330 ci uneven idle
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  1. #1
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    330 ci uneven idle

    can anyone answer why stationary my 330 idles unevenly,has only just started and engine light is displayed,seems ok when driving tho.thanks

  2. #2
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    which light EML or engine shaped light?

  3. #3
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    its the engine shaped light, cheers

  4. #4
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    First thing I'd check would be for a split vac hose. Has it been doing it for long, and does it feel down on power?

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    reeceyboy (22-10-2012)

  6. #5
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    then its your emissions have degraded and coupled with your rough idle almost deffo a vacuum leak, which is common on these engines the biggest offender is the lower intake boot perishing and splitting (there are other offenders tho aswell) allowing umetered air to enter the engine so it runs lean triggering the light and the ECU is struggling to stabilise the tickover because of it

    its usually a big leak if tickover idle is affected aswell ...

    a scan for the trouble codes logged will confirm usually 227 and 228 codes or similar engine lean codes...

  7. #6
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    thanks for the info,had a similar reply from another member,so looking likely. many thanks again

  8. #7
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    get yaself setup with INPA software and ya car diagnostics wont cost ya anything...

    costs next to nowt to get setup see my INPA guide

  9. #8
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    sounds a bit over my head,brand new to this forum and i'm an old duffer so when it comes to anything regarding a computer i'm lost,so if you can direct me to your inpa guide i'll try to laod it up, cheers

  10. #9
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    theres plenty of help on here most have never seen it or used it before who come here...

    have a read in here long as yav got a laptop of some sort ya can get setup for as little as 7 quid...

    ECU Diagnostics and Tuning

    im no spring chicken @ nearly 47, if yav got a computer savvy offspring in the family im sure they can guide ya, i dont even have that luxury tho...

    theres also some good DIY guides on here ive done one for the duff lower intake boot if it turns out to be that, if its not had one in the past its a good possibility it will be split or perished they dont usually last beyond 8 or 9 years or 100k...
    Last edited by dailydoggy; 22-10-2012 at 14:50.

  11. #10
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    thanks again,i'll give it a try.just been out to have a look at the intake and sitting on top of the engine is the oil filler cap,exactly where i left it after topping it up the other day,replaced it all seems fine now apart from resetting the light,what a prat am i,can only put it down to my age so beware!!

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