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Model specific boards => Golf mk4 => Golf mk4 TDI => Topic started by: NotMyName on 27 October 2012, 16:13
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So on the back of some of my old threads, my brothers 1.9 100bhp TDI blew a few month ago. He was told it was the turbo that had gone, so rather than paying £1,500 to VW, the mechanic got the part number & did an eBay search & gave my brother the listing ID.
£300 or so later & my brother was providing this bloke a new turbo.
Had that fitted but it didn't solve anything really. Black smoke coming out even days/weeks later.
It went back & the bloke blanked off the EGR which helped a lot but didn't fix the issue.
Anyway, i think the EGR has been totally blanked now. New drive belt & tensioner fitted for the whining.
New AFM fitted & my brother fitted a new MAP sensor today which hasn't sorted the issue.
Basically when he's pulling away in 1st there's hesitation. He has his foot down & it's struggling past 2.5k revs. Switch into 2nd & everything is good to go - boost, normality.
He says he has to give the accelerator pedal a double blip at times when setting off to try & get going. Once he's out of 1st he's good, though he has said that this current turbo, even when working, doesn't feel as fast as the old turbo before it blew. I guess that's what over £1000 of turbo does then?!
Anyway, the mechanic said if it isn't the MAP sensor then he's tried everything he can think of. Any idea what can be the cause here?
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Clutch slipping?
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Get it on VAGCOM and get a full reading done by someone who knows what they are doing.
Get them to look at the boost reading, throttle position sensor, fuel readings through the injectors. It could not be reading the boost, and not putting in the fuel to the engine.
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Not sure if this is the reading you're on about, but i plugged in VAGCOM today & read the fault codes.
I notice it mentioning central locking - the drivers door was open when i was doing this so don't know if that'd throw a code or two up.
Anyway, for anyone fluent in fault-code'oligy, does any of this relate to the turbo issue? If not, then what can we do, short of constantly fitting new turbos hoping one of them fixes the problem....
VCDS-Lite Version: Release 1.0
Monday, 31 December 2012, 09:34:21:0
Chassis Type: 1J - VW Golf/Bora IV
Scan: 01,02,03,08,15,16,17,19,22,29,35,36,37,39,46,47,55,56,57,75,76
-------------------------------------------------------------------------------
Address 01: Engine Labels: 038-906-019-AXR.LBL
Controller: 038 906 019 FF
Component: 1,9l R4 EDC 0000SG 1449
Coding: 00002
Shop #: WSC 00046
WVWZZZ1JZ2B125895 VWZ6Z0A3868076
2 Faults Found:
17664 - Engine Coolant Temp Sensor (G62): Open or Short to Plus
P1256 - 35-10 - - - Intermittent
18080 - Coolant Fan Control 1: Open or Short to Ground
P1672 - 35-00 - -
Readiness: N/A
-------------------------------------------------------------------------------
Address 03: ABS Brakes Labels: 038-906-019-AXR.LBL
Controller:
Note: Excessive Comm Errors
-------------------------------------------------------------------------------
Address 17: Instruments Labels: 1J0-920-xx5-17.LBL
Controller: 1J0 920 906 G
Component: KOMBI+WEGFAHRS. RB8 V18
Coding: 01412
Shop #: WSC 00046
WVWZZZ1JZ2B125895 VWZ6Z0A3868076
No fault code found.
-------------------------------------------------------------------------------
Address 19: CAN Gateway Labels: 6N0-909-901-19.LBL
Controller: 6N0 909 901
Component: Gateway K<->CAN 0001
Coding: 00006
Shop #: WSC 00046
No fault code found.
