Hello,
I`m new here, so please treat me right
Also I`m not native speaker, so please don`t judge me for my English
A new for me 2014 Camaro SS M6 is acting pretty strange
The car had all kind of erros on the dash because the previous guy, who worked on this car, unplugged one of the ЕCM connectors, while the battery was still attached.
Some of the errors were so called "permanent", so I made the universal drive cycle and the "permanent" errors dissapeared, but 2 stayed - U0401 and Missfire Detected
Regarding U0401 - as I know - this error is more likely to be on a Auto car, but not on a manual - correct me if I`m wrong.
Also checked the grounds between the engine and the body - dissassembled - all looks good - assembled again.
Car is starting every time I hit the key, but its runnng very rough.
So, what I did till now:
1. Drove the car for ~40km at different RPM and speed. It reacted pretty strange - in one moment it is almost allright and seconds later loosed power and started to shake. - the log will be uploaded. As I am pretty new to HP Tuners and all the info that it provides I am not sure if everything looks alright, so please guide me.
2. I have a FLIR (thermal) camera on my phone and used it to check if there is any difference in the temp on every exhaust port and also at the rear of the car at the tail pipes - here comes the strange thing - looking the engine - I am completely sure that cyl. 1,2,3,4 (the most front 4 cyls) are hot and cyl 5,6,7,8 (the cyls in the back) are barely working. Also looking at the tail pipes - the drivers side seems to be hotter than the passenger side.
3. Then replaced spark plugs and wires with new - started the car and in the first 30sec it sounded OK, but the engine was still shaking, minute later and it was sounding as before .
4. Then decided to change the coils on drivers side - coils from 1,3 (the hot cyls) was placed on cyl 5 and 7, just to check if failed coil caused that - started the engine and it was all the same - cyl 1,3 were hot and cyls 5 and 7 colder as before.
5. Checked the compression: Cyl 1,3,5,6,7 - 145psi, Cyl 2 - 125psi, Cyl 4 rised to 145psi but in 5 seconds it dropped to 70psi (tested 4 times), cyl 8 - I was not able to reach it with the hose for the compression meter tool as it is cold here right now and I could not bend the hose enough so cyl 7 was impossible for me.
Anyway - somewhere between all the tests something grabbed my attention - drivers side catalityc converter was glowing red. Immediately checked passenger side and it was fine.
As I know - Cat is glowing red when it`s clogged or when there is raw fuel from not working cylinder.
Then I have decided to take out all injectors and to take them to my injector doctor just to flow check them - they are performing all equal.
Then I checked the fuel pressure on the rail - 59psi@idle but when I shut it off and came back after 30min and it was 48psi -I suppose this is OK.
Right after that I have decided to take of the valve covers and to start the engine to see if every rocker is moving as expected and they are OK.
So please check the attached log and tune files and give me some understanding what could be wrong.
Thank you in advance!
Best regards,
Tomа