Car cutting out

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Mojooo

Original Poster:

12,845 posts

183 months

Wednesday 29th May
quotequote all
Any thoughts on this?

2013 VW Golf Petrol Manual

Car giving out black smoke


Took it to 1 garage who replaced plugs but couldn't diagnose

Took it to a VW/Skoda specialist but they couldn't diagnose

Took it to VW main dealer - they have replaced injectors which has stopped the smoke but the car cuts out unless you keep your foot on the accelerator (on startup).

VW basically saying they are not sure what it is but car can be kept there and they will look at it when they can but basically doesn't look like they can do much. The car has been with them for weeks. They also mentioned another car they have in has the same problem.

Spoke to another garage next door to VW and they said if the car is coming on and cutting out its possibly an electrical problem and gave the details of an auto electrician to contact

Due to the large bill at VW its almost a case of do we scrap the car.

Final shot may be to take it to an auto electrician and hope for the best. It does perhaps make sense it could be an electric problem that has been missed by 3 mechanics.

Does anyone have any insight as to what it might be?

Mojooo

Original Poster:

12,845 posts

183 months

Wednesday 29th May
quotequote all
Volkswagen Golf Hatchback 1.4 TSI Bluemotion Tech SE 5d 2013/63

Its my brothers car he says

The car started jerking and was revving itself
The following day he put fuel in and the car started putting out black smoke so he stopped using it

VW say they have resolved the black smoke (they have installed 4 fuel injectors I believe). They say that the car will start but you need to keep your foot on the gas to keep the temp up otherwise it stalls

The link above suggests it could be a mechanical or electrical problem.

Surely the garages would have checked the air filter?

Mojooo

Original Poster:

12,845 posts

183 months

Wednesday 29th May
quotequote all
Robertb said:
As the problem started after refuelling, Could it be dodgy fuel?
The first garage looked into that but apparently not.......

Also dodgy fuel doesn't cause black smoke?


Mojooo

Original Poster:

12,845 posts

183 months

Thursday 30th May
quotequote all
Olivergt said:
There are a couple of suggestions on here

https://vwtuning.co/vw-1-4-tsi-engine-problems/

Basically ignition coils and O2 sensors, I would have thought though that if they were bad you would get the EML on and a relevant code.

Is it showing any codes at the moment? If so what are they?
Not sure
I briefly spoke to the VW man yesterday and he didn't mention any codes - I would have thought they would have tried to fix anything with a code on it.

Mojooo

Original Poster:

12,845 posts

183 months

Saturday 8th June
quotequote all
chrisch77 said:
If it needs throttle to keep it running until warm, then it could be something as simple as a faulty coolant temperature sensor making the ECU think the engine is already warm and leaning off the fuelling. Any proper mechanic should be able to check this by looking at live data on a diagnostic machine.
I happened to meet a mechanic today who also suggested this

We've decided to pull the car from VW and sell it for scrap/take it or leave it but I may ask the garage if they have checked this.