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Feels like something is knocking?
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| 06-18-2015, 02:55 AM | #1 | |
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Feels like something is knocking?
Hello everyone, just wanted to if anyone can figure this out before I take it into a shop. The other day I ran the car on map 5, was getting maybe 11-14psi. The can ran great, had no problems with it at all. After 6 pulls, I went home and drove about 60 miles. Last night I try to run the car and when I went to shift into 3rd with the shift light coming on, the car felt like it was misfiring. After that the check engine light came on, I tried to clear it and it didn't work. This morning I didn't drive it to work, took the train and when I got home from work.. Tried to clear the codes and on the cold start. The car started to vibrate really hard and felt as if there was knock.. I tried to drive it up the block and when going into gear, I had to give it more gas than normal.
Do you think it's a coil pack issue? I changed that less than 40k miles ago.. Or maybe it's one of the injectors? I would post a video of the codes but the car hasn't ran long enough for the codes to read. 07 335i Coupe with 138k miles
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| 06-18-2015, 11:20 AM | #2 | |
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| 06-18-2015, 11:31 AM | #3 |
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You need a better code reader, they should be stored.
Otherwise, I'd pull the plugs and look at them first. It doesn't sound like just 1 plug or 1 coil, the car should run with 1 cylinder down. So it may be something like a fuel pump perhaps. You can try pulling the spark plugs and seeing what they look like for starters, IE fouled with fuel |
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| 06-18-2015, 02:23 PM | #5 |
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Maybe the OCc is clogged and causing the issue.
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| 06-18-2015, 10:59 PM | #6 |
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Pull the coilpacks one at a time with the engine running to determine which cylinder is suspect. Then move that coilpack to a different cylinder to diagnose whether it's a bad coilpack or something else.
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| 06-18-2015, 11:53 PM | #7 |
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If you have jb4 just plug the USB into your computer and read the code, see what it is and if it's a missfire move the coil pack, if the miss fire changes to a different bank then you have a bad coil, happened to when I installed jb4..
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| 06-20-2015, 11:33 PM | #8 |
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I would not change anything until you can read the codes.
A JB4/Cobb will read the codes for you.
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