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[Entwood]

2000 rpm

Fuelsys1           CL
Fuelsys2           CL
LoadPCT(%)      5.9
ETC                  89
SHRTFT1%       11.7 to 13.3  (total range about 1 second steps)
LONGFT1           3.1
SHRTFT2          7.8 to 12.5  (1 sec steps)
LONGFT2           3.1
RPM                  2166
VSS                      0
ADV                  22
IAT                   27
MAF                 7.25 to 7.75 (1 sec steps)
TP%                3.9
O2B1S1           0.080 to 0.735   (1/2 sec steps)
SHRTFTB1S1    10.2 to 13.3          (1/2 sec steps)
O2B1S2           0.350 to 0.635    (1/2 sec steps)
O2B2S1           0.070 to 0.735     (1/2 sec steps)
SHRTFTB2S1    7.0 to 8.6          (1/2 sec steps)
O2B2S2           0.185 to 0.215     (1/2 sec steps)

Again the only major difference is B1 / B2 on the last 6 readings

[tunnie]

Going just by idle, looks like lazy Lamba to me, on Bank1, Sensor2, Bank2 sensor 2 does not look like it moves much either

O2B1S2           0.720 to 0.745    (1/2 sec steps)

Yet at 2k rpm it looks more active 

[Entwood]

4000 rpm

Fuelsys1           CL
Fuelsys2           CL
LoadPCT(%)      12.0
ETC                  96
SHRTFT1%       9.4 to 15.6  (total range about 1 second steps)
LONGFT1           3.1
SHRTFT2          7.00 to 12.5  (1 sec steps)
LONGFT2           3.1
RPM                 3837
VSS                      0
ADV                 36
IAT                  34
MAF                12.25
TP%               6.7
O2B1S1           0.305 to 0.735   (1/2 sec steps)
SHRTFTB1S1    10.9 to 14.1          (1/2 sec steps)
O2B1S2           0.125 to 0.635    (1/2 sec steps)
O2B2S1           0.100 to 0.705     (1/2 sec steps)
SHRTFTB2S1    10.9 to 16.4         (1/2 sec steps)
O2B2S2           0.335 to 0.585     (1/2 sec steps)

Similar results as before.although I've just noticed that there seems to be a divergence in the SHRTFT1% and SHRTFT2% at the top of the lists as well.

When I left the car was running well an sounding good, although we couldn't take it down the road due to Paul actually having to work !!! His absence might have been noticed !!

Anyone any ideas on those figures ??  I strikes me, in hindsight, that I should have done a set of figures BEFORE resetting the codes .. but 'tis too late now ...

I had a good look around and a listen, no signs of airleaks.

Over to the experts

[aaronjb]

IIRC the two 'S2's should be fairly lazy and largely lean (which they are) as they're the post CAT sensors, the two 'S1's should be flipping between rich & lean often (voltages indicate they are, but a graph is the only real way of seeing it, or an excel spreadsheet of values).

The short term fuel trims look enormous to me, though - it's having to add a lot of fuel to what it thinks it should need in order to reach stoic..

Lazy MAF or a post MAF air leak (letting in unmetered air) would be my best guess..

[bigpaul]

she appears to be running fine so far just locked up the place so moved the car but not exactly what you can call a run   see if anything occurs on the way home

certainly no sign as of yet of the warning light re-appearing but then i guess its too early for that.

Is it worth mentioning her mis-fire after she was first started after the re-set is this usual ?

At this point I would like to say how much I appreciate your help you went out of your way to come to me and help put things right even leaving me with a decoder and clear concise idiot instructions

All you got was a lousy cup of coffee, seriously it was really appreciated and great to me you

[Entwood]

Not a problem Paul ...

As a further thought .. in conversation in came out that the car usually only does a trip of about 4 miles each time ... so probably not getting fully up to temperature ... would this make a difference to Fuel Trim  

[tunnie]

Not a problem Paul ...

As a further thought .. in conversation in came out that the car usually only does a trip of about 4 miles each time ... so probably not getting fully up to temperature ... would this make a difference to Fuel Trim  

A good 150 mile or so italian tune up could sort things!

[bigpaul]

yeah now a motorway thrash was discussed

is this the way forward ?

[tunnie]

If its only used 4 miles at a time max, I would suggest it.

Short run like that is not really long enough, I drove into office today, but only because I'm going out afterwards, 4 miles barley enough time for it to get hot.

I'd pick a route that has long motorway blast with some twisties, get that rev needle moving 

[tunnie]

Also do you use supermarket fuel?

[bigpaul]

usually fill up at Asda wool mart last couple times have been local garage

[tunnie]

Try a tank of BP/Shell fuel with your tune up run 

[bigpaul]

ok i tend to use regular cos of prices is that also a problem ?

[Andy H]

Given the random misfire codes and nothing more concrete I would consider throwing in a set of new spark plugs if it was my car.

The odd fuel trims might well be a symptom of poor ignition, not the cause.

[bigpaul]

As i am stuck at work again gave the job of a little test run to my son

Covered approx 60 miles at high speed obviously with the legal limits 

He has just returned and reports she ran like a dream no problems at all and no sign of light as of yet.

I have concerns over the misfires as there has never been any indication of this other than on the reset yesterday

She started perfectly this morning from cold as always happy to try the plugs if you think this will help ?