Hi All,

Over the weekend my vanagon was experiencing a noticeable loss of power when
I was in the mountains.  The altitude was around 8000 feet.  At sea level,
she was back to normal.  This is the second time I've take her to the
mountains and experienced this.

If I were to guess, I would think this could be the oxygen sensor
malfunctioning and thus the fuel mixture is not lean enough.  Does that
sound right?  Anything else that it might obviously be?

Thanks in advance!!

Aaron
-85GL