LQ4 will not start
Thread Starter
On The Tree
Joined: Jan 2010
Posts: 177
Likes: 1
From: Belgium
LQ4 will not start 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:
I attached the HP Tuner log file
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)
I attached the HP Tuner log file
"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.]
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.]
Thread Starter
On The Tree
Joined: Jan 2010
Posts: 177
Likes: 1
From: Belgium
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)
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)
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)
See: 0x10: U0107 - Lost Communication With Throttle Actuator Control Module (Pending, Current)
Thread Starter
On The Tree
Joined: Jan 2010
Posts: 177
Likes: 1
From: Belgium
Trending Topics
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.
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.
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