BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST
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N20 rough idle after start up
| 04-12-2023, 06:21 PM | #23 |
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New Member
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Rep 5
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BMW rough idle when warm
Hi can you help me
I have BMW 520I n20 2016 with 90km (56k miles) The car runs rough when it get warm only and engine will start to misfire I need to rise the rpm to 2500 then the car will run smooth but still the car will have jerking at low speed. scanned the car with ista 2 codes appear (102001 air mass, air mass to high) &(118401 mixture control fuel mixture too lean, large deviation) change spark plugs & air mass flow sensor with bosh & turbo inlet pipe. after changing the mass air flow sensor car run smooth for around 4 days. |
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| 08-31-2023, 10:52 AM | #24 |
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Shawnpeebles _17
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Rep 1
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Rough idle on restart on stop start only
I am having a very similar issue as the original poster. Except mine only happens when it restarts on the stop/start at like a stop light and only lasts about 2 seconds. No codes are thrown, BMW Service center saw no codes. Does not happen on cold starts or like the original poster discussed. What could be the possible cause?
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