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Mk 3 golf issue

  • 16-08-2018 5:35am
    #1
    john mayo 10
    Registered Users, Registered Users 2 Posts: 962 ✭✭✭


    Hi
    Have ano 03 1.6 petrol golf. Car runs fine until I let it run idle ( tick over ). When I do the engine management light comes on and the engine starts 2 run roughly and lack power. The following day it's fine again. Baffled?


Comments

  • #2
    mickuhaha
    Registered Users, Registered Users 2 Posts: 475 ✭✭mickuhaha


    It sounds like it's happening when the car gets warm. Could be bad spark plug, coil, air mas sensor or egr just to start with. Do you have access to OBD scanner might help narrow it down to one cylinder.


  • #3
    john mayo 10
    Registered Users, Registered Users 2 Posts: 962 ✭✭✭john mayo 10


    Failed nct today on emissions. Should be between 0.97 and 1.03 and it read 1.43. Tester suggested it could be the cat converter.


  • #4
    BobMac104
    Registered Users, Registered Users 2 Posts: 1,100 ✭✭✭BobMac104


    Hole in your exhaust maybe. Ecu might be trying to compensate giving you your poor idle.


  • #5
    john mayo 10
    Registered Users, Registered Users 2 Posts: 962 ✭✭✭john mayo 10


    BobMac104 wrote: »
    Hole in your exhaust maybe. Ecu might be trying to compensate giving you your poor idle.
    No hole in exhaust are all. Nct guy checked and no leaks in exhaust whatsoever


  • #6
    BobMac104
    Registered Users, Registered Users 2 Posts: 1,100 ✭✭✭BobMac104


    john mayo 10 wrote: »
    No hole in exhaust are all. Nct guy checked and no leaks in exhaust whatsoever

    Fair enough. Your running very lean so for some reason. The Cat doesn't jump out at me though.


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  • #7
    john mayo 10
    Registered Users, Registered Users 2 Posts: 962 ✭✭✭john mayo 10


    That's the way the tester described it allright. Running very lean. If I leave her ticking over atall for a minute the engine management light comes on and she start stuttering and lacks pOwer when I drive off


  • #8
    Interslice
    Registered Users, Registered Users 2 Posts: 3,506 ✭✭✭Interslice


    Id recomend one of these cables if you have a laptop. It will tell you why the engine light is being triggered.

    https://www.amazon.co.uk/Diagnostic-Cable-OBD-II-KKL409-1-VAG-COM/dp/B005ANYHQA/ref=mp_s_a_1_4?ie=UTF8&qid=1539292096&sr=8-4&pi=AC_SX236_SY340_FMwebp_QL65&keywords=vcds+vag+com+cable&dpPl=1&dpID=51L0KVaIHrL&ref=plSrch


  • #9
    john mayo 10
    Registered Users, Registered Users 2 Posts: 962 ✭✭✭john mayo 10


    Put a new coil pack into the car last night. We done an immision test and it read within the limits. Mechanic is going to.put new spark plugs in aswell so hopefully this will work


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