p0172 running rich, max fuel trim
By 98RAM59
98 RAM 5.9 I have been chasing a running rich condition for months now, I do not know what else to do at this point. P0172 code, no other codes currently. Occasionally it throws a transmission range code of some sort, but I doubt it has anything to do with the running rich. Fuel trim is a -33.6% which I believe is the max Rebuilt engine New Delphi fuel pump assembly (50-55 psi prime/running, drops to 30ish psi after sitting for 30 minutes) New plugs, cap, rotor, cam and crank sensors... Read more



