Running rich... Help please

[-pseudonymous-]

Ive logged block 032 on Vag-Com and i'm getting readings of -1.6 additive trim in the first column and -9.6 multiplicative trim in the second column.

I've checked all over for boost leaks but cant find anything.

What else could be causing my car to run rich? Could the 02 sensor be faulty? Is there a way of finding out through Vag-Com? Any other blocks i could try logging?

Hope somebody with some vag-com/fueling knowledge can help me....

Edit: forgot to say im running Revo Stage 2 4bar with all the mods on a ko3s.

Thanks. Ollie

 

[Forbez]

I'd say, as its running rich, your on the right track with a boost leak. Whats the maf (002) giving on tickover, it maybe idle should be low, around 10g/s iirc.

I'm sure someone else will be able to actually help you soon.

 

[PhilW]

Your tryin to log a lambda thats narrowband. Have you got any rich fault codes?

log 002 and see what the A/F is like using the Ross Tech calculator. Daz_gibbo has done it so search for his thread.

 

[-pseudonymous-]

I'd say, as its running rich, your on the right track with a boost leak. Whats the maf (002) giving on tickover, it maybe idle should be low, around 10g/s iirc.

I'm sure someone else will be able to actually help you soon.

The MAF's reading around 3.40 - 3.60 g/s on tickover at 840 rpm and around 160g/s at peak.

I hope somebody can help me. The car feels a little sluggish lately and im worried im going to damage my cat with it running too rich!

 

[-pseudonymous-]

Your tryin to log a lambda thats narrowband. Have you got any rich fault codes?

log 002 and see what the A/F is like using the Ross Tech calculator. Daz_gibbo has done it so search for his thread.

RPM	Load %	A/F ratio
2160	102.3	16.15
2320	115	16.14
2400	125.6	15.75
2560	136.8	14.77
2720	145.1	14.22
2880	157.1	13.92
3000	168.4	14.11
3200	174.4	13.96
3360	175.9	13.86
3560	175.9	13.81
3720	174.4	13.56
3880	172.9	13.54
4080	172.9	13.56
4240	171.4	13.22
4400	171.4	13.20
4640	169.2	13.13
4680	169.9	13.14
4840	167.7	12.98
5000	166.2	13.19
5120	162.4	13.48
5280	158.6	13.12
5400	155.6	13.28
5520	151.9	13.24
5640	148.1	13.37
5760	145.1	13.16
5840	143.6	13.12
5960	139.1	12.97
6040	137.6	13.28
6160	136.8	13.36
6240	135.3	13.32

Right I think this is what you meant Phil? Copy and pasted my MAF results to the A/F calculator thing on the Ross-Tech website.

How does it look to you?

 

[Forbez]

Ollie, are you getting any fault codes?

 

[PhilW]

Rich. lol.

Check for vac leaks and log 118 to see what your WG% is like.

 

[-pseudonymous-]

No Tom no fault codes as of yet. Just within the correction limits of the ECU before it throws a fault i think.

Phil i've checked for leaks but had no luck in finding any. As its running rich at WOT wouldn't that suggest there is a boost leak rather than a vac leak?

Here is a log from tonight with settings at Boost 8 Timing 8. Still seeing less peak boost than i would have liked aswell. What are your thoughts.... Pointing towards a leak?

'115				Group B:	'118			
RPM	Load	Absolute Pres.	Absolute Pres.		RPM	Temperature	Load	Absolute Pres.
				TIME				
 /min	%	 mbar	 mbar	STAMP	 /min	°C	%	 mbar
1960	100	1950	1350	0.29	1920	15	100	1260
2160	123.3	2030	1560	0.89	2040	15	100	1440
2360	144.4	2090	1840	1.49	2240	15	100	1700
2600	163.2	2130	2110	2.09	2480	14	96.5	1990
2880	172.9	2150	2320	2.69	2800	14	84.3	2240
3200	169.9	2170	2220	3.29	3040	14	83.1	2240
3440	172.9	2150	2230	3.89	3280	14	83.5	2220
3760	172.9	2150	2210	4.5	3600	15	83.5	2210
4000	176.7	2160	2210	5.1	3880	15	83.1	2210
4280	172.9	2120	2170	5.7	4160	15	83.1	2180
4520	171.4	2100	2110	6.3	4400	16	83.1	2140
4800	167.7	2080	2040	6.89	4680	17	82.7	2080
5000	165.4	2060	2000	7.5	4880	18	83.1	2020
5280	159.4	2010	1980	8.09	5080	18	83.9	2000
5440	155.6	2000	1970	8.7	5360	19	84.7	1980
5600	151.9	1980	1920	9.3	5560	20	85.9	1940
5800	148.9	1960	1880	9.9	5800	21	88.2	1900
5920	146.6	1940	1840	10.5	5840	21	91.8	1870
6120	142.9	1900	1820	11.1	6000	22	100	1830
6200	141.4	1880	1810	11.7	6120	23	100	1820
6360	139.8	1860	1800	12.3	6320	24	100	1810

