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Mostly because I've been having electrical issues, and I've replaced most of my grounds, and cleaned up most of the wiring, and also fired the parts cannon, including new Opel injectors and additional rounds of ZZP tunes. When I did my clutch job which involves removing the the fuse box, once I was finished and put everything back on, the car was effectively dead. The GM tech told me that there's a connectivity problem with it after muxing with it several times before he was able to seat it with dielectric grease fully.
I'll start (from cold) as running very lean and eventually running full blown rich, with the occasional P0101. I've replaced almost every sensor under the hood with the proper OEM, no vacuum or boost leaks.
Plugged in gauge scanner, wiggled it around, car goes haywire.
Plugged in hptuners scanner (mind you, not even with my laptop plugged in on the other end) car goes haywire.
*nothing plugged in to scanner, wiggle dlc, nothing happens. Which makes sense in a way, without a scnnaer plugged in, the DLC is kinda of an inactive dead end, but the moment something is plugged into, a bad connection can be triggered by the system.
So I went back underneath the dlc , looks like two of my new connections were weak and I could pull apart, fixed those up and ran out of time.. Plugged in each scanner after really quickly, wiggled and nothing happened.
Will have to try more tonight.
Would be insane if it was still DLC, all the connections feel solid now, soldered, heat shrink and can't pull apart, fingers crossed
Think I might tear up my interceptor gauge cable, look for a break under the wiring sheath.
Over 6 years of use it developed a bend, and it seems touching that bend sets off the car.
While issues have been observed with other scanners, perhaps that was just the loose DLC wiring (which has been repaired now) .
But the interceptor cable seems to be much worse.
Apart from inspecting the wiring, I could leave it unplugged. See if I still get stalls while its not plugged in...
the gauge is always plugged in, so when I do experience issues, I'm usually unplugging the interceptor and then plugging in my laptop.
Noting that no issues with the cable plugged in, but the moment I plug the gauge into the cable (while having a little force on the bend in the cable) it goes haywire right away.
hmmm maybe I should try this gauge and cable on a different car. See if it acts up in the exact same way, just would need to find a car….
A gauge by itself shouldn't interrupt anything unless you have a couple breaks in the live power wires which are touching other connections or arcing out.
At the start of the log, car is showing 2nd gear while in Park, as it should.
10 seconds into the log, car starts up in 1st gear and fails to hold it stalling out.
24 seconds into the log I attempt a restart, car is now in 2nd gear, starts up and runs fine.
Jan 7th log shows the exact same thing!
So why could this be happening?
At the start of the log, car is showing 2nd gear while in Park, as it should.
10 seconds into the log, car starts up in 1st gear and fails to hold it stalling out.
24 seconds into the log I attempt a restart, car is now in 2nd gear, starts up and runs fine.
Jan 7th log shows the exact same thing!
So why could this be happening?
Normally when this happens, it's a misalignment with the shifter itself (the selectors do get worn down over time), but with all the rest of the weirdness happening, there are gremlins lurking.
Normally when this happens, it's a misalignment with the shifter itself (the selectors do get worn down over time), but with all the rest of the weirdness happening, there are gremlins lurking.
Gonna do some ground work finally tomorrow, should be nice. Kinda looks like it’s the TCM taking the network down since ECU is reporting faults but the TCM did not.
im all my research, it looked like there was just one ground under the coolant bottle, as I could only see one. However there was a 2nd ground on the same stud coming from the cowl so it couldn’t be seen till I removed the coolant bottle.
cleaned up negative battery terminal ground. Cleaned engine jump post.
gonna re assemble see if it fixed it
Was going into town and my wideband was reading full lean, started watching narrowband and it was also reading full lean.
pulled over, scanned the car, dropped communication right away.
swapped tunes, no change. P0106
decided to go home at that point, pulled apart the car a little, Damaged my OBD port playing with the pins so I’ll have to replace that now. I just don’t get it.
Attempted to start with throttle applied this morning.
car fired and died very quick. Tried again several more times, same thing, car dies immediately.
it does not like throttle input. Might have to try swapping throttle bodies
