Redtruck-VA
Senior Member
- Joined
- Jun 29, 2010
- Posts
- 5,864
- Reaction score
- 985
- Location
- Virginia
- Ram Year
- 2003 & 1989 D250 RWD
- Engine
- Hemi-5.7, 5.9 12v & 24v diesel
Ok this is for those who have fuel pressure gages. We know the 03 is setup for 48psi and 04+ are 58psi. A little history, I run a 05 pump @ 58psi and had no problems with DTC "rich condition" using the OEM PCM, Then I installed the Megasquirt stand alone tuner and have now removed it going back to the stock OEM PCM. The problem is I am now getting a DTC for rich condition and my LT fuel trims are pulling fuel at -20 + with fuel pressure showing an erratic 55-66 psi. My question is have I simply trashed the fuel regulator or is there something else causing the problem? What pressure are you guys seeing on your gages? My AFR is showing richer then normal running in the 13.5-14.5 range at cruise. Here is one picture just for reference.
Thanks,
Thanks,
