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**I have today finally managed to scrape the pennies together to get the wiring loom replaced. Got the new loom from VW

Many thanks Seatkid, that's a bit more reassuring, I was worried I may of made things worse. I've been quoted

Hi Amarok, thanks for the reply. I appreciate your concern but just to put your mind at rest the Maf and Map were changed last year in response to specific fault codes identified by my mechanic. It's not just a case a case of me changing things willy nilly :)although I did try disconnecting the maf just to see if it affected performance. This running rough is a separate problem which has only become really bad in the last month. I will be getting my mechanic to check the wiring loom and injectors to see if this is the cause of the problem, and replace if required. I just needed to be able to narrow the fault down before committing to having the work done. Times are hard, in an ideal world I would just put it in a main dealer and say find the fault and repair it, but unfortunately I've not won the lottery this week (again!) :) I'm just so grateful for this site, it's given me lots of help and information. Thanks Donna

Well done Chris and Seatkid, managed to get vagcom running and the fault is 18074 PD Unit Injector, cylinder 1, electrical malfunction. I've been on the Ross Tech website and found the fault code and it says "wiring or connections to/from the valve for pump jet, check wiring etc. It also says replace the wiring harness before any injectors, am I right in thinking this is the injector loom?, also do you know roughly how much they cost. Many thanks for all the help (and for the telling off Chris :) )

Sorry.............I'll get my coat :)

Following on from my previous thread, the juddering definately seems to be oil temp related. When started from cold car judders, low power and terrible mpg. When the oil temp is up to normal temp (90deg) if you turn the car off and back on it drives great, no shuddering, lots of power, back to normal. So can anyone give me any help as to what might be causing this, feel a bit happier now I can see what's happening, just need to find out why. Many thanks.

Thanks Chris, one more thing to think aout lol. Definately think it's temperature related, I've been watching it closely today: Car started from cold = lots of shaking, no power, runs terrible. Car brought up to normal operating temperature, switched off and back on again = no shaking, full power, runs and sounds perfectly normal?. So, could it be the temperature sensor, would this show these symptoms?, or does anyone have any other ideas? Thanks ever so much :rolleyes: Ps I've put the Millers power sport 4 in as well so I'll see if it makes any difference.

Quick update, I've been running the kids to school this week and the first trip of the day the car is truly awful, mega shaking, no power, terrible mpg and sounds worse than a tractor :rolleyes: However upon dropping off the youngest where the car stands for 5 mins or so then the next trip is fine, power, no shaking in any gears, mpg back up, it's like driving a different car. Surely if something major has gone, gearbox etc, it would be bad all the time, not intermittently??. So, could it be realated to the cars temperature?, once it gets up to 90 deg I seem to get normal driving. The other things I've been thinking of are fuel injectors, if they are clogged would this cause these symptoms? I've just got some Millers power sport 4 to try and see if it helps. Also EGR valve if it's filthy (more than likely) would this cause these problems and how easy is it to remove and clean, bearing in mind I am a helpless female :o I forgot to say the car has done 138,000 miles if that's relevant. Any comments or suggestions gratefully accepted, pleeeaaase :( Ps Am still getting to grips with the Vagcom, will post any results I may get, if ever lol

Thanks Chris, found it and changed it to 3, I'll give it another go tomorrow and see if I can get any further, just had one of those rare trips where it ran lovely, plenty of power, no shaking, reminded me how it can be :(

Hi Chris, yes it's also running very slowly, I'm just trying to find out how to lower the "latency" to 3 (found on a thread on here) to see if that helps. I've only recently done a full reset so I've not got much to lose if I have to do another one! been doing this all day now :(

Well I've managed to get the VagCom running and it's talking to the car!, the problem now is I keep getting the message "Too many errors to communicate" but apparently my ABS is fine lol!. Is it just a crap cable or does someone know a way around it?. Please help!!!.

Just to add, I've tried it with the Maf disconnected, the shaking remained the same, I just had absolutely no power, people were staring at me lol. Also the shaking is REALLY bad, just like driving over a cattle grid, the only way I can continue driving is to drop down the gears and acclerate again, it's driving me nuts!,the stupid thing is the power is there?

Thanks Mirez, no the power stays the same, great acceleration in 3rd and 4th, shakes in 5th and then keeps shaking if I let the speed and revs decrease. It only lacks power in 1st and 2nd eg, pulling away at junctions, then it threatens to stall and has done on occasion. A couple of other things to note I have noticed my front tyres squealing more than normal, as if they can't cope with the power. Also we had a small oil leak a while back, again don't know where from but that hasn't re-occurred. I'm near Blackpool in the North West if anyone can help.

Hi Mirez, the service was, new fuel filter, air filter and oil filter, oil change, brakes checked, the car did run a bit better in the week following so I was hopeful that the oil change had done some good, but it soon went bad again.

Hi Chris, thanks for the reply, I've just got a vag com lead and I'm still trying to fathom it out, recognises the computer port and the car just won't run the programme, it keeps shutting down?. As soon as I get it running I'll post the codes, think there may be a few :lol: