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Golf MK4 Turbo cutting out


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The part number for the N75 valve (which the dealers may know as a "pressure converter") is either 1H0 906 627 or 1J0 906 627 depending on the age and vin of the car. Armed with this info, the dealer should be able to find what you want. 169144-ok.gif

Here's a picture of one.

943081-n75.JPG

[/ QUOTE ]

right i have chance of 1 after reserch (if the net is right ) i have come up with 1H0 is from a mk3 golf mine is mk4 which starts 1J0 will it work on mine?

There part number is 1H0 906 627 A.

my part number is 1J0 906 627 B

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[ QUOTE ]

[ QUOTE ]

The part number for the N75 valve (which the dealers may know as a "pressure converter") is either 1H0 906 627 or 1J0 906 627 depending on the age and vin of the car. Armed with this info, the dealer should be able to find what you want. 169144-ok.gif

Here's a picture of one.

943081-n75.JPG

[/ QUOTE ]

right i have chance of 1 after reserch (if the net is right ) i have come up with 1H0 is from a mk3 golf mine is mk4 which starts 1J0 will it work on mine?

There part number is 1H0 906 627 A.

my part number is 1J0 906 627 B

[/ QUOTE ]

Yes 1H0 = Mk3 and 1J0 = Mk4

But the early MK4 cars used a Mk3 part so a Mk4 can have either a 1H0 or a 1J0 part. 169144-ok.gif

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There is a way to cycle "something" on VAG COM. Note the word something grin.gif

I did it on mine and i am sure it moves the VNT in and out. It was recommended i activated it and let it operate for 10 mins to make sure its moving ok. Only thing i noticed was the engine note changes slightly and the engine goes a little juddery when it operates it.

If i can find the info or link i will post it up 169144-ok.gif

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i cant get to vag com that easy, to get my vnt moving i got a can a WD half of it then got a bit of 10mm square wood stuck it between the inlet and engine down the back (mind that oil pipe on the turbo) located the top of the vnt and pumped away. saves going under the car, and saves scrapin half me skin off down the back of the engine.

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Hi I'm fairly new to these forums.

Let me loose now with my problems. Golf GT Tdi 150, in the last 9 months i've had all this work without warranty (so I'm pretty skint now):

1. air mass sensor replaced after initial "limp" performances, £120

2. Went limp again a couple of weeks later and shuddering with lots of black smoke when accelerating, thus a brand new turbo. £670

3. full service with cam belt change which revealed a worn cam shaft, therefore also replaced, total job £750

(Also three tyres and front discs & brakes just to make the garage trips even more regular £££££££££££££££)

This seemed to cure all my problems until recently and now just feels rough when accelerating, like a "pipey" fat exhaust sound instead of that smooth turbo boost. And seems to lose acceleration after about 2000rpm. The turbo is whistling away and seems to be making the "hiss" dump sound when changing up, but I can't say for sure if it does that every time, maybe only when you floor it. Which I don't think you should have to do to get this engine to shift?!

All mouth and not much action.

Took to VW a couple of weeks ago with this grumble, they said a split vac pipe (where I don't know) was the problem. No better at all though. I also pointed out a rattling when lifting up the clutch to move off in first, they said the "heat shield" was rattling and replaced this but guess what, it still does it.

Any ideas what to get checked out next anyone? I just love spending ALL my money on this fecking car and not getting to the root of my problems.

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