Engine/Transmission (1998.5 - 2002) Caution with FASS or other installs that dont use the stock fuel filter housing!

[DCreed]

I've been searching for a while now as to the cause of a bucking/miss I've had w/my TST comp fueling box. I checked everything I could think of and others have offered advice still to no avail. :{ the scenario is that when the moisture in the air is over 70% the truck bucks, but only when the box is on. To make a potentially long story short, when I hooked up my FASS ,I took out the PRIMELOC set up that was in there. In doing so my "water in fuel" sensor was unplugged and left dangling( I didn't need it). I recently washed the undercarriage and the check light came on ,"water in fuel" hmmm... so I cleaned,greased(elec type),and wrapped the plug in electric tape. Reset codes w/SMARTY and... BUCKING GONE!!! I drove it in the rain yesterday(sideways!) Wheee! hope this helps other poor schleps like me out there!

 

[GOTSOOT]

so what does the filter houisng have to do with it? just not getting your jest of this!

 

[wcjp]

Don't depend on the electrical tape (vinyl tape) to keep water out. If it's inside the connector could try dielectric grease.

 

[DCreed]

the sensor plugs into the filter housing without the housing ,no plug! ... yep its full of di-grease wrapped in tape!

 

[rkressg]

If I remember correctly, the fitting/sensor is threaded. I installed my FASS about 4 (maybe 5) years ago, and I had a similar problem (the WIF light would come on in the rain).

I took the sensor, and a 1/4" NTP coupler, and 1/4" NTP plug. I threaded all this together using pipe sealant (I also packed the sensor in Di-electric grease), then cable-tied it to something in the Engine compartment (most likely the 1/2" fuel line, but again I can not remember). I have never had the WIF light come on since then.
-Rich