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The BMW Range
5 Series
E39
E39 engine mis-firing
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<blockquote data-quote="huskar3399" data-source="post: 593516" data-attributes="member: 25472"><p>aduh my car now kena the misfiring simptons already. steering vibrates when idling, and check engine light illuminates. it started to happen after i replaced the vanos seal but i dont think they're interrelated. diagnosis result reads errors as "fuel trim" and "misfiring". misfiring is deletable but fuel trim is not. mechanics presume "pressure regulating valve" (item no 1) as the culprit.</p><p></p><p>[ATTACH]23629[/ATTACH]</p><p></p><p>i made some reading through several bmw forums, they recommend first to check the MAF and get it cleaned if it dirty and replace it if faulty. i plan to do that first and if the vibration simptom still persists then i plan to replace all 6 ignition coils at once.</p></blockquote><p></p>
[QUOTE="huskar3399, post: 593516, member: 25472"] aduh my car now kena the misfiring simptons already. steering vibrates when idling, and check engine light illuminates. it started to happen after i replaced the vanos seal but i dont think they're interrelated. diagnosis result reads errors as "fuel trim" and "misfiring". misfiring is deletable but fuel trim is not. mechanics presume "pressure regulating valve" (item no 1) as the culprit. [ATTACH=CONFIG]23629[/ATTACH] i made some reading through several bmw forums, they recommend first to check the MAF and get it cleaned if it dirty and replace it if faulty. i plan to do that first and if the vibration simptom still persists then i plan to replace all 6 ignition coils at once. [/QUOTE]
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