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Model specific boards => Golf mk4 => Topic started by: jnufcuk on 12 July 2011, 15:51

Title: Engine light after installing 007p
Post by: jnufcuk on 12 July 2011, 15:51: Hi all the engine light came on when i was driving the other day. I thought it meant it was due a service? I have replaced, pollen filter, oil etc so would i be right in thinking i should just clear it as i only have the 17705 code iirc (the one that everyone gets :wink:)

The car is running fine but the same thing happened on my old 2.0 and it tied in with the service ??

thanks :afro:
Title: Re: Engine light after installing 007p
Post by: Ant1981 on 12 July 2011, 16:01: Usually a seperate warning for service, the orange engine light is probably your code.
Title: Re: Engine light after installing 007p
Post by: daz veedub on 12 July 2011, 17:22: yep the word SERVICE and a beep should appear on dash no other lights
Title: Re: Engine light after installing 007p
Post by: jnufcuk on 12 July 2011, 17:25: Just scanned it again and got 17544?

(http://i1209.photobucket.com/albums/cc382/jnufcuk/72ea97d3.jpg)
Title: Re: Engine light after installing 007p
Post by: Rhyso on 12 July 2011, 17:26: http://wiki.ross-tech.com/wiki/index.php/17544/P1136/004406
Title: Re: Engine light after installing 007p
Post by: RTechUK on 12 July 2011, 17:34: Quote from: jnufcuk on 12 July 2011, 17:25
Just scanned it again and got 17544?

(http://i1209.photobucket.com/albums/cc382/jnufcuk/72ea97d3.jpg)

17544 - Fuel Trim: Bank 1 (Add): System too Lean

This means while the car it on idel the fuel system is running lean, the fuel will be running open loop from the maf readings and being trimmed by the closed loop system of the lambda sensor, which means you have a air leak of some kine somewhere.

If you can check blocks 32 you can see how bad in is in a %.
Title: Re: Engine light after installing 007p
Post by: jnufcuk on 12 July 2011, 17:35: Cheers ryhso do you think it could be because of this split hose?

http://www.golfgtiforum.co.uk/index.php?topic=199562.0

I've taped it up but need to buy some new ones maybe that Might fix it? Can I delete the light by any chnance or is it betterto keep it on?
Title: Re: Engine light after installing 007p
Post by: jnufcuk on 12 July 2011, 17:58: Cheers rtech, I did have a split hose I posted the link above. :smiley: I only have a cheap £20 code reader so whatdo you Mean by block 32? :undecided:

Cheers guys
Title: Re: Engine light after installing 007p
Post by: Ant1981 on 12 July 2011, 20:20: I've got a shareware version of VAG COM, can that read blocks?
Title: Re: Engine light after installing 007p
Post by: RTechUK on 12 July 2011, 20:25: Quote from: jnufcuk on 12 July 2011, 17:58
Cheers rtech, I did have a split hose I posted the link above. :smiley: I only have a cheap £20 code reader so whatdo you Mean by block 32? :undecided:

Cheers guys

Yer that can cause the add fuel trim fault code. Catch can mod needed me thinks :-)
Title: Re: Engine light after installing 007p
Post by: AaronGS on 12 July 2011, 20:31: Can a catch can vented to atmosphere cause an air leak o be detected/ cause slight running lean? (Sorry to hi-jack)
Title: Re: Engine light after installing 007p
Post by: RTechUK on 12 July 2011, 20:47: Quote from: AaronGS on 12 July 2011, 20:31
Can a catch can vented to atmosphere cause an air leak o be detected/ cause slight running lean? (Sorry to hi-jack)

Blank the hole on the tip and it will be perfect, as long at the ecu knows the correct amount of air entering the manifold tract it's fine, its air drawn post maf which causes the issues with fuel trims. Just disconnect one of the small vacume pipes and see how much a 1.5mm id hole effects the air fuel ratios.
Title: Re: Engine light after installing 007p
Post by: AaronGS on 12 July 2011, 20:54: thanks r-tech. so could a exhaust mani/turbo gasket leak cause fuel trim issues?
Title: Re: Engine light after installing 007p
Post by: RTechUK on 12 July 2011, 21:21: Quote from: AaronGS on 12 July 2011, 20:54
thanks r-tech. so could a exhaust mani/turbo gasket leak cause fuel trim issues?

110% it will cause fuel trim issues, 02 readings will be all over the place, on idle the leak can draw air in to the exhaust and underload the oxygen will push out the gap which means the o2 sensor will have different lambda reading compared what is actually going on in the combustion chamber.
Title: Re: Engine light after installing 007p
Post by: jnufcuk on 12 July 2011, 21:26: Quote from: RTechUK on 12 July 2011, 20:25
Quote from: jnufcuk on 12 July 2011, 17:58
Cheers rtech, I did have a split hose I posted the link above. :smiley: I only have a cheap £20 code reader so whatdo you Mean by block 32? :undecided:

Cheers guys

Yer that can cause the add fuel trim fault code. Catch can mod needed me thinks :-)

Ant1981 and a couple others suggested that. Had a look and I'm still not entirely sure I know what it does? What's the advantage of having one over the hoses? And is it an easy to do lol.

My list of things to do is getting longer and longer by the week :smiley: I just want it running perfect so I can get the bloody thing remapped by u guys lol.
Title: Re: Engine light after installing 007p
Post by: RTechUK on 12 July 2011, 21:29: This is something that we can sort during a remapping session, we have loads of used pipes in stock
Title: Re: Engine light after installing 007p
Post by: jnufcuk on 15 July 2011, 16:02: Quote from: RTechUK on 12 July 2011, 21:29
This is something that we can sort during a remapping session, we have loads of used pipes in stock

right cheers nick. Im going to buy some new hoses on ebay and get them out on then im going to sort out my bushes and a couple of small leaks i got. The next step i was looking at going with a 3" downpipe and sports cat? Would remapping before or after downpipe and cat make any differnece? Would i be abel to get it remaopped then add the cat etc or is it best to get the cat etc first?

Sorry for all the questions just want to tap into your vast amount of knowledge on mk4s :afro: :cool: