Doc is correct again......1693 is a companion code meaning there is another code there...............yer local aut parts place can scan for you

here is a good thread on the intank pump

https://www.dieselbombers.com/5-9l-2...dont-walk.html

 

It was 10 PSI before the filter and 8 PSI after the filter, and it stayed at 10 from Idle on upward. I think I'm going to replace it. Any suggestions for the best way to convert to either a FASS or Airdog from the in-tank pump I have? Will I need a straw of some sort? Do I have to take the old pump out of the tank or can I just leave it in there disconnected?

 

I would scan the truck and install an incab fuel pressure guage before doing anything else.

You can install a draw Straw in the tank which bypasses your intank pump OR I believe Airdog has a new intank module assembly.

http://www.dieselbookmarks.com/bombers/AirDog8.pdf


Vulcan compound turbo components, FireBall injectors, DrawStraw? Big Line Kits, VP silicone boot kits, gauge installation components, metric adapters & fittings, FASS, Quadzilla, Edge,AirDog, DTT Trans, ISSPRO, HTT Turbo, AFE, Veg pumps,? brackets, has the drawstraws

 

updates??