Limp mode on 1.8T GTI

[skemp]

hi folks , please can someone help !!!!!!!!1

Im 35 years old and decided to purchase a golf gti 1.8 t with 48000  on it on a 52 plate to revist my youth lol , Iv owned 4 now of late . the 2.0 l gti whitch was a slow heavy waste of a gti badge , the 2.8 4 motion and the recently purchased 1.8 t aum engine one .

  got the car up north in newcastle and drove home back down south and she ran like a dream , wel until about 2 months ago when lights started coming on !!

  the epc light and the traction light comes on and sends into limp mode , this happens with no pattens , sometimes from cold ,damp , dry , wet , short journeys ect ,long ones aswel  and sometimes runs fine . When lights are on just in limp mode .When cold and reving up and down she has no brakes as the master cly not charging althow this has now been ruled out with a test
work done below

full servise
according to recipts and last owner 2 new throtle bodies
full coil change and plugs
full hose check for leeks
master break cyl check all fine /not charging due to engine running like sh!t
new rocker gasget /however not the cause ov
6 reads on fault code reader .

always trottle body comes up and cam sensor to top of now , also most days this is happening , could the cam sensor do this ??

 I am not putting another new trottle body on it at 420pounds ,The garage say that the cam sensor is a totaly diff job to the  fault .After reading the forums am I write in thinking that the epc light could be loads of things it could be

Has anyone had the exact same problem that can advise before I spend a fortune on this ??
When the car runs without lights on it runs like a dream.

  the car has not been chipped and is totaly standard

the garage are just saying trottle body but two already gone on it .Is thare different codes under throttle body that give reansons to what part or sensor it could be ??

hopefuly

steve 

[davemk4]

Sounds like maf sensor. Common. My aum was same  maf when faulty can give odd codes

Mine had epc abs lights on and ecu codes of lean mixture, and throttle body faukts which is why id assume TB been replaced on yours.

I disconnected maf and car ran no better so we bought a new VW maf and car runs spot on. All errors cleared and no limp mode

[beppe2672]

Yeah I would have said maf too, common fault on these cars. As for the brakes, you could have vac leak (lack of negative pressure affecting servo operation). My advice would be to buy a cheap vag com cable from eBay and post the logs on here.

[skemp]

cheers for the reply guys , so its a common fault on these is it ? i know i little bout cars but not enough to get stuck in , just cleaned the throtle body tonite and seems a bit better on tick over .when it got going lol

one thing i will ask you guys is i noticed when removing the throttle body pipes and the dump valve tonite a bit of oil in the pipe and a greasy feel to it and when cleaned it was same colour as oil , hang on who am i kidding it was a lean oil , not a lot but a bit ! couple of months ago i put a dump valve on and noticed the same when i put old one back on after the lights kept coming on , but was doing before i changed it so it wasnt that  ???is this normal ?

im thinking bout getting into vw main dealer and suffering the ouch if thay can fix , its such a mint car needs to be sorted as parting ways isnt realy an option just dont wanna keep guessing at parts .

what am i looking at a maf ? go for new or ebay it ?

steve

[dom]

It certainly sounds like it could be the MAF, have you scanned it for fault codes?

If you do decide on a new MAF then get a genuine one from VW, anywhere else and it will probably be a reconditioned unit and will fail again quickly.

Oil in the diverter valve is perfectly normal.

If you do feel the need to get a garage to look at it then don't go to VW for it, find yourself a VAG specialist instead.

[skemp]

hi yea throttle body been done twice according to prev owner , he seems  like a good guy and was very detailed bout car when selling it to me he was 56 years old so no he didnt realy wanna tune it up ect  ,he had done under warranty at nearly 700 pounds and iv got the receipt aswell  with coil packs and a few other jobs at same time and the one that came off aparently the garage said was new ish aswel ,i think hes sold it on due to this fault keep reoccurring , i no its a simple fix as car is mint with 48ooo full servise history from vw and lets face it thse dont come up often  as looked for nearly a year to get one .

can i fit the maf sensor myself  or i take it the trottle body will need to be reset after yea ,

also whats this cam sensor  all about my garage want 82 pound to supply a gen vw one and labour on top ? could this be the maf doing this or you guys reckon sep issue.

and you say oil in the dv is noemal what about the throttle body? and pipe leading in ?

the codes are always the same throttle body
cam sensor
and low turbo boost ?

il try and get exact codes to put on here soon

excuse me for the way im putting this to all off you , never used a forum before but desperate atm , havent got the pounds to chase problems !!! had a astra gte 16v years ago with same issues , spent 1800 pounds on replacing everything lol , sold it to a mate and it was a £6 fuel pump relay so im bitter lol

cheers guys   

[GTi_James]

i have the AUM as well, did some searching on this forum and cut out all issues with vacuum with replacing the PCV system with a catch can and cleaning out the TB as well, if your getting boost issues this would rule out half, a silicone TIP and N247 delete/bypass, carbon canister delete, new MAF, clean all your sensors, check coil pack recall, perhaps remove your SAI, dump valve replacement and a Boost Gauge not just for looks but to ensure that your car is operating properly

if im missing anything or am wrong let me know though, im still learning myself

[beppe2672]

Oil in the air lines is perfectly normal due to the design of the breather system, it releases oil vapor from the crankcase into the induction system, this can be cured by fitting a catch can and simplifying your PVC system, there's loads of how too's on here.

You cam position sensor isn't too tricky to do yourself and its defo a separate issue.

The maf is just 2 anti tamper torx screws, nice and simple.

As for your throttle body, I really can't see you going through 3. My golf is 13 years old and still on the original throttle body, albeit a cable one. There's got to be an underlying probelem there.

Post your vag com fault logs on here before you spend a lot of money mate! There's a lot of experienced guys on here!

[skemp]

evening guys , cheers for all your advise on friday nite .

so far this weekend no lights on on the dash but only been out a few times .
cleaned out throttle body friday nite and must say that small seaching below 100o revs has gone but was clean as a wisle with no build up of any thing atal and easy to c it was new not long ago !

did change the air filter with pattern one around the same time lights came on , cant play up surely can it guys ?

just a couple of things to ask .

1/ i take it the maf sensor is write next to air box top write of engine bay ?
2/the screws ie anti tamper one whare can i get the bit to fit the screws from ?
3/ gen vw cambelt kit or pattern ?

cheers   

[turbokid23]

Mate if you replace eney think on a golf make sure it all gen parts