A4 1.9 Tdi Juddering (spluttering) Running Bad

audihull

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hi all i have an audi a4 1.9tdi year 2001 and have got a problem with it . a couple of weeks ago when first starting it i would turn it over as normal it would sort of start up and then cut out straight away so i would turn off and turn back on again and i would have to turn it over for like 2 minutes i thought the battery would go flat it takes that long and then it would sort of splutter and start up (only when i pumped the accelerator) then it would be fine. it seemed like it would only happen if i tried starting it without putting my foot down on the pedal a touch. also now it has started constantly juddering (spluttering) really bad in every gear sort of like kangarooing and then i can get to 40mph and sort of get it running fine. this seems alot worse in the morning when the car is cold. now i have gone to a local garage and he cant seem to find the problem yet he as plugged in to computer and there is no error codes i cant really afford to pay audi prices so i was hoping somebody may have had this problem with there own or any mechanics may be able to tell us the possible problems so i can pass the info on to the guy at garage. cheers in advance
also forgot to mention when in idle the car is shaking like rocking side to side quite bad until u put your foot down on accelerator and rev it then it stops the guy at garage says its running on 3 cylinders then goes on to 4 ? does this sound like anything i dont no anything about car engines ??
 
You have a classic issue of tandem pump going bad/fuel draining back in the tank- hence the hard start and also the injector wiring loom is shorted so the car cannot control the injectors on load. You need to get the car to a competent mechanic/vag specialist as the said issues will trigger codes inside the ECU... You can go to local audi and order a new injector wiring loom and get a garage to replace it for you- fairly easy job even though it's inside the engine, under the rocker cover... New wiring loom should cure the juddering on load but won't fix the starting issue...
 
hi mate just thought id update you on my car the garage still ha it he has had an auto technician out today and ran some tests and said the in tank fuel pump needs replacing so hopefully when i get new 1 fitted all will be well cheers