Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: Vauxste on 22 August 2010, 20:13:49
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Hi guys
2.0 XEV still misfiring. Runs well for a couple of miles and sometimes more then bang light comes on and it will not pull and tacho goes berserk.It clears itself and next start light goes off.Have changed coil/leads/crank sensor as these codes came up.Have not changed cam sensor or MAF yet.Done a meter check on MAF as per autodata info.They say terminal 1 and earth should be zero resistance, I am getting a reading of 002.Does the ECU supply the earth for the MAF.Also on terminal 2 checks the volt readings are down as per the info I have from autodata.Sometimes they will read OK but they fluctuate badly and are mostly low readings. Do not want to throw more money at it and not get results. I will probably take it to an expert and have it plugged in. Can anyone help please before I tear what hair I have left from my head. Also on a paperclip test would the crank and cam code show all the time as engine not running. Started engine but light would not come on. HELP !!!!!!! :(
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With the car not running you should only get 12 and 31 when you paper clip it. Any other codes point to the problem. So what codes are you getting?
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Hi Welung
Codes I am getting in the order they came out are
0335 crank sensor which I have changed
0100 MAF which I done the checks as I said
0340 cam have not changed yet
0351 and 0352 coil which I have fitted new one and plug leads
Any ideas
Steve
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Ah I missed the 2001 part :-[
On 4 pots it's nearly always the cam sensor that goes, very rare to see a failed crank sensor. Does it struggle to start from cold?
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No it has always started first time. I am waiting for cam sensor to arrive, hopefully tomorrow. After doing checks on MAF I was thinking it could be that but I do not want to spend anymore money unless I am sure. Strange thing happened as well, when doing volt check on MAF the dash light came on when I touched terminal 2 with probe and went off when I revved engine. Hopefully and probably the meter was drawing the power low enough for this light to come on - if you know what I mean.
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Might be worth asking someone like JimBob or ElitePete who aren't far from you to check and clear the codes then check the live data to pinpoint the problem more acurately and to save you buying bits here and there :y
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I think you are right. There is an Independant Vauxhall expert near Chester not far from me. I think I will have to give then a ring in morning. Will let you know how I get on
Steve
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I think you are right. There is an Independant Vauxhall expert near Chester not far from me. I think I will have to give then a ring in morning. Will let you know how I get on
Steve
who are you thinking of?
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Its a garage called MW performance in Saltney,Chester they just deal with GM/Vauxhall stuff. Have you heard of them
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Live round the corner from them.
After the mess they left my wife's old cavalier in, and their total inability to use a tech2 properly, I wont ever use em again.
Roadrunners, also in saltney, are miserable, but have slightly better tech2 skills.
I could maybe clear codes, and do a live data read I can paste on here for you, but nothing else really due to some health issues.
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How could you do live data read. Would I have to bring car to you ?. By the way I am a vehicle mechanic back in the days when cars had proper stuff like plugs and points and carbs Ha Ha. I also work at Vauxhalls in Ellesmere Port thats the factory and not Lookers
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Yup, you drop the car round prob one evening, I plug in the computer and read away.
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What evening would be Ok for you. I am on nights next week so could not do it after 8. Thanks for your help
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ill check and let you know, Thur or Fri prob the best for me from 6:30 wont take long.
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Does it struggle to start from cold?
What about hot start?
I'm having cam sensor problems and will need it replaced soon. But the car starts every single time when it is cold.
Mine has a problem when starting hot
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Hi Mathewst
Starts from cold no probs - problem only arises when up to temp. It did cut out on Tuesday and would not start right away. Ordered a cam sensor from Vauxhall Car Parts online still waiting 6 days later Ho Hum I am sure it will be here tomorrow
Steve
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Nice to meet Steve yesterday...
Code read showed the following
Total number of fault codes: 5
P0100 - Mass Air Flow Sensor Voltage Low
(02) - Present
P0335 - Incorrect RPM Signal
(08) - Not present
P0340 - Camshaft Sensor Incorrect Signal
(08) - Not present
P0351 - Electronic Spark Timing (EST) Line Coil Cylinder 1+4 Voltage High
(01) - Not present
P0352 - Electronic Spark Timing (EST) Line Coil Cylinder 2+3 Voltage High
(01) - Not present
Maf came and went as intermittant afterwards, but it left here with no codes showing....
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Idle live data :
"My Naff Code Reader" 090714 - PC based diagnostic tool
Date and time> 27/08/2010. 18:44
Workshop information:
The Omega Man
Selected model> 2000 Omega-B Engine X 20 XEV
Control Unit:
Keyword #1: 6B
Keyword #2: 8F
Normal timing parameter set.
