Fluctuating / bad idle
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  1. #1
    Administrator Nich's Avatar
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    May 2006
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    Surrey, United Kingdom.
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    Quote Originally Posted by AndyW View Post
    Update: egr valve works perfect. But the problem ist still there.☹️
    Have you checked to make sure the fuel pump has not separated, it's under the rear seat squab on the right of the car looking from the front.

    Nich.
    Nicholas John Peter Tinker - # 484

    Manufactured on Tuesday 27th April 2004 @ 12.17.47.
    Commission Number: 24468.
    Brochure Model: M3 Tourer 4.6 V8 260PS.
    Specification Code: L01B.
    CICode: D1511.
    Trim Level: TL8.9 (M3).

    65th ZT-T 260SE to be made out of 115.
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    Manufactured in the UK by MG Rover Group Ltd.


  2. #2
    wnj516
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    May 2006
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    Llanelli, , United Kingdom.
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    Has the throttle idle screw been adjusted,ie the engine is having too much air at idle,giving the wrong idle speed which the IAC valve is now trying to control, via the ECU.
    What is the voltage out of the throttle position sensor @ ign on, engine OFF, should be below 1volt. i.e. .95V
    My engine has always stopped when taking the pipe off the IAC, you need to have the live data to check what this valve is doing.
    WNJ516William Nigel Jenkins.

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