Ive been at this darn ram trying to get it to run right almost a year now.
I have a great idle and great acceleration. I however have a miss from 1300-1800 rpm.
Short history, father in law said it was running bad, did tune up (cap rotor plugs coil wires) and did not help. We tossed some new injectors on it and that didnt help either. By this point he was fed up and it started gushing oil. Ended up getting a new truck.
So far it has sat here for over a year and rotted fuel and brake lines. I replaced all the brake lines and fuel lines, replaced gaskets, and did other needed maintenance.
Recently I replaced the crank sensor under suspicion it was causing an erratic misfire. Turns out it was worn down to the metal pickup, but did not cure the miss.
I routed all spark plug cables in a manner they werent touching, have not dished out for taylor cables yet, but that is still an option if these wires dont ohm out right.
IAC is new. As well as the PCV.
Tested the throttle position sensor, I have 0.9v thru 3.6 with no spikes or drops (even when tapping)
Fuel pressure is a solid 39-50 at idle and rev (havent tested under load, hose isnt long enough to see with hood closed)
I have good compression on all cylinders (140ish)
What am I missing? Ive read many articles mentioning the oxygen sensor- could it really cause this missing even at a cold start?
The truck accelerates great and shifts properly, but at a 40-50mph cruise its almost bogging down and has no power.
We stuck an inspection camera down the intake and didnt see any oil. Some carbon deposits but nothing that would shout busted intake.
Could the cat be getting clogged? Or is the o2 causing this?
What about the MAP sensor?
I have a great idle and great acceleration. I however have a miss from 1300-1800 rpm.
Short history, father in law said it was running bad, did tune up (cap rotor plugs coil wires) and did not help. We tossed some new injectors on it and that didnt help either. By this point he was fed up and it started gushing oil. Ended up getting a new truck.
So far it has sat here for over a year and rotted fuel and brake lines. I replaced all the brake lines and fuel lines, replaced gaskets, and did other needed maintenance.
Recently I replaced the crank sensor under suspicion it was causing an erratic misfire. Turns out it was worn down to the metal pickup, but did not cure the miss.
I routed all spark plug cables in a manner they werent touching, have not dished out for taylor cables yet, but that is still an option if these wires dont ohm out right.
IAC is new. As well as the PCV.
Tested the throttle position sensor, I have 0.9v thru 3.6 with no spikes or drops (even when tapping)
Fuel pressure is a solid 39-50 at idle and rev (havent tested under load, hose isnt long enough to see with hood closed)
I have good compression on all cylinders (140ish)
What am I missing? Ive read many articles mentioning the oxygen sensor- could it really cause this missing even at a cold start?
The truck accelerates great and shifts properly, but at a 40-50mph cruise its almost bogging down and has no power.
We stuck an inspection camera down the intake and didnt see any oil. Some carbon deposits but nothing that would shout busted intake.
Could the cat be getting clogged? Or is the o2 causing this?
What about the MAP sensor?