So I finally get the engine back in, fuel sync done, run two cans of B&G fuel system cleaner through the fuel rails with the fuel sender disconnected, and I am still getting a lean on bank one. I installed the Hughes engine plenum repair on the bottom of the manifold so I feel pretty good there is not a vacuum leak there. Airtex fuel sender in the tank which is not that old, but I do know that Airtex fuel senders can be junk. Wondering what other brand of fuel sender to use. I suspect it is an issue of not enough volume, although i have pressure. Front O2 sensor going bad? It really sucks that there is no other codes. And has anyone heard of the coils on these trucks going bad and causing rough idle problems? Thanks ,Mike

 

Are you checking fuel pressure with a gauge?

 

Yes, 40 psi. Which if I remember right, is right in the middle of spec.

 

What exactly is the code(s) you are getting? And please add ALL the info about your truck to sig and profile if you use a cell. Is it a California Emissions vehicle?

 

You are low on fuel psi.

From the 96 fsm:

should be 339 kPa ・} 34 kPa (49.2 psi ・} 5 psi).

 

I am sorry, I am not getting any codes from the pcm, I wish I was so I might be able to go in that direction. The scanner just shows the truck is running lean. 96 FSM? Field Sevice Manual? And the truck is not California emission. And sorry for my ignorance but what do you mean by sig and profile? And do I use a cell? Sorry. The engine is a 5.9 if that is what you meant. As far a fuel sender any suggestions as far a brand other than Airtex? Other than dealer? Thanks again guys.

 

Denso as far as fuel "pump" goes. But what scanner are you using that says bank 1 is lean?

 

In the upper left black bar you will see "user cp" go there and you can then fill out your info.

You can get the Service manual @ the link below. The Diy area has lots of good info.

https://dodgeforum.com/forum/2nd-gen...e-manuals.html

 

Snap on scanner. I do not know the model number. Same one used to set the fuel sync.

 

Replace the precat o2 (should have done that anyway) and replace the post also for that matter, check the cat (pressure test)and go from there. Get the o2 sensors from Rock Auto (NTK or Denso)and use the 5% code. https://dodgeforum.com/forum/2nd-gen...disc-code.html