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BMW 3-Series (E90 E92) Forum
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BMW N51 bouncing rpms
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| 04-26-2024, 08:18 AM | #1 |
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BMW N51 bouncing rpms
I'm trying to figure out why my RPMs keep jolting the car at idle. At first I thought it was my EGR valve (I have an N51), but after cleaning it the cars RPMs still would still bounce up and down. At this moment I am cleaning my vanos solenoids to see if this will fix the problem. Is there anything else I'm missing? Could be the PVC?
Engine codes so here they are: P0420, P0430, P0140a |
| 04-26-2024, 01:17 PM | #2 |
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Have you checked those codes already?
P0420 and P0430 are for low catalytic converters efficiency. P0140A (as described here https://www.e90post.com/forums/showthread.php?t=593036) means - Secondary air injection system, bank 1 & 2 - insufficient flow detected. Problems with mixture can cause catalytic converters errors and unsteady RPMs Last edited by kacpere90; 04-26-2024 at 01:22 PM.. |
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