Has any one ran into a problem where their fuel pressure saftey switch shorted out through the housing?

When I hook my multimeter to the two leads to check continuity, it seems to work as should. Grounding out above 40psi. Now if I hook the Negative wire from my nitrous relay to the fpss and the other lead from the fpss to a ground it id grounded all the time?

I tested every lead of the relay and nitrous wireing for shorts and found that nothing. But if I probe one lead on the fpss and probe the 1/8" pipe thread fitting off the switch or where it is is mounted off of my adjustable fuel pressure regulator and gage it is grounded? I think that I have a bad fpss.

I set my switch up by putting a fitting on it and conecting it to my compressor and slowley decreasing the air pressure to set the cut off point (40psi) so I no it is set right.

Any body run into a bad switch?

 

I would greatly apprichiate it if someone could complete a quick check for me.

Check to see if there is any continuity between the inlet lead of your fpss and the 1/8" pipe thread it mounts with (with the car shut off or no fuel pressure).

I believe mine is grounded out internally to the mounting source, telling the switch or nitrous relay I have it hooked to, that it is always grounded or working even if I have no pressure. But from lead to lead on the fpss it works as it should and opens the loop when the fuel drops below 40psi.

Thanks

 

What switch part # do you have?...Some do ground internally, but most of those will only have 1 terminal on the outside.

 

I am not sure of the part# but it is the NX one that is adjustable from 30-70 psi and it has two terminals. I called NX and had one of the tech guys test a couple and none of them were grounded out through the case. So I guess I am going to buy a new one.