Ok, came up with another problem, my TPS settings keep changing. Had the car tuned a couple weeks ago, anf it was set about 32%, and I wasnt getting the * confirming a correct setting. Looked at it today before I went to check my emissions, and no * again. Adjusted it down, and now its showing a * on 27, 28, and 29.

Any ideas to why its moving around, and also which setting should I use when showing the *, the high, low, or middle number?

 

You need to set the tps with the car warmed up. After driving around, set the tps and it should never move from there

 

Ive removed all of the cold start **** from the car, but ill give this a try.

 

I had the same problem and what I found that worked the best was putting a nut on the other side of the TPS adjusting screw. Once I did that the TPS always stayed where I put it.

 

Hm, its not a series 4/5 style tps though, its a 20b style tps, like a gm tps.

 

i have the lt8 with a s4 tps ...any tips for the set up ,and rule of thumbs, before tackling the tps ....i read its used as switch ,,,how do you get a smooth throttle curve

 

make sure your not adusting off the cable instead use set screw on tb its much more accurete