tps drop out?

[ulose2av6]

ok i hammer it my tps goes to 4.60-4.68. then all of a sudden it drops to 3.98 volts. what i am trying to say is that it doesnt stay solid 4.60 volts is it supposed to and whats the reson for the drop?

 

[trbo668bird]

Are you scared and starting to let out? Check your reference voltage and see what it is doing should stay very steady at around 5 volts. Could just be a bad TPS. HTH