**UPDATE** Turbo K.O.'d???

[Ivor Mk4 Turbo]

I've already booked my car into Autovolks (local specialist).  £75 for the part, £220 labour (cambelt has to come off) + the extra for the new cambelt/rollers/water pump etc.

£400 + VAT in total!!! :gulp:

All I can say, is:-

a) Good job the cambelt is due anyway (6 yrs old), &

b) Good job I haven't had the cambelt etc changed already!

[New Duncan]

£400 + VAT in total!!! :gulp:

All I can say, is:-

a) Good job the cambelt is due anyway (6 yrs old), &

b) Good job I haven't had the cambelt etc changed already!

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You are a jammy sod mate ! Lucky as Larry.

Me, I blew my pump out at 48k, less than 5 years as well, on the M6 whilst tailing an R32 at a ton 20.  Was I pissed off  . I parted with nearly £400 at a Dealer who was: only So So and 120 miles away from my technician, and to cap that all off - they spoilt my set up  , and gave me extra vibration on doing up the engine mounting too hard, had to slaken off and align better when back home.

Ivor - check, check, check after the work is done - to make damn sure your Turbo is as sweet as it was originally. If not so - get back to them as soon as possible.

[GOLF_STU]

right not sure if this will help at all but i seem to have cured my boosting problems and it only cost me £31. like i say it might no be the same but check the breather pipe coming of the rocker cover it has another pipe joining it and it goes off under the dump valve and joins up to a diaphram valve. mine had split and it was giving me idleing problems too.



hope this might help guys 

[New Duncan]

Good point Stu,

However I did ask Ivor if he'd checked this on 22nd October:

"Have you checked the pipework for leaks, also do you have any oil in the pipework from crank case presure ? Oil could be plugging the leaks temporarily and then, next day, it's moved out of the split"

Crank case pressure is determined by the rocker box seal or hoses coming off it. This may be an "old term " in engine maintenance that you are not familiar with.

[Ivor Mk4 Turbo]

Cheers, Stu.

I did check all the hoses that i could see/get my hands at, but I wasn't experiencing any bad idling like yourself.

[New Duncan]

Ivor, how is your power now, after replacing the Hall sensor and the cambelt, pulley tensioner and water pump impellor.

Did the hall sensor do the trick, has your 205 bhp boost been fully restored ?

I'm most interested in the sensors in the 1.8 turbo, how they play up, what the diagnosis might be when there is a drop off of power, what to look out for and teething troubles.

Is the Silver Bullet back on song ?

[Ivor Mk4 Turbo]

Ivor, how is your power now, after replacing the Hall sensor and the cambelt, pulley tensioner and water pump impellor.

Did the hall sensor do the trick, has your 205 bhp boost been fully restored ?

I'm most interested in the sensors in the 1.8 turbo, how they play up, what the diagnosis might be when there is a drop off of power, what to look out for and teething troubles.

Is the Silver Bullet back on song ?

It certainly is, my friend!

Diagnosis & the new hall sender - Spot on!!!

Although, they did phone me up on the day (before they started the work) to explain that they discovered that the hall sender on the AGU was in fact not obstructed by the cambelt (only on the later models), & that I didn't have to have the cambelt etc done.  I still had it done , though, as it was overdue anyway.

[New Duncan]

I'm really pleased you got the result you wanted.

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Ivor, I had my Hall sender messed up by a Dealer (or is it something else) who fitted my new cam belt and water pump when the impellor split,  50 miles up on the M6. I had been tailing an R32 since the A34, to see what he'd got.  The weather and spray was appalling, so he didn't get away at all. I had fitted brand new wiper blades the week before.

Now the point of this story is: Is it the Hall sender or not ? Since that distress fix to get me home, the low down power is not there. I have to change down more for the turbo to come in, changing down looses edge.  Before the mess up, she pulled reasonably well from 1850 rpm in 3rd, now the turbo is lazy, or delayed for some reason. Ultimate power is ok, but as you know, it is low down grunt where you like to have it , and where you need it - for real pull.

Ivor have you ? or anyone else had this dilema