Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: Jimbob on 20 October 2010, 21:37:34
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Had a flashing emissions light for under 30 seconds...
checked the codes, and had a 300, 303 304
so random missfire along with pots 3 and 4.
Any ideas for a cause as these are on opposite sides?
has been very cold here today, and the car had been started twice and moved just a couple of yards each time during the day.
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imo ignition.. connections may not conduct electricity properly or some moisture..but I'm sure its electrical.. and it will be ok after warm up..
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aye, moisture / condensation was my guess.
just the pots confused me, would have expected 2 on one side rather than one on each
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should add plugs are all 3 months old..
dis packs both original, one is a little worse for wear. But no symptoms or codes before today
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Did you get a new MAF?
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yes, new genuine bosch maf :y
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Sorry, I dont go with the moisture theory, the setup is mega water tight and it takes little time for that area to get warm.
Plus, both banks at the same time is MUCH to much of a coincidence.
Hence I suspect air supply as its common to both banks and hence the MAF question
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I wonder if it fouled a plug or two when it was being shunted around?
I have had mine misfiring after similar abuse. It does seem to throw a lot of fuel in for the first few seconds after a start in very cold weather, and if it isn't run for long enough to purge it between starts... :-/
See if it recurs, I guess.
Kevin
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Will certainly keep a close eye, hope that MAF is fine, wasnt cheap..
The 2 moves were a car length this morning, when the car was icy, and then the car length back again a few hours later...
then a few hours before the next start where the light flashed immediately.
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did 2 x 20 mile trips without missing a beat since
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Will certainly keep a close eye, hope that MAF is fine, wasnt cheap..
The 2 moves were a car length this morning, when the car was icy, and then the car length back again a few hours later...
then a few hours before the next start where the light flashed immediately.
Can you get live data out of it and check MAF reading at idle when warm? Also have a look at the fuel trims? That should confirm the MAF is OK.
Kevin
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ill do that after work tomorrow :y
not going out there again now! its cold enough to freeze the balls of a brass monkey
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Will certainly keep a close eye, hope that MAF is fine, wasnt cheap..
The 2 moves were a car length this morning, when the car was icy, and then the car length back again a few hours later...
then a few hours before the next start where the light flashed immediately.
apparently a very common call out for recovery firms at Christmas when a car might be moved a few feet to let a family member move their car and then the same again a few days later .... all 'on choke'
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ran fine this morning, no issues, will grab the live data later
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Will certainly keep a close eye, hope that MAF is fine, wasnt cheap..
The 2 moves were a car length this morning, when the car was icy, and then the car length back again a few hours later...
then a few hours before the next start where the light flashed immediately.
apparently a very common call out for recovery firms at Christmas when a car might be moved a few feet to let a family member move their car and then the same again a few days later .... all 'on choke'
my old rover 827 would do that,start it cold and move it a few feet and switch off and if you tried to star it again it would be a bitch to start but if left a few hours then no problem
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had the misfiring due to a cracked scuttle letting in most of the rain of the past week.replaced the scuttle ,new 2/4/6 coil pack old one was cracked,new plugs all round oh hia to siphon 1/3/5 plug wells.o.k so far. :y
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Just grabbed the data
nothing looks very out the ordinary to me...
