ignition coil

[jpbroad1970]

are the coil packs prone to faliure i understand the cam timing is done through this too
i had a code come up earlier i think p0340.
the only thing i have been having trouble with is if you drive off a little soon after starting the car especialy in reverese the revs go all over the place and it takes a while to settle ,doing me t***s in.
i have blanked the egr, new gm plugs ,egr cheater & cleaned the throttle body, reset the throttle body im just stumped

some readings

Battery Voltage 13.8 V
Ignition Status Off 0V
Main Relay Inactive
Engine Speed 744 RPM
Fuel Pump Relay Active
APP at Idle Position (Accelerator Pedal Position) Active
APP Sensor 1 (Accelerator Pedal Position) 0.96 V
APP Sensor 2 (Accelerator Pedal Position) 4.49 V
APP Sensor 1 Learned Lower Position (Accelerator Pedal Position) 0.94 V
APP Sensor 2 Learned Lower Position (Accelerator Pedal Position) 0.93 V
Calculated Pedal Position 0%
Calculated Throttle Position 7%
Throttle Position Idle
TP Sensor 1 (Throttle Position) 4.08 V
TP Sensor 2 (Throttle Position) 0.86 V
TP Sensor 1 Learned Lower Position (Throttle Position) 0.61 V
TP Sensor 2 Learned Lower Position (Throttle Position) 0.61 V
Throttle Position PWM Servo Signal 10%
Mass Air Flow Sensor 11 kg/h
Intake Air Temperature 38 °C
Knock Control Inactive
EGR Valve (Exhaust-Gas Recirculation) Inactive
EGR Position Feedback (Exhaust Gas Recirculation) 2.15 V
EGR Position Commanded (Exhaust Gas Recirculation) 5%
EGR Pulse Ratio (Exhaust Gas Recirculation) 5%
Fuel Tank Ventilation Valve 0%
Fuel Tank Ventilation Valve Inactive

 

[solorider]

on my first 2.2 astra i had a lack of power at low revs and only had any go at high revs,i had no eml.i fitted a new coil pack and it was like a new car so yes the coils do fail and not always due to a misfire

 

[jpbroad1970]

i fitted new coil and she runs like a dream and no faults

 

[Matt]

Excellent, all sorted then

 

[jpbroad1970]

yeah got there in the end i new it couldnt be too much