VIN: W0L0VBF69Y1031843
vehicleManufacturerECUHardwareNumber 90565947 MC
systemSupplierECUHardwareNumber: 2519A
systemSupplierECUSoftwareNumber: 21g21k49e
systemSupplierECUSoftwareVersionNumber: 0A4E
exhaustRegulationOrTypeApprovalNumber: S98003
systemNameOrEngineType: X20XEV
RepairShopCodeOrTesterSerialNumber: Not programmed
ProgrammingDate: FFFFFFFF
Identifier: 020D
CalibrationDate: 565SD010
CalibrationEquipmentSoftwareNumber: E1C00A00
Measuring blocks information:
Battery Voltage 13.9 V
Immobiliser Active
Immobiliser Signal Received
Engine Speed 704 RPM
Fuel Pump Relay Active 0V
TPS Signal (Throttle Position Sensor) 0.55 V
Mass Air Flow Sensor 0.18 V
Mass Air Flow Sensor 6.35 kg/h
Coolant Temperature 1.23 V
Coolant Temperature 85 °C
Intake Air Temperature 1.42 V
Intake Air Temperature 33 °C
Transmission Coding Manual Transmission
Park/Neutral Switch P - N 0V
A/C Information Switch (Air Conditioning) Inactive 0V
A/C Compressor Switch (Air Conditioning) Inactive 0V
Knock Control Disabled
Cyl.1 Knock Retard 0 °CA
Cyl.2 Knock Retard 0 °CA
Cyl.3 Knock Retard 0 °CA
Cyl.4 Knock Retard 0 °CA
Vehicle Speed 0 km/h
Secondary Air Pump Relay Inactive 12V
EGR Pulse Ratio (Exhaust Gas Recirculation) 0%
Fuel Tank Ventilation Valve 0%
O2 Sensor 4.492 mV
O2 Sensor Loop Closed
Air/Fuel Ratio Rich
O2 Integrator 0 Steps
O2-Loop BLM Idle (Block Learn Map) 139
O2-Loop BLM Partial Load (Block Learn Map) 134
Desired Engine Idle Speed 704 RPM
Idle Air Control 10 Steps
IAC Integrator (Idle Air Control) 122 Steps
IAC Adaptation Slope (Idle Air Control) 115 Steps
Torque Control 0%
A/C Relay (Air Conditioning) Inactive 12V
Telltale (Check Light) Off 12V
Simulated Idle Position Switch Active
Simulated Part Position Switch Inactive
Simulated Full Load Switch Inactive
Spark Angle before TDC (Top Dead Centre) 5 °CA
Engine Speed Limit Inactive
Injection Pulse 2.08 ms
Fuel Consumption 1%
Blink Code Request Inactive 12V
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Revved higher live data :
"My Naff Code Reader" 090714 - PC based diagnostic tool
Date and time> 27/08/2010. 18:46
Workshop information:
The Omega Man
Selected model> 2000 Omega-B Engine X 20 XEV
Control Unit:
Keyword #1: 6B
Keyword #2: 8F
Normal timing parameter set.
VIN: W0L0VBF69Y1031843
vehicleManufacturerECUHardwareNumber 90565947 MC
systemSupplierECUHardwareNumber: 2519A
systemSupplierECUSoftwareNumber: 21g21k49e
systemSupplierECUSoftwareVersionNumber: 0A4E
exhaustRegulationOrTypeApprovalNumber: S98003
systemNameOrEngineType: X20XEV
RepairShopCodeOrTesterSerialNumber: Not programmed
ProgrammingDate: FFFFFFFF
Identifier: 020D
CalibrationDate: 565SD010
CalibrationEquipmentSoftwareNumber: E1C00A00
Measuring blocks information:
Battery Voltage 13.9 V
Immobiliser Active
Immobiliser Signal Received
Engine Speed 5.056 RPM
Fuel Pump Relay Active 0V
TPS Signal (Throttle Position Sensor) 1.29 V
Mass Air Flow Sensor 1.62 V
Mass Air Flow Sensor 59.61 kg/h
Coolant Temperature 1.09 V
Coolant Temperature 92 °C
Intake Air Temperature 1.46 V
Intake Air Temperature 32 °C
Transmission Coding Manual Transmission
Park/Neutral Switch P - N 0V
A/C Information Switch (Air Conditioning) Inactive 0V
A/C Compressor Switch (Air Conditioning) Inactive 0V
Knock Control Disabled
Cyl.1 Knock Retard 0 °CA
Cyl.2 Knock Retard 0 °CA
Cyl.3 Knock Retard 0 °CA
Cyl.4 Knock Retard 0 °CA
Vehicle Speed 0 km/h
Secondary Air Pump Relay Inactive 12V
EGR Pulse Ratio (Exhaust Gas Recirculation) 55%
Fuel Tank Ventilation Valve 9%
O2 Sensor 4.218 mV
O2 Sensor Loop Closed
Air/Fuel Ratio Rich
O2 Integrator 114 Steps
O2-Loop BLM Idle (Block Learn Map) 138
O2-Loop BLM Partial Load (Block Learn Map) 134
Desired Engine Idle Speed 704 RPM
Idle Air Control 87 Steps
IAC Integrator (Idle Air Control) 128 Steps
IAC Adaptation Slope (Idle Air Control) 115 Steps
Torque Control 0%
A/C Relay (Air Conditioning) Inactive 12V
Telltale (Check Light) Off 12V
Simulated Idle Position Switch Inactive
Simulated Part Position Switch Active
Simulated Full Load Switch Inactive
Spark Angle before TDC (Top Dead Centre) 37 °CA
Engine Speed Limit Inactive
Injection Pulse 2.39 ms
Fuel Consumption 12%
Blink Code Request Inactive 12V
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I am not familiar with the 2.0 engine....but am not sure the MAF readings look right, which goes hand in hand with the intermittant MAF code...
Car runs very nicely and is smooth and quiet, jumped about a little, prob with aircon load.
The old solar sensor code in the climate ecu, which many facelifts suffer with.
Least the codes are gone now, so any that reveal in the future can be acted upon easier :y
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Misfire and poor running is now cured. It was the cam sensor after all.It now has new coil and crank sensor as well. Thanks to Jimbob, he cleared the codes and checked it live. All Ok except for what could be an intermittent MAF fault which does not show up when driving.
Steve :)
P.S Thanks James
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No worries, nice to meet you, ill happily check em again in a few weeks and check nothing surfaces :y