04-02-2019, 06:09 PM | #1 |
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Rough Idle almost stalling. Any recommendations?
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04-02-2019, 10:31 PM | #2 |
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The first step is to find out if there're any codes thrown. Get yourself F series diagnosis / coding software + cable. Helps to narrow down rather than groping in the dark and being at the mercies of dealer / mechanic.
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04-03-2019, 07:17 AM | #4 | |
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04-03-2019, 10:28 AM | #6 |
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Thanks I forgot to mention that I already used my code reader, and the only codes were for the check engine light that the downpipes throw since I dont have cats anymore. I've been leaning towards spark plugs and im hoping its either that or the coil packs. I remember in my E63 M6 that around the 40k mile oil change they did a spark plug change as well but not sure if they do the same thing for the X6M as im due for an oil change as well.
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12-31-2019, 06:11 PM | #7 |
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Any updates? What is the actually issue?
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07-01-2020, 02:59 PM | #9 |
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Lol...it's like your midway into a good read and all of a sudden blank pages
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07-01-2020, 05:41 PM | #10 | |
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07-01-2020, 05:57 PM | #11 | ||
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07-02-2020, 07:11 AM | #13 | |||
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Coils on my other BMWs last 150k miles. The tips of the plug are obviously in a brutal environment of heat and high compression explosions. Coils have it easy and simply snap on to top of plug. Nowhere near as harsh an environ and I believe their duty cycle is quite long unless a defect shows up. |
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07-02-2020, 09:41 AM | #14 |
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I thought so too, but everyone I've spoken to say that even when their trucks were stock, it was stalling. So I'm out of ideas.
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07-02-2020, 09:05 PM | #15 |
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07-02-2020, 09:08 PM | #16 |
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Right sorry. I worded it weirdly. People with the stock trucks got it checked by dealers and nothing was wrong with injectors.
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07-03-2020, 07:21 AM | #17 |
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With a decent scan tool there is an easy process to isolate a problem cylinder. You simply deactivate the injectors one at a time, and if the idle doesn't change, you found the culprit. As you turn injectors off, the engine should shake. No shake means it's already off/impaired and you found the problem.
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03-16-2021, 07:56 AM | #18 |
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Reviving this thread to say a buddy of mine switched to catless downpipes and the car started stalling. He coded out cold start and it fixed the issue.
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03-16-2021, 11:01 AM | #19 |
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Battery? Edit oh I see the above, I remem there being issues with new F85s and catless dps @ idle. Think most ECU flashes correct this.
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10-27-2021, 07:34 AM | #20 | |
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Car hasn't felt consistent since I installed intake really. When it's good it feels more responsive then stock but other times I go for gas it just seems to hesitate. Also I've seen some people say s63 doesn't have MAF only n63. If that's the case what are the 2 sensors on each side of intake tubes? getbmwparts calls it an air mass sensor considering trying to clean those. |
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