JakDodge
Junior Member
Need help please. If there is a thread that addresses please point me in the right direction as I did not see one.
Experience: Just purchased a 94 Ram 1500 with 5.2L. Check engine light comes on and the truck will stutter and stumble with backfires on acceleration or under load - it does seem better if acceleration is very light but have to lift pedal and drop rps for it to shift. Black smoke out of pipe when this occurs. Have to shift to N and apply pedal to prevent shut off at lights etc...that is my experience...
Observation: Both ICTs and crank sensor look recently replaced. Valve cover gaskets and trans pan have recently been replaced - all fluids look recently changed. Vacuum line on pass side engine that splits to a T has two leaks. Oil filter housing or pass valve cover leaking (poss rear main) and trans pan leaking. Vehicle appears to have cat delete - o2 sensors and wiring??
Diag: Consistent codes in this order 12, 37, 21, 15, 55 (I understand 12/55 are start/stop). Temp repair on vacuum leak noted above - no significant change in drivability.
Plans: check cap/rotor/wires and plugs but looks like a recent tune up done. Seems like fuel to lean but with cat/o2 non existent not sure what to do about that.
Should I check fuel pressure? Is there an external fuel pressure regulator/filter? Will induction service help? Thoughts on codes 37 and 15? and any other tips or advice. I am ok with this being a around town truck for light hauling but I want to know it won't shut off in front of oncoming traffic...etc.
Thank you!
Experience: Just purchased a 94 Ram 1500 with 5.2L. Check engine light comes on and the truck will stutter and stumble with backfires on acceleration or under load - it does seem better if acceleration is very light but have to lift pedal and drop rps for it to shift. Black smoke out of pipe when this occurs. Have to shift to N and apply pedal to prevent shut off at lights etc...that is my experience...
Observation: Both ICTs and crank sensor look recently replaced. Valve cover gaskets and trans pan have recently been replaced - all fluids look recently changed. Vacuum line on pass side engine that splits to a T has two leaks. Oil filter housing or pass valve cover leaking (poss rear main) and trans pan leaking. Vehicle appears to have cat delete - o2 sensors and wiring??
Diag: Consistent codes in this order 12, 37, 21, 15, 55 (I understand 12/55 are start/stop). Temp repair on vacuum leak noted above - no significant change in drivability.
Plans: check cap/rotor/wires and plugs but looks like a recent tune up done. Seems like fuel to lean but with cat/o2 non existent not sure what to do about that.
Should I check fuel pressure? Is there an external fuel pressure regulator/filter? Will induction service help? Thoughts on codes 37 and 15? and any other tips or advice. I am ok with this being a around town truck for light hauling but I want to know it won't shut off in front of oncoming traffic...etc.
Thank you!