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B6 passat cutting out problem

  • 10-08-2018 5:00pm
    #1
    Kellogs331
    Registered Users, Registered Users 2 Posts: 4 ✭


    Hi folks i have a 2007 1.9 tdi b6 passat that when driving the rev gauge will drop to 0 rpm while your still driving then all the warning lights flash on the dash the abs, parking brake and engine management light will all come on then the centre display will flash emissions garage and then after that will say low oil pressure please stop and the car will still be driving after all of that happening but it has now started driving lumpy and as soon as you clutch to go down the gears the engine just dies and you come to a rolling stop but the car will start again straight away and run again but you can be sure that this will happen again within 2 mins has anyone had this happen and did you find the problem thanks in advance everyone ðŸ‘


Comments

  • #2
    Tea drinker
    Registered Users, Registered Users 2 Posts: 2,817 ✭✭✭Tea drinker


    you probably need to get the error codes read


  • #3
    Kellogs331
    Registered Users, Registered Users 2 Posts: 4 ✭Kellogs331


    Tea drinker wrote: »
    you probably need to get the error codes read

    It turns out the ecu is shot


  • #4
    Tea drinker
    Registered Users, Registered Users 2 Posts: 2,817 ✭✭✭Tea drinker


    Kellogs331 wrote: »
    It turns out the ecu is shot
    Well at least you know.... did you replace the ecu.... replacement should be easily found.
    Make sure to check the connector at the ecu for water ingress. And the bulkhead drains are clear. If all clear I have taken to put some soap or shampoo squirted around in the hope it helps keep it clear.


  • #5
    223vmax
    Registered Users, Registered Users 2 Posts: 475 ✭✭223vmax


    Crank position sensor.


  • #6
    Kellogs331
    Registered Users, Registered Users 2 Posts: 4 ✭Kellogs331


    Tea drinker wrote: »
    Well at least you know.... did you replace the ecu.... replacement should be easily found.
    Make sure to check the connector at the ecu for water ingress. And the bulkhead drains are clear. If all clear I have taken to put some soap or shampoo squirted around in the hope it helps keep it clear.

    Okay ecu changed no go cam shaft sensor and injectors also changed and still no joy the mechanic is starting to run out of ideas also


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  • #7
    richardsheil
    Registered Users, Registered Users 2 Posts: 691 ✭✭✭richardsheil


    You mean mechanic doesn't know how to diagnose. Is he giving refund on pointless work done so far?


  • #8
    scannerd
    Registered Users, Registered Users 2 Posts: 236 ✭✭scannerd


    wow, talk about loading up the parts cannon before knowing whats wrong, keep change parts you get there eventually


  • #9
    Tea drinker
    Registered Users, Registered Users 2 Posts: 2,817 ✭✭✭Tea drinker


    223vmax wrote: »
    Crank position sensor.
    @kellogs did he replace this, I think it's maybe a good call


  • #10
    Kellogs331
    Registered Users, Registered Users 2 Posts: 4 ✭Kellogs331


    Tea drinker wrote: »
    @kellogs did he replace this, I think it's maybe a good call

    I have the car back now today the crank shaft sensor was checked correct voltage going to and coming from the sensor and no fault code for it he has since changed the timing belt as it had not been done in about 100000 km upon doing the timing belt he discovered the belt had wandered way to the right hitting the cam shaft sensor and setting off all the lights the reason it wandered is due to over tightning the tensioner pully i have the car back over 5 hours now and hasent done what it used as described in my first post but now will just die and the battery light will come im thinking its a bad earth maybe ill put the meter on it tomorrow


  • #11
    Tea drinker
    Registered Users, Registered Users 2 Posts: 2,817 ✭✭✭Tea drinker


    Kellogs331 wrote: »
    I have the car back now today the crank shaft sensor was checked correct voltage going to and coming from the sensor and no fault code for it he has since changed the timing belt as it had not been done in about 100000 km upon doing the timing belt he discovered the belt had wandered way to the right hitting the cam shaft sensor and setting off all the lights the reason it wandered is due to over tightning the tensioner pully i have the car back over 5 hours now and hasent done what it used as described in my first post but now will just die and the battery light will come im thinking its a bad earth maybe ill put the meter on it tomorrow
    Well I suppose it's a process of elimination.
    Simple one you could do yourself, you could reset the ECU adaption by disconnecting the battery, in case it learned something a bit funky when the cam sensor was off. You may lose fault codes but no biggie as going by the above if it's not fixed you will have no problem getting more codes.
    There's a whole load of earth on the car and some go to more sensitive electronics, you would be dissing the battery anyway if you are checking / tightening / cleaning them


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