Hi Scotty,
I was watching you're video 'This Scan Tool Destroyed My Car and I'm Mad as Hell'.
Recently bought this 2010 Corolla 1.8L 2ZR-FE, Manual transmission 5 speed, it has 187500Km. It has no codes and mostly runs well though it has some roughness to it running after slowing down at idle. I haven't driven manual in 30 years so am rusty though it does seem to stall too easliy from a start.
I've changed the plugs (which i dont think were ever changed and looked worn out but had a nice colour and no deposits), cleaned the throttle body all of which have made it run much smoother. After seeing you're video above I tried the Blue Driver scanner and noticed the timing flipping all over as you had described in the video. I have swapped the coils around on cylinder 1&3, still the same.
A few questions:
Could it be something else other than chain with the timing flipping as you described?
If the chain is actually bad, which i have a sense it is, is the car worthwile fixing? What i mean is if the chain is bad which from my understanding shouldnt' be at that #of Km's means the oil likely wasnt changed frequently. Are there likely to be other damages to the engine making the timing chain just the first of a string of problems?
I was in a hurry when i bought the car from a family member who didnt have the car long and didnt do my due diligence of running the scanner before buying. big mistake! live and learn.
You've sold me on Toyotas Scotty and I don't blame the car or manufacturing as the first owner never took care of it.
I'm using this video as a guide: https://www.youtube.com/watch?v=mDit5YiBAGw
The advice on timing starts 6:48 or so and describes the situation I have with the Corolla and its wild range at idle.
Fuel trim is negligible, almost 0 after some minor maintanance.
i also have a 2010 corolla manual, i think that is all normal, in mine if you push the clutch in and let the engine rev down to idleat certain speeds/rpms it almost feels like it wants to die out, or revs too low for just a second then it goes back to normal, as far as it stalling to easy from a stop, mine seems to be that way when comparing to other manuals as well, seems like your either giving it too much gas taking off or not enough
it's normal for ignition timing to move around a bit. The computer adjusts it to suit engine conditions.
Check your air filter, and use your bluedriver to take some engine readings. MAF, fuel trims, ECT, etc.
Check the cam positioning sensor. It controls the ignition timing.
