the engine running check the voltage at the battery.  Should read about
13.5v or higher if the alternator is working.  Check the battery terminal
connections and alternator connections  that meet at the starter terminal.
Check the battery ground.  Check the transmission engine ground.

jimt

On 11/25/04 4:27 PM, "Son Of A Vanagon" <sonofavanagon@YAHOO.COM> wrote:

> Hello all-
> On the day of thanks I am reminded of just how much I
> love my westy!
>
> I have an ill '84 westy.
> Anyone have any ideas regarding the Battery and Oxygen
> Sensor dash lights coming on at the same time??
> This morning I was 10 minutes into an hour long drive,
> on the freeway and doing about 65 mph when I noticed
> that both lights were on, pulled off at the next exit
> to check belts, fluids, fuses, and wires in the engine
> compartment.  After finding nothing extraordinary, I
> continued without incident the final 45 miles to my
> destination.
>
> The things I do know:
> This afternoon we changed the alternator.  The battery
> was dead (and dieing) Turns out the old alternator was
> shot. (switched the non-power-producing old one with a
> working alternator from a 2.1). Seems to work.
> The van runs well, sounds like there may be a little
> backfire action if you listen closely (OSX??).
> Even after replacing the alternator the lights are
> still on.
>
> I am wondering about possible relays or switches that
> could be acting up or just dead.
>
> Any ideas or experience would be totally appreciated-
> Thanks-
>
> Tyler Steele
> Columbus, OH
> 84 Westy (very thankful for all of the good times and
> smiles it has created, on me and others!)
>