Gunmetalgrayram

Ya mine looks a little different but I do know it's the return line that u need to remove. There should be a little "R" stamped on the body of the FASS unit next to the hose. Also, when I did mine, the guy from FASS told me to remove both the filter and water separator but keep them filled with fluid. Then take the hose off, stretch the spring, put the ball and spring back, reinstall the water separator then the fuel filter, prime the system and check your pressure!

Thanks a lot guys! It's been exciting but busy for sure! MoparMan - so any stock standard output alternator for a truck with my vin should work as long as the ac output is below .1V? What would you recommend to fix my issue with rough starts other than wiring it into the power window fuse? GreenRiver- ya man I called fass and they send out the parts ASAP. I changed it out but now I'm up around 21 psi so I need to do a little tweeting on the spring. Maybe try stretching yours 1/8 - 1/4"... That's that fass recommended me to do if this new spring was too much

Well guys sorry for taking so long to reply. My wife and I just had our first baby last Friday so I've been pretty busy lately! Anyway, I changed out the spring and that worked great! Next I disconnected the alternator and my issue of shifting and bogging down went away! You guys are amazing with this knowledge, thanks again! Now I'm looking to change that alternator out, any suggestions? Or will one from auto zone do just fine? My last issue was rough starts. I notice now if I bump the started b4 firing it up there is no issue so from what I've read it seems like I just need to wire my FASS into the power window fuse. Thanks again to all and any help would be appreciated!

Very interesting mopar1973man, I am going to be in contact with fass for a different spring this week. How would you recommend testing my alternator without a setup like in that video? Maybe start the truck, unplug the alternator, then shift into gear to see if the problem still exists?

Ok well I'm not sure if anyone is looking at this thread any more but here goes. I replaced the apps sensor and that fixed my code issue! Been running great ever since! Also, I installed a mechanical gauge and realized I was getting only 12psi... Just under 10 wot so I called fass and they shipped me a new spring and ball. Installed that this morning and now I'm at 24 psi and 21 wot... Should I be worried?

Excellent information. Thank you very much. I am in the process of installing the new apps right now and just noticed that the blue wire with the black tracer has been tapped into at some point and it runs toward the firewall but then I can't tell where it goes... Any idea what this might be for? Also, what is the easiest way to set up a regular guage to check if my cs fuel pressure is correct?

I had a feeling about the short draw straw... Just wanted to get another opinion. I will make sure to keep it fueled up for sure! I will also look into that fass write up. Thanks for the quick feedback fellas. Keep it coming!

Hi all, I'm new here, just bought an apps sensor and saw this forum that looks very informative so I figured I would join! Anyways here are my issues: 1- P0122 code which I figure is the apps because I did the reset found on the cummins forum and it went away for a few days but now is back... Going to install new apps tonight. 2- Rough starts first thing in the morning. Seems like it cranks over for about 2-3 seconds before firing up, no issues starting any other time of day. 3- if I don't allow the truck to warm up and shift directly into drive it bogs down quite a bit, then RPMs bounce back up and I'm good. It has died a couple times. No issues at lights or stop signs at all tho. 4 - my last issue is one I noticed last weekend, I was driving along and noticed my attitude cs was beeping at me for low fuel pressure, it would go down to about 7 psi then jump back up to 15. This problem went away as soon as I filled it up with fuel, I was at about a quarter tank. Truck is an 02 cummins with rebuilt tranny, attitude cs tuner, fass fuel system, etc.