Hi, Paul,
I have a lead on a 1991 RX-7 (non turbo) that the owner says
needs a throttle positioning sensor.  It idles at about 3000
rpm.  I have called my local parts dealers and it appears that
a replacement part is from $400 to $600.  List is about $900.
How can I prove to myself it is in fact a TPS problem, and if
it really is, do you or anyone else reading this, have a source
that can save me any $$?  Do the race cars even use TPS's, and
if not, can I get one they might otherwise throw away?
Thanks for any help you can provide.
Gerry Hanscom
P.S.  I'm going to be at Sun 'n Fun.  Hope to see you there,
but I would like to react on this RX-7 before then.  Thanks again.


I might be at Sun N Fun. If so I plan to spend a lot of time in
the Lincoln welding tent learning how to tig weld aluminum.

TPS are simple devices. Basically just a potentiometer
connected to the throttle shaft . I suggest looking on Ebay. A
unit for a different kind of car with about the same power
would work.

Paul Lamar

Gerry...
If you want a new one, Rock Auto has one that's brand new for
$193...I've bought several parts from them in the past...
http://tinyurl.com/ae45qhr

Harley