|
"As he says the TPS has to be set on the hairs edge of the throttle plate wiggling open from being absolutely shut down. "
This advice, Phil, is what I believe contributes to the flaky operation of the TPS, when it is taken literally. If you examine the operation of a snap action switch in close detail, you'll find that the snap, or click, is not the entirety of its conversion of motion to electrical function. You'll find the switch is even sloppier in this as it ages.
This is noted by Peter when he bench tests the switches and find he has to add just a little extra pressure to get the switch to close after the snap. You can test this too, with a spare switch on the bench. If you operate the switch in very slow motion, thou by thou, so to speak, you will see that setting the switch on the "hairs edge" will just get you in trouble. Add temperature variations to this and the trouble will be worse.
The idea of getting the switch to open at the slightest press of the go pedal sounds good to us as boy racer off the line performance. I'd be more concerned that the idle control is brought into play in every case when the pedal is released than taken out of play at the slightest touch.
So, yes, adjust it so it clicks when the throttle is closed, but set it so it clicks even just a tiny bit before the throttle is tightly closed. If this is confusing, use an LED test light on the circuit to prove that it indeed goes out (switch closes) every time the throttle is released.
--
Art Benstein near Baltimore
Always remember that you're unique. Just like everyone else.
|
