mjollnir

Guys, I'm trying to start up the LQ4 I bought used and assembled with bits

Fuel pressure is good (but dropping to 40 when I crank)
Engine starts for 0.1 second then stop detonating

Here are the DTCs:

• 0x10: P0030 - HO2S Heater Control Circuit (Bank 1, Sensor 1) (Pending, History)
• 0x10: P0036 - HO2S Heater Control Circuit (Bank 1, Sensor 2) (Pending, Current, History)
• 0x10: P0050 - HO2S Heater Control Circuit (Bank 2, Sensor 1) (Pending, History)
• 0x10: P0056 - HO2S Heater Control Circuit (Bank 2, Sensor 2) (Pending, Current, History)
• 0x10: P0107 - Manifold Absolute Pressure/BARO Sensor Low (Pending, Current)
• 0x10: P0351 - Ignition Coil A Primary/Secondary Circuit (Pending, History)
• 0x10: P0353 - Ignition Coil C Primary/Secondary Circuit (Pending, Current, History)
• 0x10: P0355 - Ignition Coil E Primary/Secondary Circuit (Pending, History)
• 0x10: P0357 - Ignition Coil G Primary/Secondary Circuit (Pending, Current, History)
• 0x10: P0452 - Evaporative Emission System Pressure Sensor/Switch Low (Pending, Current, History)
• 0x10: P0522 - Engine Oil Pressure Sensor/Switch Circuit Low (Current)
• 0x10: P0622 - Generator Field Terminal Circuit (Current)
• 0x10: P0641 - Sensor Reference Voltage A Circuit/Open (Pending)
• 0x10: U0107 - Lost Communication With Throttle Actuator Control Module (Pending, Current)

Coils ACEG = cyl 1, 3, 5, 7 ? Is that driver side?

I attached the HP Tuner log file

Old Geezer

iTrader: (3)

"Coils ACEG = cyl 1, 3, 5, 7 ? Is that driver side?" Yes. Sounds like you could have a harness issue. What are you using? Reworked or new harness?
Battery fully charged? ALL grounds connected and tight?
Do you have inj pulse?
VATS deleted? If it starts, then dies, could be VATS is not deleted.
Or, you have the ecm powered on the start side of the key, only. [Engine starts for 0.1 second then stop detonating.]

mjollnir

Injectors works, except n°1 which is stuck closed
I'll check the coils/spark plugs tomorrow.
It's a reworked harness and VATS has been deleted

mjollnir

OK, one coil plugs (driver side) was not plugged correctly

But engine still has the same symptons and doesn't start:
0x10: P0030 - HO2S Heater Control Circuit (Bank 1, Sensor 1) (Pending, History)
0x10: P0036 - HO2S Heater Control Circuit (Bank 1, Sensor 2) (Pending, Current, History)
0x10: P0050 - HO2S Heater Control Circuit (Bank 2, Sensor 1) (Pending, History)
0x10: P0056 - HO2S Heater Control Circuit (Bank 2, Sensor 2) (Pending, Current, History)
0x10: P0107 - Manifold Absolute Pressure/BARO Sensor Low (Pending, Current)
0x10: P0452 - Evaporative Emission System Pressure Sensor/Switch Low (Pending, Current, History)
0x10: P0522 - Engine Oil Pressure Sensor/Switch Circuit Low (Current)
0x10: P0622 - Generator Field Terminal Circuit (Current)
0x10: P0641 - Sensor Reference Voltage A Circuit/Open (Pending)
0x10: U0107 - Lost Communication With Throttle Actuator Control Module (Pending, Current)

Is it normal that the intake blade (TB) doesn't move when I press the pedal? (Electronic TAC)

Old Geezer

iTrader: (3)

Is it normal that the intake blade (TB) doesn't move when I press the pedal? (Electronic TAC) No.
See: 0x10: U0107 - Lost Communication With Throttle Actuator Control Module (Pending, Current)

01CamaroSSTx

iTrader: (3)

I take it your aware of the different systems 24X or 58X

mjollnir

I am but it really got out of my mind! How can I know if my PCM is coded for 24 or 58 ? With HP Tuners?

01CamaroSSTx

iTrader: (3)

Do you know of the engine is a 24x or 58x?

Tip:

24X systems have black crank and cam sensors and the ECM's for those are in various make and models from 98-05 I believe but not certain. The 58X systems had gray cam and crank sensors with ECM;s 06 and up.