I had noticed that long ago.  They are both throttle enrichment settings.
However, the two signals do have different effects, depending upon what
other info the ECU has floating around in its beady little brain.

At full throttle, the switch will set the O2 sensor reading to full lean,
causing the injectors to fully enrich the mixture, and if you take your foot
off the gas at over 2000 rpm or so, the fuel will be shut off to the
injectors.

Karl Wolz
----- Original Message -----
From: "Stuart MacMillan" <stuart@COBALTGROUP.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Friday, April 14, 2000 11:04 AM
Subject: Re: Throttle switches on 1.9 WBX

> Interestingly, the two switches connect to the same pair of wires that
> go back to the ECU.  So, this pair is "shorted" by the switches at both
> idle and full throttle, sending the same signal to the ECU for opposite
> conditions!
> --
> Stuart MacMillan
> Manager, Case Program
> 800-909-8244 ext. 8208
> Fax: 206-269-6360
>
> Getting your share of the Net yet?
> http://cobaltgroup.com
> http://UsedEquipNet.com