GolfGTIforum.co.uk

General => General discussion => Topic started by: benvictors on 22 January 2012, 18:39

Title: 2002 V6 Auto
Post by: benvictors on 22 January 2012, 18:39

Its a T4  :wink:
Had the van about 2 weeks now and its been drinking fuel for fun, about 9mpg!!!!
Put it on Vag-com and got this lot up
4 Faults Found:

16825 - EVAP Emission Control Sys: Incorrect Flow

        P0441 - 35-10 - - - Intermittent

17704 - Shareware Version. To Decode all DTCs

        P1296 - 35-10 - Please Register/Activate - Intermittent

16497 - Shareware Version. To Decode all DTCs

        P0113 - 35-10 - Please Register/Activate - Intermittent

16486 - Mass Air Flow Sensor (G70): Signal too Low

        P0102 - 35-00 - -
Had a clean down of the engine, a few of the breathers were clogged with oil and the mass airflow sensor had a load of sh!t in it, put it all back together, cleared the codes and went for a drive, put it back on vag-com and got this

1 Fault Found:

17559 - Long Term Fuel Trim Additive Air Bank 1: Range 1: System too Lean

        P1151 - 35-00 - -

Any ideas people??
Any help much appreciated.

Also, the auto gearbox seems to skip between 2rd and 3rd alot, gives a bit of a kangaroo effect and it sticks in gear a little longer than I think it should.
Any help on this also much appreciated.
Cheers.

Title: Re: 2002 V6 Auto
Post by: F17BAD on 22 January 2012, 18:57

mate join club GTI and post this up

Title: Re: 2002 V6 Auto
Post by: AudiA8Quattro on 22 January 2012, 20:37

The MAF looks a good place to start, if wiring is ok, probably worth trying a new sensor.
As for the auto box, when was it last serviced? change the oil and filter for starters.

Title: Re: 2002 V6 Auto
Post by: tshirt2k on 22 January 2012, 20:38

Get a proper Vag com too with a newer motor. Let me know if you need one.  :wink:

Title: Re: 2002 V6 Auto
Post by: tshirt2k on 22 January 2012, 20:40

Think air temp is part of MAF, so best to start there

Title: Re: 2002 V6 Auto
Post by: benvictors on 22 January 2012, 21:22

Cheers guys, gonna order the bits for the gearbox service, the vans got full service history but since the auto boxes have lifetime oil in them  :rolleyes: I doubt its been done.
All the codes have cleared and stayed off aside from the last one, 17559
According to Ross-Tech, could pretty much be owt ha ha

Possible Causes
Intake System faulty/leaking
Fuel Pressure, Fuel Pressure Regulator and Fuel Pump faulty
Fuel Injectors faulty/leaking
Exhaust System faulty/leaking
Activated-Charcoal Filter/System faulty/leaking
Secondary Air Injection System faulty/leaking
Lambda/Oxygen Sensor(s) before Catalytic Converter faulty
Lambda/Oxygen Sensor(s) after Catalytic Converter faulty

The Readiness option on Vag-com comes up with a lot of sh!t to thats im a little concerned about
(http://i282.photobucket.com/albums/kk250/djbenvictors/Picture001-2.jpg)

Bit of a Vag-co novice so help appreciated............ Russ :wink:

Title: Re: 2002 V6 Auto
Post by: tshirt2k on 22 January 2012, 22:10

Just means ecu thinks engines running lean so is dumping in fuel to compensate. You need to find the reason. Possibly a new MAF, but you can test Coolant sensor if you have a meter.

Title: Re: 2002 V6 Auto
Post by: F17BAD on 22 January 2012, 23:25

I can get a meter

Title: Re: 2002 V6 Auto
Post by: danny_p on 23 January 2012, 19:57

evap emissions can be ignored for the moment.
2ndry air injectoin that can also be ignored ( if it even has it )

it's hinting quite heavly that the lambda has gone down.

also faulty maf will kill economy so you want to change that as well.

MAF's and lambdas can almost be regarded as service items often due at around cambelt time on a lot o engines 60-80k miles and there about all done

as for the auto box they someimes like a fluid change that often makes them play ball again

Title: Re: 2002 V6 Auto
Post by: tshirt2k on 23 January 2012, 20:53

^^ Lambdas age. I think i remember reading that they should be changed around 40K.

Title: Re: 2002 V6 Auto
Post by: benvictors on 23 January 2012, 21:15

Cheers Danny, think the MAF is ok now, after cleaning it out and re-installing it hasn't come back up on Vag-Com and the van is running pretty good. Think I will change the Lambda tho, its still using a lot of fuel, I know the Van is a lot heavier than my VR and it has an extra 12 valves, but if I can get 50-55 miles from a tenner of fuel, then surely I should be able to get 35-40 from the van?!?!  :undecided:
What do you mk4 V6 boys/girls get mpg wise??
Just changed the coding on the Auto box for economy mode too, see if this makes a difference.

Title: Re: 2002 V6 Auto
Post by: benvictors on 23 January 2012, 21:20

Also, am I likely to have pre and post Lambda's? I will have a look tomorrow to be sure but arsed going out now for a look  :grin:

Title: Re: 2002 V6 Auto
Post by: danny_p on 23 January 2012, 21:59

2002 your likey to have both TBH

the first one is the more expensive as its quite likely to be a wideband , if it is it's even more inportant that its functioning correctly as the ecu monitors it closely under all driveing conditions and uses it to trim fueling accordingly,  also any exhaust leack upstream of it will reack havock with drivablity/ power and economy. 

the 2nd lambda is used but is no where near as inportant it's more there just to monitor things and keep a check on the cat, bounus is the 2ndry lamda will be a narrowband  and cheeper

Title: Re: 2002 V6 Auto
Post by: tshirt2k on 23 January 2012, 23:00

If you're getting a new lambda sensor. Try lambdapower. Good service and prices.

Title: Re: 2002 V6 Auto
Post by: benvictors on 23 January 2012, 23:26

Cheers Danny, Cheers Russ, I'll give em a try :cool: