At 04:01 4/10/2000, James Shinosky wrote:
>the dashboard, I observed that the throttle position switch light went off
>when I step on the gas and mostly went back on when I take my foot off the
>gas... (several times I tapped lightly on the gas and the throttle light
>flicked back on) Do I suspect a sticky or worn throttle position switch???
>Does it mean it is corroded and need cleaning and lubricating? Or to be
>replaced?

Gotta go back and look.  May very well just be adjustment.  You want it to
close with a .002 feeler in the throttle stop, but not close with a .004
feeler.

>     On the freeway driving, I observed when I take the foot off the gas, the
>Fuel Injectors light went off (do all four FI's really shut the fuel flow
>off?) and the Throttle light came on (again most of time). Then the FI light
>went on and the T light went out when I step on the gas...  Is that normal in
>comparing to anyone with digitool?

Absolutely.  One of the primary purposes of the throttle switch is to tell
the ECU to shut off injection when coasting.

>     Will check on Oxygen sensor, Temp I and II and AFM tomorrow... Any
>suggestion, advice or cheering me on???

Do it... <g>  With engine dead cold, not running, T1 and T2 should be
similar.  As engine warms, T1 continues to reflect air temp, while T2 drops
drastically showing hot engine.  O2 bounces above and below 0.5v once the
sender warms up.  AFM increases smoothly with throttle and rpm.

david
ps -- that digitool is really just hype, you're better off removing it and
sending to me for proper disposal.  Since I feel like doing you a favor,
I'll even pay the postage. :->
David Beierl - Providence, RI
  http://pws.prserv.net/synergy/Vanagon/
'84 Westy "Dutiful Passage"
'85 GL "Poor Relation"