-------------------------------------------------------------------------------
Address 46: Central Conv. Labels: 1C0-959-799.LBL
Controller: 1C0 959 799
Component: 1Z Komfortgerát HLO 0001
Coding: 00259
Shop #: WSC 00046
3 Faults Found:
01330 - Central Control Module for Central Convenience (J393)
53-10 - Supply Voltage Too Low - Intermittent
01359 - Internal Central Locking Switch; Passenger Side (E198)
27-10 - Implausible Signal - Intermittent
00930 - Locking Module for Central Locking; Rear Left (F222)
27-00 - Implausible Signal
End --------------------------------------------------------------------------------------------------
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whered he get the turbo from? wasnt one of those foreign 'recon' places was it? its odd that it only happens in 1st. have all the vacun pipes been checked for splits or Anything, also check to see the actuator is opening all the way.
those codes mean the temperature sender wants renewing - go to vw and spend the £29 on a genuine one rather than replacing the £5 ebay ones every week
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He bought the turbo off of eBay for approx £300. VW wanted around £1,500 for it. As it wasn't a cert that it'd fix the problem, he couldn't afford to throw £1,500 at a "maybe".
What sort of faults is the temp sender likely to give? The temp gauge on the dials reading incorrectly?
He's sort of fallen out with the car & only really wants it running right - which would be the 1st gear issue mentioned. I'll put to him what you said to see if he's checked.
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Apparently i've reported the problem wrong....
He's spoken to his mates & it's been put to him something about the 'waste gate' (sound right?) being blocked or stuck or whatever?
The problem...
He'll set off, so he's in 1st. He'll go foot to the floor but it'll only get to about 1.8k revs despite foot to the floor. Let the accelerator off, then put it back on & the turbo will kick in & the revs will finally pick up.
This repeats itself throughout the gears (all the way to and including 5th gear).
Ideas?
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Actuator not setup properly
I had this when the turbo was replaced on mine. It made a max of 5psi up to 1800rpm then all hell broke loose
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fair play, id rather spend 300 than 1500 myself. it does sound like the actuator isnt opening properly so its holding bk on the boost. if theres a feature on vag com you can measure the boost with the data logging feature and see whats happening. id say the vnt mechanism isnt opening fully
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Block 11 /13 off the top of my head. Its around there anyway
On mine I had a boost gauge plumbed in so I could see exactly what was or wasn't happening
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Block 11 for boost
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Thanks for the responses guys.
What is the solution then? To replace the actuator? If so, how easy is this to do? Is it a nightmare to get at or quite simple?
I had a gander looking for it: http://www.eurocarparts.com/car-parts couldn't find it on there So tried http://www.ebay.co.uk/sch/i.html?_trksid=p5197.m570.l1313&_nkw=MK4+Golf+TDI+actuator&_sacat=0&_from=R40 Cheapest item being £10 all the way up to £80 - so quite a range. What would be the correct item for the solution here? Or with something like this would you only buy from VW (& brace yourself for the bending over?)?
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Was the turbo a new one or an a 2nd hand turbo? As for approx £500 you could have had a brand spanker.....
You can adjust them and log the duty cycle. You are looking for anything in the 50-75% range when on full chat. Anything over will be working the turbo really hard or the turbo itself might be on the way out
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I tried looking for the eBay ad to link you but it's too old now. It was advertised as a brand new one. Correct part number for his too apparently.
My VAGCOM seemed pretty limited to what it could do beyond autoscan. Wondering if it's the USB lead side of it. He's not looking to spend a lot of money on it though, just enough to get it running right.
So are you saying that it'll likely not need replacing & just programming? IF it was to need replacing, is it hidden away & would require the engine ripping out or is it quite easy to get to?
EDIT: Sorry, just seen you said the problem is that it's not set up properly, not that it's faulty. My apologies - full of cold so am quite zombie like at the moment.
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You need to log the boost and duty cycle to determine if its faulty or just needs setting up
If it was a new turbo chances are it needs adjustment. Mine was a new turbo and they are apparently setup from the factory :rolleyes:
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Here is some light reading for you link (http://uk-mkivs.net/forums/t/394072.aspx)
Log block 11 to see what is happening boost wise :afro: