I cleaned the throttle body, changed the PCV valve, both cam sensors, and crank sensor. The aforementioned codes did not come back up and I only have the generic P0300 code since. As far as the rough noise, it probably wouldn't come out on video/audio that well. It vibrates more than it is loud but it does both at a level above normal. I suppose one could compare it to how it would run with a misfire. I haven't ruled out the coil packs being defective since I paid $52 for all six. What I want to do is look at the live data stream for the O2 sensors, STFT, LTFT, as well as check the coil packs and injectors (for sporadic firing). The problem now is that my CE light will start flashing within 60-90 seconds of startup. I was able to get to a CL (closed loop) and saw I was -17 for STFT1 and 22 for STFT2. That makes me think I'm running rich on bank 1 (where I found #3 plug with black soot/grime after only 2k miles) and lean on bank 2. The frustrating part is my hands are sort of tied because I don't want to run the engine when the CE light is flashing so I can't do some of these other checks I would like to do.hm.... thats interesting yes check the wiring harness for the throttle body and the pedal postion switches very well, you might have something wrong with the bcm or ecm
Oh yeah, could be coincidental but I did lose power to my stereo the other day. Also, I have had an issue where the car won't start/turn over every once in a while on the first attempt (nothing happens) but starts fine on the second attempt. I've never given it a second thought simply because the plastic part on both my keys is cracked and glued back together so I figured maybe the chip was out of alignment? Anyway, my year (2007) isn't affected by the IPDM recall but perhaps the ECM could be tied in? My readings for STFT are from this morning but points at multiple issues so not really sure where to go from here.
What I would like to do:
1 Check coil pack resistance & unplug each to ensure they're functioning
2 Check resistance and voltage of fuel injectors and listen for rhythmic clicking (vs. sporadic)
3 Run smoke through the system to detect leaks
4 Verify via live data stream if cats are functioning or disconnect cat(s) and/or exhaust for possible clogs
I don't want to run the engine while the CE light is flashing so I wouldn't be able to test since it happens within 90 seconds of startup. Would you all agree that because I am already in a fault code, I shouldn't run the engine once it begins flashing?
Oh yeah, I've now got all my parts for the timing chain guide fix. This latest diagnostic reading makes me think that it can't be a timing issue if one bank is rich and the other bank is lean.