Got GoWesty's mailer the other day; they have a complete rebuilt throttle body including switch for $299.  Also, for around $80, Van Cafe sells a new switch of their own manufacture (Shoebox Electronics). 

Karl Wolz
Sent from my electronic umbilicus

On Aug 7, 2013, at 7:15 AM, David Beierl <dbeierl@ATTGLOBAL.NET> wrote:

> At 09:31 AM 8/7/2013, Bryan Feddish wrote:
>> My TBS seems to be stuck in closed circuit and I can’t seem to fix it.   It also appears that this is an NLA (and quite pricey) part.  Does anyone have a good used one they can part with?
>> 
>> I have an 83.5 and this looks like the switch I have though I’m not 100% sure.  It’s listed for use with an ‘84.  This is what it looks like.
>> 
>> Thanks,
>> Bryan
> 
> Hi Bryan,
> 
> The list doesn't take attachments...you'll have to put the image up somewhere you can link to (I can put it up if you need).  Or if it was a link you forgot to put it in.
> 
> I'm not sure what your acronym TBS is supposed to mean...in WWII it was the Talk Between Ships short-range voice radio system the US Navy used.
> 
> TPS is a standard acronym for Throttle Position Sensor, and some people on the list have recently started using it inaccurately for our closed-throttle/Wide-Open-Throttle switches.  I suspect that's what you were aiming for, but it's not really correct.
> 
> There are only two setups, the original one you have and the replacement which came in I think some time in '85 and is totally different.  The new one hangs off the bottom of the throttle body, uses a single much smaller microswitch, and is operated by a cam off the bottom of the throttle plate shaft.  Cheaper to make but not as good as what you have, and needs a different throttle body.
> 
> There's a guy on theSamba who calls himself TenCentLife or similar -- does throttle body rebuilds and also has developed a vacuum-based replacement for that switch.  Scott Daniel has experience with it and likes it.  Might be worth checking out.
> 
> Yrs,
> d