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Thread: Misfire 1.9 cdti 120

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    Default Misfire 1.9 cdti 120

    Hi Guys,

    I have a 'misfire' on my veccy, it can occur at any revs in any gear at any speed and is totally random! it is like someone has cut the power to the car for a split second but is really bugging me to the point i am tempted to get shot of the car! I have been looking around on the forum and think it could be the EGR or the 3rd injector wiring, does the 3rd injector problem occur on the 120 as i can only find reference to the 150 having this problem?

    The EGR I think has been knocked out by VX as i had the light on and scanned the code which was an EGR fault, told VX about it and a guy just came out plugged tech2 into it and said he had knocked it out for now so the light wont come back on, and the light hasnt been on since?

    I am still under warranty but have a £600 claim limit for each repair, the car is going in today for wheel bearings on the front so I dont want them to fix anything else on this visit but really want this stutter problem sorted! Not sure if this is related but the car just sounds like poo recently, althought this may be the sound of the shot wheel bearings?!?

    Sorry for the long post, just getting sick of these issues as i love the car, just hating the sounds and stutters at the moment!!

  2. #2
    Regular Member DaveW555's Avatar
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    theres lots of things to check or clean, egr, boost valve, boost pipes, vacuum pies, throttle body, 3rd injector wiring (easy to spot if its been done already, the plug will be grey instead of black). try that lot for starters and see how you get on.

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    Thanks, will get busy once its back, how do i check boost pipes boost valve and vacuum pipes? Do i just look for spilts in the pipe, pretty sure its not boost as the problem can happen when crawling in traffic at 5mph long before the turbo kicks in

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    ok, rewired injector with nice new blue plug, still stuttering and misfiring, how do i check the pipes and boost valve?

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    new EGR fitted by VX, still misfiring... dont know what to tell them to check next, short of putting four new injectors, new throttle body, new common rail, new high pressure pump, new pipes, new fuel filter - new engine?!?!?

    I HATE MY VEC!!!!

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    confused Missfire / stutter

    Same problem on 2005 vectrs 1.9cdti (120) estate had tech 2 which indicated egr valve problem - Egr valve changed - rubber pipes on turbo changed - additive to fuel added to try to clean injectors.

    Running short or what to do . Awaiting feedback from the garage who carried out the tech 2 who have a car in with a similar problem.

    I find the problem is made worse between 1600 - 2000 revs and when the car is going up a steep hill.

    Oh also changed fuel filter

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    Just had a go at VX again, they are having it back tomorrow and are going to change the high pressure fuel pump, although they said if it is that then the part alone is £919 and my warranty only covers £600!!! They said that there system gives them three things to change starting with the most common which was egr, the next is the fuel pump followed by the injectors - this could be a costly one!!!

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    Get them to do a leak off check on the injectors before you do anything else, it will give a good indication of what the injectors and fuel pump are actually doing rather than just sticking a grands worth of stuff in that it may not need.

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    Will do, thanks!

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    rolleyes

    Was onto a garage who were trying to solve a similar problem they changed an injector which was down and the stutter is still there :-( Anyone any feed back on Boost valve replacement has it ever resolved the stutter problem !!

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