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  1. Nevins 
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    Hi all,
    I'm new here and would love for people to give me their advice on my bmw. It's the 1.9 e36 compact and I got a problem thats doing my head in. When the engines running the idle speed drops to about 500 rpm and when you rev it , the revs pick up but if you try and rev it again quickly it doesn't want to rev. There is a new maf sensor on it and the elbow joint to the throtle body is not split in the corrigations.
    If any one has any ideas feel free to share them.
    Thanks
     
     

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    What year? and also 8 valve or 16?
     
     

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    It's a 16v and on a t plate 1999
     
     

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    Check for air leaks from around any pipes, i.e. engine breather,Vacuum pipes etc, Also have a listen to the crankcase ventilation valve, it's a round black valve with a pipe going to it, located next to where the inlet manifold top half bolts on. The valve has a little triangular shaped vent in the top, if it whistle/sucks from here then the valve has gone.
    Otherwise you may have to have the codes read.
     
     

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    Quote Originally Posted by nevins View Post
    Hi all,
    I'm new here and would love for people to give me their advice on my bmw. It's the 1.9 e36 compact and I got a problem thats doing my head in. When the engines running the idle speed drops to about 500 rpm and when you rev it , the revs pick up but if you try and rev it again quickly it doesn't want to rev. There is a new maf sensor on it and the elbow joint to the throtle body is not split in the corrigations.
    If any one has any ideas feel free to share them.
    Thanks
    Hi and welcome

    how do you know that the throttle body elbow is not split?
    Visual inspection may not be good enough unless you have removed it and pressure tested it thoroughly

    Also, get the fault codes pulled as Ronnie says.
    Any good garage should be able to do it...
    a fair price is £25~ or thereabouts
     
     

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    know its not split as i had to replace a split one . BMW parts aint cheap and i found this out when replacing the pipe
     
     

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    checked the valve and nothing seems to be escaping from it will have to take it to a autolec to goet the codes read
     
     

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    Quote Originally Posted by nevins View Post
    checked the valve and nothing seems to be escaping from it will have to take it to a autolec to goet the codes read
    I think getting the codes read will give us a much better baseline to find the fault from.
    Once you have them please post up any codes found....if it doesnt find anything then that will also point to likely causes
     
     

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