Hi all,

I'm relatively new on here, although have been lurking for a while as was recommended by a member over on briskoda.

Around 6 months ago a bought a 2004 Td6 vogue.

I did all the usual checks before a bought it and was swung by the fact that the gearbox had been replaced by a reputable specialist around 3 years earlier.

What I'm getting is a very intermittent weird fault.

Driving the car normally day to day it's fine buzzing around town, motorway journeys etc. Everything is smooth and it changes gear faultlessly. I even towed a friends car back on a 200 mile trip effortlessly.

I've found that I've I do a motorway journey then labour it a bit around town, ie stop start etc with 4 people in, when I lift off the brakes at traffic lights and such, rather than crawling smoothly forward it judders.

Now I've found you can drive through this fault. Usually a couple of miles steady run and it will clear and all will go back to normal. Or if you just leave it the next day it will be fine.

Any ideas?

I'm kind of thinking that the gearbox oil and filter needs changing but though I'd ask first.

Many thanks in advance.

Paul.

id drop the oil out pal , cheapest place to start and see if that helps at all

Was thinking that. I originally was concerned it might be an injector but the engine seems smooth.

I'm guessing labouring the convertor it causing the oil to overheat and breakdown.

Double flush method is best I believe?

or its poss low on oil , single flush should be fine from what ive read pal

It took me best part of 2 years to finally nail down a similar issue. My TD6 ran perfectly, great MPG etc but randomly after hard acceleration then stopping quickly I would get a judder. When in neutral the engine ticked over smoothly and acceleration was normal and unaffected. It felt worst when reversing into my garage. Turned out to be an injector. 2007 TDV8 VSE
2003 TD6 gone.
2002 P38a gone
1999 P38a gone
1997 p38a gone
1993 VSE gone
1992 VSE gone
1966 Series 2a with V8 conversion gone

Maybe that's my issue then. Think I'd be kind of glad if it was as the gearbox scares me to death!

I'll do the gearbox Service as a precaution as I'd feel happier knowing it had fresh fluid and filter then see if I still have an issue.

Was yours the actual injector at fault or the loom?

It was an injector. I kept forcing the car to get the judders and then ran diagnostics ( BMW IPNA) to see if I could see a fault. On live values, I started to see a pattern with injector 6 so picked up a very cheap secondhand one and had it reconditioned via ebay. A simple swap and problem solved. Easy job as long as the injector comes out without too much of a fight. I doubt it took me longer than 2 hours start to finish. 2007 TDV8 VSE
2003 TD6 gone.
2002 P38a gone
1999 P38a gone
1997 p38a gone
1993 VSE gone
1992 VSE gone
1966 Series 2a with V8 conversion gone

I just cured a similar issue by cleaning the connector on the injector as when I disconnected it there was a little puff of orange dust as I had an injector fault logged. The looms are prone to faults and I wonder how many problems are just the connection that gets rectified when the old injector is unplugged and the new one plugged in .
I had a fault logged and also live data showed injector was faulty

http://www.fullfatrr.com/forum/topic44898.html

Was not the loom or plug on mine. In trying to find the fault I actually removed the injector and cleaned the nozzle and needle then checked the spray pattern was correct, all 5 holes were clear. In doing that job I had to disconnect the harness from all injectors before refitting. It never cured the problem. The loom can be checked for continuity and resistance with a simple multimeter, there is a how-to video on youtube. 2007 TDV8 VSE
2003 TD6 gone.
2002 P38a gone
1999 P38a gone
1997 p38a gone
1993 VSE gone
1992 VSE gone
1966 Series 2a with V8 conversion gone

So when you checked your injector was it not spraying out although the holes were clear ?
I imagine the injector is just a solenoid that opens when it's told to by the ECU?
I plugged in a type of noid light into the loom which flashed ok so i assumed the wiring was ok, it might have been the male connector on the top of the injector that was corroded as the wiring checked out ok on mine too.

My injector appeared to be working fine. I removed it just to check the nozzle was not blocked. https://www.youtube.com/watch?v=NUvWnOd5lFw

This video gives a good guide on how to remove the nozzle and pin to check the spray pattern. Although our injectors are very similar the holes are microscopic and not visible, unlike the one he is working on. https://www.youtube.com/watch?v=guYFnOMlR_k 2007 TDV8 VSE
2003 TD6 gone.
2002 P38a gone
1999 P38a gone
1997 p38a gone
1993 VSE gone
1992 VSE gone
1966 Series 2a with V8 conversion gone

Thanks guys. I've got a few things to look at anyway.
Mine only judders now and then, doesn't help that I barely drive the car but I think I'll Service the gearbox as a matter of course and then look at the injectors / loom.