Ongoing saga of Bank 1 - Lean

Forbez · Mar 27, 2007

Dont think so Phil, but hopefully will get the new DP fitted next week, so that should clear that issue, can also give the precat lambda a clean aswell then.

Coilpacks will swap from Cylinder 1 to 2 for example wont they?

sonic_vi · Mar 27, 2007

nah phil

at cross purposes mate

on about swapping the coil pack from cylinder 1 to 2 and see if the fault follows the coil pack or whether its something else

PhilW · Mar 27, 2007

Yeah bit have you actually had any error codes on any of the cylinder?

tompotts · Mar 28, 2007

Im confused, does bank one, mean 'pre cat' or 'cylinder one'?

Or sonic, are you saying that by swapping the coils you can trick the 'jobby' (sorry cant think) into thinking everything is right and thus find out if your bits dont work?

sonic_vi · Mar 28, 2007

ignore bank stuff

just look at which cylinder its on for this excercise

the banks are the injectors i think

Forbez · Mar 28, 2007

Error code back with Vengance, and same again, so it looks like the o2 Sensor is up the swanny!

Do you reckon giving the current one a clean would help, or would you suggest getting a new one.

sonic_vi · Mar 28, 2007

run some injector cleaner through

could be a bit of crap built up thats impeding fuel flow.

worth a try for the cost of a bottle

tompotts · Mar 28, 2007

Forbez, its well worth a try, I had the same in thing on mine after fixing a leaky hose. Filled her up with some injector cleaner and a tank of optimax, after quarter of a tank i plugged her in and cleared the code. It hasnt come back yet (touch wood). That was yesterday.

Forbez · Mar 28, 2007

Any reccomendations??

Forbez · Mar 28, 2007

Actually i only use V power / Optimax, and if desperate BP Ultima, so is the injector cleaner really needed?

PhilW · Mar 28, 2007

As you havent got any fault codes on your coilpacks tom, and it still runs, you can rule out a duff coilpack. They very rarely 'under perform', they just die, and you know about it.

Chuck in some injector cleaner, it wont do any harm, but i doubt that is the cause of your problems.

Either your MAP sensor, MAF or first lambda sensor is stuffed i reckon.

I reckon you need a new lambda.

Forbez · Mar 29, 2007

Yeah thats what i was thinking Phil, coilpacks are ok.

Maf is pulling good results, Map sensor seems ok, i've given it a clean, so i reckon its probably the Lambda aswell!

I'll swap it with the DP swap.

tompotts · Mar 29, 2007

Tom,

the error code hasnt come back on mine, since I filled her with injector cleaner. For the price of a bottle of cleaner and a tank of fuel its worth trying before you replace your pre cat lambda.

Forbez · Mar 29, 2007

I'll pick some up then.

tompotts · Mar 30, 2007

Came flying down the slip road last night to find a queue of stationary traffic, hit the brakes, stopped nicely and then the light came back! Got home, plugged her in, same code, cleared it, and the codes stayed gone.

Im guessing this because of the sudden change in Rpm, I went from around 6k to stopped in a couple of seconds. Anybody know if Im right, or is there a problem that needs looking at.

Let us know how you get on Forbez

Forbez · Jul 5, 2007

Grrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr

Swapped the DP for a miltek DP, swapped the Pre Cat lambda, and its still here, will try unplugging the MAF later to see how it performs.

Hope its not another ****ing MAF,

I have swapped the N75, Pre Cat Lambda, plugs are only a few thousand miles old, and patience is running at a low!

stren · Jul 8, 2007

bank 1 lean

did u check the ruber hose under the intake manufold that goes to the breather hose this usualy causes this code(bank 1 intermitant lean)

stren · Jul 8, 2007

bank 1

bank 1 is the lamda before the cat bank 2 is after the cat

Forbez · Jul 9, 2007

Aint checked that hose mate, will have a look though, not 100% which hose your refering too though.

