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    Member No: 77154 bmwr69s is an unknown quantity at this point bmwr69s's Avatar
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    rough idle when hot - 95 euro 520iT

    Have a 1995 euro 520iT M50 engine 5sp and when the car gets hot the idle gets rough. Its fine on the autobahn but if sitting at a light it idles rough and when I pull out it bucks and I have to gas it and gets the RPMs up to accelerate.

    Just replaced the O2 sensor, sparkplugs, and fuel filter. Any suggestions on what to try next? Thanks Joe

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    Re: rough idle when hot - 95 euro 520iT


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    Vacuum pipes

    Look at the rubber to see if there are any cracks. Give them a squeaze to see if they have gone a bit crusty and old. This could cause what you describe and it's a quick and easy thing to check and cheap to fix.

    Erolc1993 520i

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