i know this has been discussed before but i cant find it. what should rail pressure be idling at 750 rpm? and what should it be at highway speeds no load 100 km/hour? i see 6-7000 psi when idling. i dont know what it is on highway because im scared to use my quad rail gauge for any length of time because it fries sensors.

i fried 3 rail sensors in 3 weeks last summer using it. so instead i unhooked it and just use my quad gauge for lift pump psi only.

 

Can't answer your question but you should be calling Quad on that. It's probably one of the defective units that isn't sealed properly.

 

I see around 7500 psi at idle and between 14000 and 22000 psi on the highway @ 110 km/hr depending upon hills and headwinds. Thats with my Smarty on SW1.

I agree with xtoyz, you have something wrong with your Quad, it shouldn't be frying your RP sensor.

 

thats kinda what i see to. maybe we both have defective unsealed units?

 

Look at the Quad connection to the RP sensor from the top. If the middle wire is unsealed that is your problem. Either have Quad replace the harness or use RTV to seal the opening.

MikeyB

 

i didnt wash under hood all summer and i had 3 rail sensors go?