Here's some logs, sorry for the short bursts, but i did try to get full runs in, but it was during traffic, will get some more when i can,

Code:

Monday	9	July	2007	15:51:06									
6K0 906 032 AA 		1.8L 20VT EU3       0002											
													
	Group A:	'003				Group B:	'115				Group C:	 Not Running	
		RPM	Mass Flow	Load	Ign. Timing		RPM	Load	Absolute Pres.	Absolute Pres.			
	TIME					TIME					TIME		
MARKER	STAMP	 /min	 g/s	%	 °BTDC	STAMP	 /min	%	 mbar	 mbar	STAMP		
	1.32	3520	100.06	100	12	0.79	3280	134.6	1720	1670			
	2.32	3920	110.89	100	13.5	1.84	3720	148.1	1890	1870			
	3.35	4280	117.28	100	14.3	2.83	4080	145.9	1830	1810			
	4.34	4680	139.44	100	11.3	3.83	4480	147.4	1860	1800			
	5.34	5040	145.67	100	10.5	4.83	4840	153.4	1840	1860			
	6.33	5320	147.36	100	12	5.83	5160	148.1	1800	1800			
	7.34	5600	144.36	100	13.5	6.83	5480	140.6	1680	1750			
	8.53	5840	144.86	100	18.8	7.91	5720	132.3	1630	1650			
	9.53	6080	146.64	100	17.3	9.05	5960	127.1	1570	1590			
	10.54	5800	0	4.3	15	10.03	6160	124.8	1570	1570			
	11.53	4920	136.64	100	15	11.02	4840	113.5	1630	1230			
	12.53	5080	141.5	100	15	12.04	5000	145.1	1770	1760			
	13.54	4760	13.22	2.7	13.5	13.03	5160	143.6	1730	1760			
	14.52	3240	3.17	3.1	13.5	14.03	3960	11.3	990	1100			
	15.53	3200	4.78	3.5	13.5	15.02	3080	6	990	1020			
	85.58	2800	67.06	100	12.8	86.08	2960	129.3	1640	1660			
	86.59	3080	78.19	100	12.8	87.08	3240	132.3	1650	1680			
	87.65	3400	85.94	100	11.3	88.28	3560	132.3	1680	1680			
	88.78	3720	96.19	100	14.3	89.29	3880	133.1	1710	1670			
	89.79	4000	105.08	100	16.5	90.29	4160	133.1	1690	1650			
	90.8	4280	108.47	100	16.5	91.29	4400	133.1	1690	1650			
	91.79	4520	115.44	100	17.3	92.3	4680	135.3	1680	1640			
	92.79	4800	123.64	100	16.5	93.29	4920	136.8	1690	1640			
	93.79	5040	131.72	100	13.5	94.29	5160	134.6	1660	1630			
	94.8	5280	133.5	100	15	95.38	5400	129.3	1580	1610			
	95.97	5480	133.56	99.6	18.8	96.5	5600	123.3	1510	1550			
	96.99	5360	3.11	3.5	14.3	97.49	4400	11.3	1000	1130			
	97.98	3680	4.69	3.1	13.5	98.49	4080	6	1000	1030			
	98.99	4120	5.86	4.3	13.5	99.48	4040	7.5	1000	1020			
	369.04	2760	71.89	100	10.5	368.55	2560	130.8	1700	1660			
	370.06	3120	77.92	100	13.5	369.54	2920	133.1	1650	1740			
	371.04	3480	101.83	100	12	370.56	3280	134.6	1780	1700			
	372.06	3880	111.47	100	10.5	371.54	3680	150.4	1890	1930			
	373.05	4320	135.56	100	9	372.55	4080	163.2	2080	1990			
	374.27	4720	146.75	100	9	373.66	4520	163.2	2030	2030			
	375.35	5120	155.28	100	9	374.85	5000	157.9	2040	1930			
	376.36	5400	154.72	100	8.3	375.85	5280	151.9	1930	1890			
	377.35	5240	2.44	3.1	11.3	376.85	5560	144.4	1840	1850			
	378.34	4240	12.67	6.7	9.8	377.85	4320	85	1400	1190

stren · Jul 9, 2007

bank 1 lean

http://monty.syr.edu/vw/20vforum/AWWAWPVacDiag.JPG u can see the pipe here it comes from the intake manifold to the breather system(its shorter than in the pic) i have changed many of these bacause fo thos fault code.

Ongoing saga of Bank 1 - Lean

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