Post by
GmFwd »
https://forums.nicoclub.com/gmfwd-u158649.html
Wed Apr 21, 2010 3:46 pm
A tiny variation like chaosli has is normal, nothing is perfect.
However, yours is a little excessive. I would start by checking the ecu ground and the TPS ground. Then make sure your reference signal is steady(should be 5 volts). If thats all good, then its either a bad sensor, or theres a problem with the TPS output(where the ecu gets the signal from) wire.
Good luck.