I have an Autometer electric fuel pressure gauge. Recently it has started acting up. Randomly it will read about 20 psi low. Sometimes it does this, sometimes it's fine. There are times it will read fine, I will shut the truck off and restart, and the pressure reads low again. Sometimes it will read low on startup, and after driving for awhile I'll look up and it's fine. It's not an actual pressure problem cause the tune is fine and my wideband never shows lean. Anyone had issues with this before?

 

Any chance there is an air bubble in the line to the sending unit? Poor ground?

 

welcome to the club, mine does the same thing, just contact autometer and send it in for repair.

 

My buddy had a autometer Electronic boost guage and his always read 5lbs too high.... Go figure, he got pissed and smashed it with a hammer............

 

Well that sucks. I guess I'll send it back. Do you know if it was the sender or the gauge?

 

I think his was in the guage, if I remember correctly he ended up swapping guages and used the same sending unit... Not positive though.