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[Albatross]

Cheers buddy, I just tried to call you

[TheBoy]

Cheers buddy, I just tried to call you

Opps, sorry, tidying up the garage....  ....I'm in though.

[TheBoy]

OK, I fixed the front multiram, but as far as I can see, the lamdas look fine, fuel trim looks plausible....

If anyone else with TIS care to take a peek at the snapshot?

http://theboy.omegaowners.com/tech2snapshots/ALBATROSS.SUR

[Albatross]

Thanks TB; pleasure as always.

Nathan

[Jimbob]

OK, I fixed the front multiram, but as far as I can see, the lamdas look fine, fuel trim looks plausible....

If anyone else with TIS care to take a peek at the snapshot?

http://theboy.omegaowners.com/tech2snapshots/ALBATROSS.SUR

and for anyone who has never tried before, put the snapshot file in

c:\program files\cosids\data\snapshot  

[Marks DTM Calib]

Could do with a capture triggered off the fault code really....

Heres the graph anyway which looks ok (will analyse it further later when I have more time)

[TheBoy]

Could do with a capture triggered off the fault code really....

Heres the graph anyway which looks ok (will analyse it further later when I have more time)

I couldn't get it to reproduce the fault.  Albatross doesn't know when it happens either, due to a blown EML!  (I didn't have a spare, else I would have fixed that)

[Albatross]

That graph looks great, but what software would I need to be able to read the file and turn it into a graph.

And what does the graph actually mean?

[TheBoy]

That graph looks great, but what software would I need to be able to read the file and turn it into a graph.

And what does the graph actually mean?

TIS is the software, and the graph means - to my eyes - that it all looks OK  :-/

[Kevin Wood]

That graph looks great, but what software would I need to be able to read the file and turn it into a graph.

And what does the graph actually mean?

TIS is the software, and the graph means - to my eyes - that it all looks OK  :-/

I'm guessing the fault is intermittent or only occurs during a certain engine operating condition, which wasn't reproduced during that test.

I would say take it for a test drive logging the short and long term fuel trims. I'm guessing there's a set of circumstances where these are getting out of limits and knowing the circumstances (high / low inlet vacuum, high / low fuel demand, One bank / both banks together etc.) would be a useful pointer.

Kevin

[TheBoy]

That graph looks great, but what software would I need to be able to read the file and turn it into a graph.

And what does the graph actually mean?

TIS is the software, and the graph means - to my eyes - that it all looks OK  :-/

I'm guessing the fault is intermittent or only occurs during a certain engine operating condition, which wasn't reproduced during that test.

I would say take it for a test drive logging the short and long term fuel trims. I'm guessing there's a set of circumstances where these are getting out of limits and knowing the circumstances (high / low inlet vacuum, high / low fuel demand, One bank / both banks together etc.) would be a useful pointer.

Kevin

Agreed, though handy to put bulb back in to see how often it does it.

Tech2, oddly, isn't ideal for long distance live data check, due to length of its connector, and location of Omega diags port. Also, quality of diags port not great, so occasional disconnections as well.

[Kevin Wood]

Tech2, oddly, isn't ideal for long distance live data check, due to length of its connector, and location of Omega diags port. Also, quality of diags port not great, so occasional disconnections as well.

I keep meaning to knock up a program to do this with my ELM lead so I can figure out what's going on with the post-cat lambdas.

Kevin

[TheBoy]

Tech2, oddly, isn't ideal for long distance live data check, due to length of its connector, and location of Omega diags port. Also, quality of diags port not great, so occasional disconnections as well.

I keep meaning to knock up a program to do this with my ELM lead so I can figure out what's going on with the post-cat lambdas.

Kevin

I may be able to help with Tech2 when you get back from hols, if you just need to check the lamdas for a week or 2

Obviously, I may need a couple of favours in return, one you know about, one you don't  

[Albatross]

Thanks blokes.

What is my best next course of action? (apart from the EML bulb)

[Albatross]

Right; post rejuvenation:

TB helped me to clear the codes and replace the EML bulb this morning and then Kevin Wood just popped round with a Tech2 this afternoon.

I had some "Intermittent Trim" (0170 & 0173) codes in the 45 mile run home from Jaime's, but the EML light hadn't been triggered.

On a run we checked the live feed with the Tech2 and Kevin Wood. My immediate trims seemed to be running in balance accross either side of the engine at around the 7 - 10% rich i.e. having to compensate by putting extra fuel through. The "long term" trims were up by 24% on both sides.

This seems to be the engine feeling the need to pump more fuel in than the normal trim level.

Possible diagnosis:

Too much air:

• Air leak (as this is consistent from side to side it would need to be quite close to the plenum)
• Better flow through the new stainless free flow exhaust

Not enough fuel:

• Dirty injectors (I'll try some cleaner fliud in the fuel, but I am quite frequent with this)
• Low fuel pressure (I'll get this checked at a garage)

Kevin and I realised that it could be that the free flow exhaust is giving improved air flow and therefore the 3-bar air flow regulator might simply not be man anough to keep with the improved air flow up as standard. Taking that further we felt that it might be worth (after checking for air leaks and cleaning the injectors) that it might be worthwhile considering a 4-bar fuel pressure guage to up the pressure in line with the increased air flow created by the upgraded exhaust.

Car is running like a dream though.

I'll keep the post posted as it were.

Once again, many thanks again to Jaime and Kevin for your help today; much appreciated.