So i calibrated my tps in neptune as it was only reading to 66%. Now when i go above 96% the check engine light comes on. Any ideas? Thanks.

 

Double check that your tps's mechanical calibration is at .45 volts at 0% throttle and 4.5 volts at 100% throttle with the key on & engine off. (Probe the middle red wire with a multi-meter).

 

Gotcha. I take it its adjustable where it mounts? Will do that tomorrow. Thanks.

 

Not from the factory. The factory uses rivets to keep it in place.
I am assuming you are using an aftermarket throttle body.

 

Already responded on my forum, but this will be good for others who see this. When using NepTune if the engine is off and you push the throttle down all the way you can check your codes as if you jumped the service connector.

 

Didn't realize that was what that was for. Cool feature.

 

Thanks. Makes it easy to check codes.