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| 10-02-2025, 01:49 PM | #1 |
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Misfire and IAT error
I replaced my plugs and coils about 50 miles ago, did some hard pulls with no issues. I just started my car up and got the following errors, wondering if anyone has any ideas on what it could be
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| 10-02-2025, 02:27 PM | #2 |
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After clearing the codes, I started the car up, and there was a backfire during the start up (never happened before). It was also a rougher idle than usual (I think). I went around the block and recorded a log of a bunch of stuff. The IAT started at 72, then slowly dropped to 68 after 4 minutes of driving. (Car was in the sun).
What other tests can I do? |
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| 10-02-2025, 11:45 PM | #3 |
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Update: IAT error is gone. Misfire is in 1, 3, and 5.
Here’s a data log, would love if someone could take a look. Happy to donate a coffee or 10mm or whatever’s needed for some feedback on it |
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| 10-03-2025, 01:12 PM | #4 | |
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Quote:
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| 10-03-2025, 11:50 PM | #5 |
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Drives: 330i, 135i
Join Date: Feb 2006
Location: San Diego CA
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Did you make sure you seated the top coil connectors al the way? Check your ground straps and wiring. Make sure all is well connected?
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