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[Kevin Wood]

63.5 degree ignition advance too!

That live data doesn't look trustworthy to me.

[steve6367]

Gendan EngineCheck Pro with ELM327 v1.4b USB interface.

That is a freeze frame which I think it takes from the ECU? (although clearly the reader could screw it up in the process). When I get home I can grab some live data and post, certainly the MAF does not show 0 there.

Or are we just saying my reader is giving me rubbish? 

Steve

[steve6367]

Here is another Freeze Frame from a different date - i.e. the fault has been logged, cleared and returned several times:

Freeze Frame data
Fault code   Sensor Value P0170   
Sensor values:   
Calculated Load   63.53 %
Coolant Temperature   78. C
Short Term Fuel Trim Bank 1   12.5 %
Long Term Fuel Trim Bank 1   11.72 %
Short Term Fuel Trim Bank 2   -100. %
Engine Speed   2725 rpm
Vehicle Speed   67 mph
Ignition Timing Advance   7.50 º
Intake Air Temperature   17.00 ºC
Air Flow Rate (MAF)   2.67 g/s
Absolute Throttle Position   2.75 %
Oxygen Sensor 1 - Bank 1 voltage   0.12 V
Oxygen Sensor 2 - Bank 1 voltage   0.42 V
Fuel System 1 Status   Closed Loop

[steve6367]

One more (last one!) from when the HG Failed and is was misfiring:

Freeze Frame data
Fault code   Sensor Value P0302   
Sensor values:   
Calculated Load   71.37 %
Coolant Temperature   93. C
Short Term Fuel Trim Bank 1   0. %
Long Term Fuel Trim Bank 1   11.72 %
Short Term Fuel Trim Bank 2   -100. %
Engine Speed   3119 rpm
Vehicle Speed   30 mph
Ignition Timing Advance   63.50 º
Intake Air Temperature   14.00 ºC
Air Flow Rate (MAF)   0.00 g/s
Absolute Throttle Position   7.06 %
Oxygen Sensor 1 - Bank 1 voltage   0.42 V
Oxygen Sensor 2 - Bank 1 voltage   0.42 V
Fuel System 1 Status   Open Loop (accelerating)

[steve6367]

Today ECL on and:

Freeze Frame data
Fault code  Sensor  Value P1130 
Sensor values:   
 Calculated Load  33.33 %
 Coolant Temperature  87. C
 Short Term Fuel Trim Bank 1  12.5 %
 Long Term Fuel Trim Bank 1  11.72 %
 Short Term Fuel Trim Bank 2  -100. %
 Engine Speed  1807 rpm
 Vehicle Speed  44 mph
 Ignition Timing Advance  6.00 º
 Intake Air Temperature  33.00 ºC
 Air Flow Rate (MAF)  3.93 g/s
 Absolute Throttle Position  3.92 %
 Oxygen Sensor 1 - Bank 1 voltage  0.37 V
 Oxygen Sensor 2 - Bank 1 voltage  0.42 V
 Fuel System 1 Status  Closed Loop

Some live data after code cleared:





Code would suggest Lambda? Although they both look fine on the graph  Still driving fine other than brief rough running on a warm start.

Steve
     
 

[steve6367]

Maf reading 0 according to that.

Air temp also seems hot

What device are you using?

Does anyone know what they normally get? The 28C in my live data was with an amdient of 12C.

[steve6367]

Any thoughts on the data posted? Or anymore diagnostics anyone?

Bit of shame after getting the HG done to have the ECL light on all the time and I gues it wont pass its MOT next month either :-(

Steve

[SIR Philbutt]

...

Plugging in I have stored P0170 Fuel Trim Malfunction.

Mine does that and have concluded it is when switch on/off LPG. If not causing a permanent spanner light (only when ign on - not running) it is not something of great significance IMO

HTH
Phil

I would say it is significant. On an LPG car it usually indicates that the LPG system is poorly mapped. On a petrol car it's an indication that something is significantly degrading the accuracy of the fuelling. There is quite a wide margin of adjustment before this code is stored, so something has gone badly wrong if this code is being reported. As said, air leaks, MAF and lambda sensor issues are the usual suspects.

Kevin - to ellaborate.

It seems to happen if the LPG tries to switch in at the "wrong time", eg accellerating. Also if the LPG runs out when accellerating or at high speed. This tends to cause a slight "stutter" during the transition and then next time I switch on the ign the spanner light does not go out until the engine is started (normally would go out after a couple of sec's). The code is the only one stored when I get the chance to check.

So, before I go and try looking for something wrong, is there something I could find and resolve.

The LPG system is professionaly installed and serviced and mapping checked every year and I have always had this occurance with both my LPG'd cars

[steve6367]

So I've been over it agian at the weekend and can't find any trapped wiring, air leaks etc

Driving home today and on comes the EML, but nice and near home so I can leave it running and get the code reader on:



Live Lambda data:



Then switch off and back on again and:



This all looks a little strange to me. Does the actual ECU often go wrong as I am not sure I believe what it is reporting now.

Steve

[steve6367]

Any thoughts from the panel? 

[Andy A]

Gendan EngineCheck Pro with ELM327 v1.4b USB interface.

That is a freeze frame which I think it takes from the ECU? (although clearly the reader could screw it up in the process). When I get home I can grab some live data and post, certainly the MAF does not show 0 there.

Or are we just saying my reader is giving me rubbish? 

Steve

Steve, does the EngineCheck Pro software, cover all Vauxhauls? I was told that I would need to use the Vauxcheck software with the Omega when I asked.

[steve6367]

Gendan EngineCheck Pro with ELM327 v1.4b USB interface.

That is a freeze frame which I think it takes from the ECU? (although clearly the reader could screw it up in the process). When I get home I can grab some live data and post, certainly the MAF does not show 0 there.

Or are we just saying my reader is giving me rubbish? 

Steve

Steve, does the EngineCheck Pro software, cover all Vauxhauls? I was told that I would need to use the Vauxcheck software with the Omega when I asked.

2001 onwards they say yes (it does not work on my Saloon which is older) - it certainly has worked ok since I've had it. I'm just not convinced by what it is telling me and I don't have any past live data to use for comparison.

Fingers cross someone will and can advise further......

[Andy A]

Gendan EngineCheck Pro with ELM327 v1.4b USB interface.

That is a freeze frame which I think it takes from the ECU? (although clearly the reader could screw it up in the process). When I get home I can grab some live data and post, certainly the MAF does not show 0 there.

Or are we just saying my reader is giving me rubbish? 

Steve

Steve, does the EngineCheck Pro software, cover all Vauxhauls? I was told that I would need to use the Vauxcheck software with the Omega when I asked.

2001 onwards they say yes (it does not work on my Saloon which is older) - it certainly has worked ok since I've had it. I'm just not convinced by what it is telling me and I don't have any past live data to use for comparison.

Fingers cross someone will and can advise further......

Lets hope so Steve. Good luck with it.

[steve6367]

Thank you the MOT is getting a little close now!

 

[steve6367]

Well whole new exhaust and another post CAT Lambda and it passed the MOT 

Does the below help at all?