Editing Throttle Position Sensor (section)

==Inside the TPS==

On the left, an automatic TPS with the cover removed.  It has an extra connector for the pot output.  On the right, a manual TPS.  Removing the cover is a destructive activity, requiring two rivets to be drilled out.  You can spray contact cleaner inside the housing through slots in the bottom of the hole where the throttle shaft pokes in, and some will get on the switches, while a lot goes everywhere else.  I was also considering cutting the cover just above the idle switch, scraping the switch contacts clean through the hole, then sealing the hole up again.

[[Image:TPS_1.jpg]]

At idle (left) the top switch (idle) is closed, the bottom switch open.  As the throttle is opened (middle), the top switch opens, the bottom switch stays open.  As the throttle opens further (right), the bottom switch closes.

[[Image:TPS_2.jpg]]

The TPS lives here, held on by two 7mm head bolts.  The vacuum hose in the foreground is disconnected to access the lower bolt.

[[Image:TPS_3.jpg]]

The TPS is adjusted by rocking it back and forth like so.

[[Image:TPS_4.jpg]]