Measuring block, Idle, Fast (2000rpm) idle
Battery Voltage 12.6 V 12.7 V
Main Relay Active Active
Fuel Pump Relay Active Active
APP Sensor 1 (Accelerator Pedal Position) 1.02 V 1.20 V
APP Sensor 2 (Accelerator Pedal Position) 0.51 V 0.61 V
Calculated Pedal Position 0% 4%
APP at Idle Position (Accelerator Pedal Position) Active Inactive
TP Sensor 1 (Throttle Position) 0.60 V 0.74 V
TP Sensor 2 (Throttle Position) 4.41 V 4.29 V
Calculated Throttle Position 1% 4%
Throttle Position Idle Partial Load
Engine Speed 632 RPM 2.151 RPM
Mass Air Flow Sensor 1.37 V 1.84 V
Mass Air Flow Sensor 14 kg/h 39 kg/h
Coolant Temperature 0.98 V 1.06 V
Coolant Temperature 90 °C 87 °C
Intake Air Temperature 3.35 V 3.45 V
Intake Air Temperature 25 °C 23 °C
Torque Control Inactive Inactive
Tank Sensor 2.25 V 2.29 V
Tank Sensor 40 L 40 L
Park/Neutral Switch P - N 0V P - N 0V
A/C Information Switch Active Active
Brake Switch 1 Inactive Inactive
Brake Switch 2 Inactive Inactive
Clutch Switch Active Active
Vehicle Speed 0 km/h 0 km/h
Cruise Control Tip Switch Inactive Inactive
Cruise Control Inactive Inactive
Vehicle Speed in Cruise Control Range Inactive Inactive
Fuel Tank Ventilation Valve 27% 91%
Knock Control Inactive Inactive
B1S1 O2 Sensor Heater (Bank 1 Sensor 1) Active Active
B1S1 O2 Sensor (Bank 1 Sensor 1) 371 mV 742 mV
B1S1 Air/Fuel Ratio (Bank 1 Sensor 1) Lean Rich
B1S2 O2 Sensor Heater (Bank 1 Sensor 2) Active Active
B1S2 O2 Sensor (Bank 1 Sensor 2) 98 mV 117 mV
B1S2 Air/Fuel Ratio (Bank 1 Sensor 2) Lean Lean
B2S1 O2 Sensor Heater (Bank 2 Sensor 1) Active Active
B2S1 O2 Sensor (Bank 2 Sensor 1) 684 mV 762 mV
B2S1 Air/Fuel Ratio (Bank 2 Sensor 1) Rich Rich
B2S2 O2 Sensor Heater (Bank 2 Sensor 2) Active Active
B2S2 O2 Sensor (Bank 2 Sensor 2) 59 mV 117 mV
B2S2 Air/Fuel Ratio (Bank 2 Sensor 2) Lean Lean
O2 Sensor Loop Closed Closed
B1 Long Term Fuel Trim (Bank 1) 1% 1%
B2 Long Term Fuel Trim (Bank 2) 0% 0%
B1 Short Term Fuel Trim (Bank 1) 3% 1%
B2 Short Term Fuel Trim (Bank 2) 2% -1%
Requested Torque (Automatic Transmission) 199 Nm 199 Nm
Requested Torque (Traction Control) 199 Nm 199 Nm
A/C Relay (Air Conditioning) Active Active
Malfunction Indicator (MI) Off Off
Service Vehicle Soon (SVS) Indicator Off Off
Intake Manifold Valve 1 Inactive Inactive
Intake Manifold Valve 2 Inactive Inactive
Engine Speed 632 RPM 2.151 RPM
Desired Idle Speed 650 RPM 650 RPM
Idle Speed Offset 0 RPM -1.000 RPM
Idle Speed Offset Inactive Inactive
Vehicle Acceleration 0.0 m/s2 0.0 m/s2
Ignition Dwell Angle 2.1 ms 2.1 ms
Injector Time 4.5 ms 3.4 ms
Ignition Spark Angle 6.2 °CA 31.1 °CA
B1 Knock Sensor Signal (Bank 1) 0.0 V 0.0 V
B2 Knock Sensor Signal (Bank 2) 0.0 V 0.0 V
Relative Engine Load 5% 4%
Ignition Status On 12V On 12V
Normal Engine Operating Temperature Active Active
ETC Limp Home Mode (Electronic Throttle Control) Inactive Inactive
Ambient Temperature 9 °C 9 °C
Vehicle Speed Pulse Not Received Not Received
Dec. Fuel Cutoff (Deceleration) Inactive Inactive
Actual Accelerating Enrichment 0 0
Fuel Tank Ventilation Valve Active Active
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Yep. Looks about right. :y
Kevin
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Will certainly keep a close eye, hope that MAF is fine, wasnt cheap..
The 2 moves were a car length this morning, when the car was icy, and then the car length back again a few hours later...
then a few hours before the next start where the light flashed immediately.
apparently a very common call out for recovery firms at Christmas when a car might be moved a few feet to let a family member move their car and then the same again a few days later .... all 'on choke'
The AA used that excuse with me once.. after he'd gone (having turned it over until it finally coughed into life) and it once again failed to start I checked properly .. king lead from the distributor was completely melted - that might have been the real problem, then.. ;D