Vauxhall Astra-G 1.4i 2002 - Uneven idle and revs hang upArchived Message
Posted by Eddie Ronayne on April 21, 2006, 5:26 pm
2002 Astra-G 1.4 16v Z14XE
-------------------------------------------
Sales car, drove fine and renewed spark plugs & full service incl. timing belt & cleaning throttle body...
Customer picks up car and comes back today... Uneven idle, revs "hang up" between gear changes
Just had a VERY QUICK look but: No Fault Codes
Datastream at Idle: Battery voltage 14.0V Ignition status Active Main relay Active Fuel pump relay Active APP sensor 1 0.95V APP sensor 2 0.46V Calculated pedal position 0% APP sensor at idle Active Throttle pos. sensor 1 0.56V Throttle pos. sensor 2 4.43V Calculated throttle pos. 6% Throttle position Idle Engine speed 819rpm Desired engine idle speed 784rpm MAP sensor 2.24V MAP sensor 52kPa Coolant temperature 1.87V Coolant temperature 96 C Intake air temperature 2.73V Intake air temperature 40 C Fuel level sensor 13.46V Fuel level sensor 15Litres A/C pressure switch 0kPa Brake switch 1 Inactive Brake switch 2 Inactive Vehicle speed 0km/h O2 sensor loop Closed EGR valve Inactive Fuel tank vent. valve Inactive EGR position command 0% EGR position feedback 1.48V Fuel tank ventilation 0% Knock control Inactive Bank 1 sensor 1 air / fuel ratio Lean Bank 1 sensor 2 air / fuel ratio Rich Bank 1 sensor 1 O2 sensor heater Active Bank 1 sensor 2 O2 sensor heater Active Bank 1 sensor 1 O2 sensor 64mV Bank 1 sensor 2 O2 sensor 829mV Bank 1 long term fuel trim -15% Bank 1 short term fuel trim -2% Malfunction Indicator OFF Service vehicle soon OFF Desired engine idle speed rpm Idle speed offset invalid value Ignition dwell angle 2.2 Injector time 3.5ms Ignition spark angle Ignition retard knock cylinder 1 0Deg ca Ignition retard knock cylinder 2 0Deg ca Ignition retard knock cylinder 3 0Deg ca Ignition retard knock cylinder 4 0Deg ca ETC limp home mode Inactive Total misfire 12 Deceleration fuel cut off Inactive
Manifold vac seems low.
Emissions fine.
Has anyone ever seen Coil Pack to cause this after spark plug change?