Worried

[Velsheda]

Hi all.

Have a 57 plate GTi (5dr Grey) & have been a lurker on here for some time (usually after tyre advice or dreaming of remaps once the warranty runs out) but am now posting seeking advice.

I've always gone through the oil faster than I'm used to, but after reading posts on here thought not much more of it and kept an eye on the levels and topped it up when required with Edge. For what it's worth, always fill with Vpower. But recently have noticed a couple of issues & before going to stealers thought I'd post here & see what everyone thought.

i) Started getting fairly heavy black sooty deposits on the exhaust, much thicker than when new & hard to get off.
ii) DSG box is getting really "twitchy" after more than about 30 mins of town driving. It's good as gold when cold & also when on the move, but put it in D & release the brake & I go lurching down the road. Not cool, and if you rev at exactly the right time it can be avoided (but get timing or amount of throttle slightly wrong & it can make it much worse too).
iii) And finally what prompted me to post here - y'day going up my favourite hill saw a load of smoke in the rearview. Was following a black cab so assumed it was that. Today though (just to check, you understand) floored it in the same place &  it was in fact from my *sob* GTi. Eek.

Before I go down to the stealers and basically sign over my cheque book to their (tender, loving) care, are there any obvious things I should look at first...or suggest to them what it might be? Anyone had anything similar with theirs?

Thanks in advance for any help that anyone can offer - even if it is "oh my god, get it to the car-doctor straight away" at least that would confirm my fears.

Cheers
Iain.

[Hurdy]

Yep, it is under warranty and still stock, so get it back to the dealers.

Possibly another MAF problem, which could also account for the DSG feeling "off" when it is really the fuelling.

[2007GTI]

whats MAF, same as mechatronics thingy?

[Hurdy]

whats MAF, same as mechatronics thingy?

The Mass Air Filter - it is a sensor which detects the flow of air coming into the engine for combustion and then sends on the info to the ECU (Engine Control Unit), which in turn determines the amount of fuel to mix with it. The MAF sensor is located at the rear left-hand side of the engine cover and is attached by two torq screws and the wiring unclips from the sensor by depressing the plastic latch in the rectangular clip at the top of the connector (two minute jobbie). If you take it off it should be clean.

[2007GTI]

thanks Hurdy, the complaint sounds similar to the mechatronics discussion, as my DSG is playing up, so its good to the have the facts when seeing the stealer.

[RedRobin]

thanks Hurdy, the complaint sounds similar to the mechatronics discussion, as my DSG is playing up, so its good to the have the facts when seeing the stealer.

....If your Mechatronics Module (great term!) was playing up you probably wouldn't be able to select gears.

[Saint Steve]

This sounds like a duff Mechatronics Unit for the DSG. It acts like a person with bad clutch control is the only way i can discribe what it does, lurches and cant make up its mind when to give you drive.
Sounds like a linked fault with it over fueling(black smoke). Whats its average MPG currently?

If it is, get it to the dealers,it should be under warranty and this unit does cost 4 figures!.

Hope this may help.

 

[gtigolfthree]

Black smoke assuming its not a diesel would certainly suggest overfueling. whats your mpg?

[ub7rm]

Black smoke assuming its not a diesel would certainly suggest overfueling. whats your mpg?

Not necesserily, the FSI engines are quite smokey.  The exhaust tips on FSI cars are blacker than most modern diesels!

On a similar note, I was behind an RS4 and when he came off a roundabout he opened the taps... holy crap that threw out a lot of smoke.  I'd have been forgiven for thinking it was a bus!  Of course all that was left WAS the smoke, he was a vanishing dot in the distance 

[Saint Steve]

Mine went of JKM's rolling road, and alot commented on mine that puffed out some Black smoke apon nailing it, but produced the highest BHP on the day out of 4 standard Edition 30's strangley.

Seems that as you say the TFSi units can be smokey,but not as bad as some Vw diesels.