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Thread: Serious help needed

  
  1. #1
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    Coupe04's Avatar
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    Serious help needed

    Hi Guys
    I am in need of some seroius help!!
    My cabbi is proving to be so full of shit!!
    I have had the following codes on the car and are now gone
    p0130
    p0135
    p0170
    The problems are:
    *The car idles like a VW MK1 with cams (very bouncy)
    *When the car is hot (sitting in traffic) the revs go from normal idle up to about 1500 RPM and play around like that.
    *I have changed the airflow meter
    *spark plugs
    *checked for leaks (found none)
    *Cleaned the TB
    *New lambda O2 sensor
    I ran the car on diag and saw that long term fuel trim bank 3 is sitting in between -32% to -40%
    Please guys help me out here I would appreciate any input.

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    BurrTony's Avatar
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    I would do a compression test.

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    What should i be looking for on the compression test?

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    wen i did my rebuild my idle was all over the place,couldnt find anything wrong till plugged it in to a fancy piece of kit that tests everything and turned out to be the connection on my front bcs,i had to take it off and remove lil rubber inside and re connect and fixed,it was shown all sorts off codes and problems up but was that and wen rubber removed,they all gone and idles perfect

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    Any large differences between the cylinders pressures would indicate a problem. Its a simple test to discount most of the mechanical side before looking at the sensors. Did you replace the AFM with a genuine Bosch?

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    Thanks for the replies guys.

    Jackdaxter

    Ill def try that and see if it works, which BCS though front or back?, shot m8

    Burrtony

    Will try that too, thanks

    I will post a reply with results.

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    florinike's Avatar
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    All those codes indicate an lambda error, i believe the first one. Try also disconnect the AFM, see if something changes.
    If you don't have smoke on exhaust and the exhaust does'nt woblle, then you shoulb be fine, no engine bad problem.
    Astra Coupe Z20LET EDS stage 2


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    Quote Originally Posted by florinike View Post
    All those codes indicate an lambda error, i believe the first one. Try also disconnect the AFM, see if something changes.
    If you don't have smoke on exhaust and the exhaust does'nt woblle, then you shoulb be fine, no engine bad problem.

    I have replaced the Lambda and uplugged the AFM, it didnt change anything

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    Than, mate, i am sorry to say this but you need to do a compression test. I presume, that if you change all of this, the only thing that happened is to have bad compression on a cilynder, usually 3. If it is under 9 bar, you will have to open the engine and check for piston rings, fail pistons, etc...
    Astra Coupe Z20LET EDS stage 2


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    dam, thats something I was hoping I wouldnt here...

    But I will post results of the compression test, thanks for all the feed back guys, if anyone else has any ideas please help me out :-)

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