any ideas - losing the will to live

[s2driveruk]

Could really do with some advice on my old bus, an audi a6 avant 1.9tdi (MY2001 AJM engine, 176k miles)

Went into a supposed VAG specialist for a HG issue - pressurising the coolant circuit and blowing coolant out the header. Car is now back together and I went to collect earlier in the week.

After they road tested it ahead of collection, the brake pedal was solid and they identified a fault with the tandem fuel pump/vacuum assistance for the brake on the back of the engine. Now I'm not sure they road tested the car after fitting the new pump, when I drove it away was hardly moving away from a junction - to the point where i almost got caught out on a roadabout!!!

Anyway took it back, car appears not to have any low down boost, then seems to make 'some' at about 2200rpm but its pretty lumpy. Idles fine, no massive smoke etc.

I'm presuming its an issue with the N75/MAF/map sensor, vac lines mix up or something but they tell me no fault codes logged and they are rapidly running out of ideas and I'm running out of any respect for the technical fault finding skills too.

Appreciate you haven't seen the car but hopefully there is enough of a picture to be able to suggest something please :-)

Many thanks
David

[simon20vq]

I had a similar issue on an old passat tdi130, turned out to be a vacuum pipe that was pinced causing it to not boost for long!(acted like a faulty maf) Does it make any difference if you turn the ignition off then on again (wait 2 min)

[s2driveruk]

no, doesnt appear to be in limp mode, no fault codes stored at all. I think it *could* be a MAF as they don't log a code so to speak but from memory just don't display the right kind of values to determine it its healthy or not. When it displayed similar symptoms about a year back, it was a split vac hose. I'm sure they have plumbed in the vac lines incorrectly or something. I'll be paying them an un-announced visit later to see what's going on i think

[Fat Audi 80]

I feel your pain, my alternator tension bracket snapped on the way to work this morning (Audi 80 Sport). I have limped to work, but the car has over heated as the water pump runs off the same belt. This is all due to the fact that I have fitted a pattern part alternator that does not have the correct pivot bolt hole diameter and was rattleing everso slightly when fitted. Stupid me, assumed it would be okay but it has fatigued the tension bracket into failure after a couple of weeks....

I am now stuck at work with a broken car on a Friday.

Bloody old cars. I should have chopped it in when the alternator went south.

(Can't help with your fault I am afraid David....)

Cheers,

Steve

[s2driveruk]

what a nightmare Steve, is it cooked or?

[Fat Audi 80]

I think the head will be okay, as I have only driven it about 5 miles like that. Although to be honest if the bloody thing is dead, I would not hesitate to scrap it and save up for a new car. I get the train to work most of the time and it hardly gets used. I should have the S2 back on the road for the summer in a couple of weeks. (Just got to change the front subframe)

[bikerjim]

Those symptoms do sound like a maf problem to me. Seen it on a couple of later vw/audi cars and also freelanders etc.

[s2driveruk]

i have a spare maf, will dig it out and see if i can prove/disprove that one - cheers Jim

[Al Wyn]

Mr David...sounds incredibly familiar to the issue we had with the wifes Seat Alhambra Stylance 1.9TDI new maf...problem solved then it absolutely flew and then the exhaust fell off but it goes much better without it good luck David. CheeRS Al

[s2driveruk]

Mr David...sounds incredibly familiar to the issue we had with the wifes Seat Alhambra Stylance 1.9TDI new maf...problem solved then it absolutely flew and then the exhaust fell off but it goes much better without it good luck David. CheeRS Al

cheers Al looking very much like a maf issue then, why they couldn't have identified that themselves is beyond me...I shall be recovering some of the final cost I'm sure of that

P.S. long time no speak, hope you're well....might well bump into you at the breakfast meets this year.

[Fat Audi 80]

Well the RAC have turned up, taken the alternator and bracket away. Bracket will be welded back up and alternator mounting hole sleeved to prevent it happening again.

I will let you know if he accomplishes his mission. He was even smiling as he left!

[s2driveruk]

sounds like a promising step Steve...

[Fat Audi 80]

If it saves me from doing the same job over the weekend it will be bloody amazing!

[Fat Audi 80]

All done, cost me £20 for a drink for the patrolman! (Sorry for blatent hijack)!

[s2driveruk]

off out to see the garage in a mo, lets hope its a similar outcome!