slb21f67
Newbie
i have a 97 C3500 5.7. Yesterday started driving and after around 3 minutes it started running a little rough and quickly got worse. Check engine light came on as well. Before I could get it back home lost all power while in gear and had to tow. Truck would run at idle and will rev in neutral, but put in gear and bogs down and barely move.
Today.. codes were O2 sensor bank 2 sensor 1 and sensor 2 no activity. I replaced them both today and the check engine light is gone, erased codes and they did not come back, though no change in performance. I took a video for the sound but seems mp4 will not upload. When pressing the gas there is a hesitation with a heavier, thumpier sound, most notable at low rpm and takes slightly longer than normal to reach higher rpm.
Background.. 3 months ago changed fuel pump, fuel filter, spark plugs and wires, rotor cap. Today the fuel pressure is 52 at idle and 58 at higher rpm. I have not driven the truck for about a week, and during this time changed out the A/C compressor and accumulator, no issues. I thought perhaps I knocked something loose and have been all over engine but can't find anything that looks off.
Attached is my current scan info at idle. I have browsed several threads but haven't found anything yet that stood out, if anyone can point me to where I should troubleshoot next.. much appreciated.
Today.. codes were O2 sensor bank 2 sensor 1 and sensor 2 no activity. I replaced them both today and the check engine light is gone, erased codes and they did not come back, though no change in performance. I took a video for the sound but seems mp4 will not upload. When pressing the gas there is a hesitation with a heavier, thumpier sound, most notable at low rpm and takes slightly longer than normal to reach higher rpm.
Background.. 3 months ago changed fuel pump, fuel filter, spark plugs and wires, rotor cap. Today the fuel pressure is 52 at idle and 58 at higher rpm. I have not driven the truck for about a week, and during this time changed out the A/C compressor and accumulator, no issues. I thought perhaps I knocked something loose and have been all over engine but can't find anything that looks off.
Attached is my current scan info at idle. I have browsed several threads but haven't found anything yet that stood out, if anyone can point me to where I should troubleshoot next.. much appreciated.
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