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Thread: Huge engine problem - video included

  
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    Huge engine problem - video included

    Ok so i made another thread about spark plugs but that wasnt the problem.

    First things first.

    Engine: x14xe
    Miles: 140k (just incase you want to know lol)

    Problem: Low revs, car misfiring and stalling
    Error code from paper clip test: 0105, 0170 (cant seem to find exist)

    0105: Intake manifold pressure sensor - Keep reading i need to fix this for sure
    0173 Heated Exhaust Gas Oxygen (HEGO) sensor

    Things i have done:

    Been kwick fitt.. said could be coil pack, spark plugs or a valve

    Been Toomey Vauxhall.. said most probably EGR, wont be spark plugs (as they were new and i bought from them not long ago) said could be engine engine problems which would be major 2 fix

    Ok they didn't help much

    So i decided i would give it a lil Ian service:

    changed spark plugs
    changed coil pack (had a spare)
    Changed oil
    changed oil filter
    cleaned EGR valve
    cleaned throttle body

    Fired her up: she didnt want to start, revs were low. Took her for a drive, realised smoke/steam was coming out the bonnet.

    Then saw smoke coming from the manifold... well well well that explains error code 1. Would that make it mis-fire, stall etc.



    Picture says a thousand words so hopefully this video will tell you a million and everything you need to know.




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    Well the lambda sensor fault could be bacause it's missfiring.

    Sort the inlet manifold pressure sensor tho.

    Oh, if the EGR is buggered then no amount of cleaning will help it, buy a new one (VX or eBay)

    Change the other bit's first and if your lambda sensor is still throwing up a fault code then change it too.
    Astra SRi Turbo
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    How do i fix it, so i need a new manifold or is somthing loose?

    Ahh nasty £60 for a new egr.. u recon Vaux will let me put another 1 in to see if it works

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    Follow jam On Twitter
    P0105 - MAP sensor malfunction
    Cause...
    Wiring, MAP sensor fault, ECM

    P0173 - Fuel trim bank 2 malfunction
    Cause... Intake leak, Air system, fuel pressure/pump, injector(s), Evap canister purge valve, H02S (heated oxygen sensor 2).


    Right now we know the error codes correctly we can diagnose.
    A MAP sensor fault would cause it to over/under read which would also cause the injectors to be adjusted by the ECU to compensate for the lack or excess air coming into the system. This in turn could cause the HO2S to through an error as the readings are outside what its expecting.

    So first of all don't run the car unless you absolutley have to. Replace the MAP sensor and check for air leaks and cracks in the intake manifold. Once replaced clear the ECU of errors by disconnecting the battery for 30 mins.

    Start the car see what happens.


    My thoughts are that the MAP is telling the ECU theres more air going through than there actually is. So its compensating by adding more fuel making it drown and if its drowned then it won't combust correctly spilling out unburnt fuel on to the H02S.

    jam
    Its a jam thing

    Haec credam a deo pio, a deo justo, a deo scito?



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    Have you tested the coil pack?

    My old car did exactly this and i sorted it by replacing the coil pack,

    Here's how i tested it but don't do this unless you are being careful and know what you're doing!

    Pull each lead off the coil pack with the car running and if the engine isn't affected by one of the leads being pulled out then its the coil pack/lead/spark plug.

    When you unplug them if they are working you may well get a shock if you aren't careful!

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    I've already changed the coil pack and spark plugs mate, that would just be really unlucky if they were both broke?

    What is the leed?

    if it helps after cleaning the spark plugs and reinserting them they still got a build up of black gunk

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    Lead - sorry! As in the lead from the coil pack to the plug!

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    o right the coil pack came with new leads. Thanks anyways tho fella.

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    The Lambda sensor is the sensor you can see sticking out of the exhaust manifold in your video.

    Circa £80 for a new one from VX too

    It may not be what's at fault tho so check the other's first
    Astra SRi Turbo
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    Do you know what to do about the smoke out the exhaust manifold. Does it need tightening, refitting, replacing? Its coming out the side which i propper close up on in the video. Its hard to see the smoke through video tho.

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