Autosport Labs

Thanks, I think I have some kind of earth problem. I'm going to rewire, as it's just too much sticking plaster over what isn't a terribly good loom (my first effort).

I've set up the TPS, reads 0 to 100 OK, saved calibration to the unit. But when I fire up the engine, it sticks at below 8 or 9 and won't go any higher; sticks on the way down at 6 or so, randomly drops to 0. Coils are about 12 inches away in testing mode. TPS circuit is unshielded 3 wire. I've eart...