So i dont get the lurching and bucking when in gear under 2000 rpms



IS there a way to properly set the tps without taking it to my mechanic?

on the throttle thingy (the one you rev the engine under the hood with)

it has a screw with a spring over it on it, turn the screw either way until you get it pperfect , thats the best advice i can give lol

You need to build a small checker light to set the Tps. Its super easy and cheap, less than 5 bucks at Radioshack. You need two red LED checker lights and three spaid connectors. Take the two lights and hook the red wires together onto one spaid. Than take the two black wires and put a spaid on each one, now you should have a three prong connector with the red wires on one spaid and the negatives each having their own. Warm the car up to its normal driving temp and then shut it off. Pop the hood and find the green 3 prong connector over by the air filter near the strut tower. On the connector one slot is horizontal and two slots are vertical. Plug the red wire spaid into the horizontal slot and the negatives into the vertical ones. Than find the green two prong connector over by the leading coils near the battery. This is the intial set coupler, you will need to jump it with a wire or paper clip. Now go back and turn the key to the on position but don't start the car. Go out and look at your checker lights. If both lights are on you should loosen the afformentioned screw on the throttle body until only one light is on. If no lights are on you should tighten the screw until one light is on. Hopefully I didn't get that backwards, its been a while since I have done it. It says in the manual anyways. Then once you have it adjusted turn the key off and remove the lights and jumper in the coupler. Then you can start it up and see what happens.

If one light comes on initialy, you might want to try tightening the screw unitl both are on and then very carefully loosening it until one comes on again. This has seemed to work for me.

pictures? I'm confused... about making the LED checker thing. I dont understand your explination of how-to make it. THanks



Markus

I think there is a write up on fc3s-pro.com, but the site seems to not be available. If you click on this, look down the page a bit and it will show you what the checker light looks light. This is a write up for checking the engine codes, but the tester lights are the same. http://www.teamfc3s.org/info/articles/erro...codes/main.html

http://www.teamfc3s.org/info/article...odes/parts.jpg



http://www.teamfc3s.org/info/article...es/tester1.jpg



https://www.nopistons.com/forums/pub...#>/biggrin.png



I guess I was doing it wrong when I set it on my car. I was going all the way in untill both lights were on, kept going untill one shut off, then backed it off untill both lights came back on. I guess thats why I have had kind of a shitty idle. I'll go reset it in the morning. I need to make my own light so I can give you yours back. https://www.nopistons.com/forums/pub...R#>/tongue.png

awesome. now i know what the hell you guys were talking about. I'll buy the lights tomorrow and get my TPS set! Hoooooraaayy! https://www.nopistons.com/forums/pub...IR#>/bigok.gif

Thanks isamu, i really needed that post.

Hey is there a way that this same technique can be done if you have a Haltech computer but are using the stock s5 tps.

are there differences between an s4 and s5 tps. i have an 1990 fc and my tps is bad. can i replace it with a tps from an 86?