Well like the title says, my fass just up and died without warning. One second it was working great19-17psi and then it just stopped working...my pressure gauge went to zero. I am just wondering if this is a common problem with the Fass 150's or if I am in the minority.

I am going to talk to fass on Wed, but the pump is 4 yrs old and out of warranty. It only has 20,000 miles on it . So i guess before I drop 600+ on another FASS would any of you go a different route and if so what.


The way that i checked to see if it was dead is...I started with the fuses and they were both fine. Then I checked to make sure the ecm was showing voltage when the key with turned, it was. Then I tried touching the red wire for the pump to the battery terminal to see if it would run...nothing not even a spark. Then I unplugged the fass back at the pump and ran two wires from the pump to the battery, and when i touched the wires to the battery i again got no responce from the pump...not even a spark at the battery.

Thanks,

Paul

Sorry about the long post...what a great way to start the new year

 

I am an idiot...the brushes are shot. I just tapped the motor twice and it turned over again and showed 18# on the gauge I will call fass on wed and get two sets

 

FASS dead…. Is that possible? J/K

Glad to see you got it fixed.

Chris

 

First, tighten the brush holder caps, see if that heals it - if not pull the caps, see if any corrosion\oxidation - clean that - if not, pull the brushes and note the overall condition of the brushes -

- if very short that's abnormal brush wear and you'll need to look at the commutator B4 installing the new set

- if the springs are discolored and soft\collapsed\split, that's excessive current due to constant overload -can be caused by -

- poor connection

- undersize conductors (wiring) - factory wiring and relay is good for ~5a avg, which is what the oem pump draws

- low voltage, caused by both ^

- simple overload due to some restriction in the system: dirty filters, failing bypass, restricted bypass, etc

If inlet is restricted, pump will be less loaded than with full inlet flow - won't draw as much current, you'll get lower pressure, less fuel.