 

[Forbez]

Out of my remit now! Hope you can sort it mate, i'll keep an eye though, to learn, at least.

 

[-pseudonymous-]

Out of my remit now! Hope you can sort it mate, i'll keep an eye though, to learn, at least.

lol cheers matey. Im sure some bright spark will be able to help me out! Cars eh... who'd have em!

 

[Forbez]

LOL Aye!!

 

[-pseudonymous-]

Anybody help?

Could it be a faulty o2 lambda sensor? Or even the stage 2 revo as its never been right since the upgrade.

Any other suggestions....

 

[Daz_gibbo]

RPM	Load %	A/F ratio
1880	49.6	14.11
1960	56.4	15.32
2040	73.7	16.62
2080	75.2	17.87
2160	62.4	14.23
2240	54.9	14.32
2280	55.6	14.74
2360	54.9	15.48
2400	55.6	14.84
2480	82.7	14.54
2600	109	15.55
2800	136.1	14.18
3000	160.9	13.55
3360	182.7	12.79
3680	182	12.56
3960	181.2	12.38
4240	175.2	12.17
4480	169.2	12.40
4720	163.9	12.32
4880	159.4	12.46
5160	154.1	12.51
5320	148.9	12.36
5480	143.6	12.19
5680	139.8	12.14
5800	136.8	12.51
5960	134.6	12.46
6080	132.3	12.46
6240	129.3	13.05

Thats mine as a comparison. Same mods so it does look slightly rich, boost is also a tad low

 

[-pseudonymous-]

Cheers daz. So i should be seeing A/F ratio in the 12's ideally then?

Just need to find out why its running so rich now! MAF's reading 166g/s so not particularly low. Is there a way of finding out through Vag-Com if the o2 sensor is faulty?

 

[Daz_gibbo]

Should be able to see voltage feedback in certains blocks using VAGCOM. That should be able to point you to a dodgy sensor?
Not sure of what values to look for though. Might be worth finding out.

 

[PhilW]

I'm with Daz, find out which block is for your lambda, see if its cycling between 0 and 1 etc... which will tell you its pretty much working.

In the mean time, check all your pipes, including ones which come off the inlet manifold, brake servo line, PCV etc... which people always miss.

 

[-pseudonymous-]

Ok will have another butchers tomorrow lads. Ta very muchly for your help!

 

[nogutsnoglory]

All those numbers confuse the hell out of me lol, hope you get it sorted mate

 

[Forbez]

Don't know if this is of anyhelp to you mate:
http://uk-mkivs.net/forums/thread/839842.aspx

 

[ibizacupra]

RPM	Load %	A/F ratio
2160	102.3	16.15
2320	115	16.14
2400	125.6	15.75
2560	136.8	14.77
2720	145.1	14.22
2880	157.1	13.92
3000	168.4	14.11
3200	174.4	13.96
3360	175.9	13.86
3560	175.9	13.81
3720	174.4	13.56
3880	172.9	13.54
4080	172.9	13.56
4240	171.4	13.22
4400	171.4	13.20
4640	169.2	13.13
4680	169.9	13.14
4840	167.7	12.98
5000	166.2	13.19
5120	162.4	13.48
5280	158.6	13.12
5400	155.6	13.28
5520	151.9	13.24
5640	148.1	13.37
5760	145.1	13.16
5840	143.6	13.12
5960	139.1	12.97
6040	137.6	13.28
6160	136.8	13.36
6240	135.3	13.32

Right I think this is what you meant Phil? Copy and pasted my MAF results to the A/F calculator thing on the Ross-Tech website.

How does it look to you?

Thats not rich for under boost levels...
WOT is not using lambda control its load table related