2nd Gen Non-Engine/Transmission Problems w/ Westech fuel pressure gauge.

I installed a Westech fuel pressure gauge on my 01 about 9 mos. ago. Everything went fine and it was working well. 14-15 psi at idle 12-13psi at cruise and 10 psi at wot.

Recently I noticed that it has been pegged at 16 psi. Sometimes it sticks as well. I also noticed that it doesn't come down much from 16psi even under full throttle.

Not sure if there is a problem w/ the sender or the guage. I'm pretty sure that the pump isn't pushing those kind of pressures.

TIA.

 

Check and clean your ground(s)

 

Turns out that it has something to do w/ the lights being on. When the the lights are on it sends some power to the gauge, to engage the light, but it also makes the gauge read about 3 psi higher. So it works normal w/o the lights on.