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#1
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P030X errors misfires after plugs and coils replaced
There was oil on the 4th plug, looks like Valve Cover gasket issue, have ordered it, but thinking should I replace with the Aluminum after market? After replacing cold started the car, lots of vibrations, could smell gas as well, getting all kinds of random misfires across all the cylinders. Got an XDrive and DSC failure, limp mode. Have parked the car back. What do you folks think is the issue here? Plugs and/or coils not installed properly? Thanks
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2008 E70 X5 3.0si Sport | Prem | Adaptive Drive | Tech. | Cold Wthr | Rear Climate | 3rd Row | Running Boards | iPod/USB 2019 G30 530e Sport | Adaptive | Drv. Assist+ | HK | HOV Access 2018 F83 M4 Comp. | Exec | DCT | First M Car 2009 E93 335i (Sold) Sport | Prem | 19" 230 | Logic 7 | iPod/USB | Sat | HD Radio | Comfort Access | Heated Seats | Pure Joy E36 328is GoKart (Sold) Manual | HK | Trip Comp. | 17" Rims |
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#2
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P030X errors misfires after plugs and coils replaced
Clear codes, set up hidden menu find the submenu with voltage and monitor real-time. When you start getting random error on multiple modules the first thing to check is stable voltage.
Do you have a BMW capable scanner so you can check the body modules. Usually if voltage fluctuation you'll get a handful of modules pissed off and will throw a low voltage code. Also: if you do get a code on a particular cylinder swap coils with a different that's not a direct neighbor clear codes and try again. I think you said you got new coils but you could have gotten a defective one. New often ≠ fixed.
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
#3
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Quote:
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2008 E70 X5 3.0si Sport | Prem | Adaptive Drive | Tech. | Cold Wthr | Rear Climate | 3rd Row | Running Boards | iPod/USB 2019 G30 530e Sport | Adaptive | Drv. Assist+ | HK | HOV Access 2018 F83 M4 Comp. | Exec | DCT | First M Car 2009 E93 335i (Sold) Sport | Prem | 19" 230 | Logic 7 | iPod/USB | Sat | HD Radio | Comfort Access | Heated Seats | Pure Joy E36 328is GoKart (Sold) Manual | HK | Trip Comp. | 17" Rims |
#4
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Get live voltage reading it should be 14.6 ± .3. Get car started and drive around the block after clearing codes. Did battery for from non use or was it a surprise?
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
#5
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Yesterday when I tried driving the car it immediately went on limp mode and threw 4x4 and DSC malfunction errors on the screen. I was barely able to get it back into the garage. No chance of risking driving till I am able to resolve the cold start vibrations issue. Was pulling out the new coils to put back the old ones to see if the errors dissapear, but looks like the new coils vacuum sealed on to the spark plugs, was very difficult to get them out, broke 2 of the latches in the process. Last one is still stuck all the way in the back. If it doesn't come out will replace the rest and try starting the engine. Might be easier to take it out on a slightly warm motor.
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2008 E70 X5 3.0si Sport | Prem | Adaptive Drive | Tech. | Cold Wthr | Rear Climate | 3rd Row | Running Boards | iPod/USB 2019 G30 530e Sport | Adaptive | Drv. Assist+ | HK | HOV Access 2018 F83 M4 Comp. | Exec | DCT | First M Car 2009 E93 335i (Sold) Sport | Prem | 19" 230 | Logic 7 | iPod/USB | Sat | HD Radio | Comfort Access | Heated Seats | Pure Joy E36 328is GoKart (Sold) Manual | HK | Trip Comp. | 17" Rims |
#6
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What are your fuel trims??
Where did you get the plugs and coils from? are these EXACT oe replacements??? not 'better performance'? there are tons of counterfeits...and some of the higher performance plugs will NOT work. Yes they fit. Yes companies sell them... |
#7
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I seem to catch the fake/defective ones often, same happened to one of the plugs I got from FCP for the M4, got replacements from Amazon which worked. But I still feel the car is not as smooth as with the original plugs. I checked the gaps and they were all correct measurements.
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2008 E70 X5 3.0si Sport | Prem | Adaptive Drive | Tech. | Cold Wthr | Rear Climate | 3rd Row | Running Boards | iPod/USB 2019 G30 530e Sport | Adaptive | Drv. Assist+ | HK | HOV Access 2018 F83 M4 Comp. | Exec | DCT | First M Car 2009 E93 335i (Sold) Sport | Prem | 19" 230 | Logic 7 | iPod/USB | Sat | HD Radio | Comfort Access | Heated Seats | Pure Joy E36 328is GoKart (Sold) Manual | HK | Trip Comp. | 17" Rims |
#8
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'08 X5 4.8i - 176k '15 i3 - 85k '98 323is - 169k - Garaged '94 325i - 208k - Sold |
#9
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Still running like hell at start? Or did swap of coils help? Clears codes and what comes back
Sent from my iPhone using Tapatalk Pro
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
#10
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I did lose one of the engine cover bolts in there somewhere and found a cap like thing after putting back everything. Does the PCV valve have a plastic cap like thing on it?
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2008 E70 X5 3.0si Sport | Prem | Adaptive Drive | Tech. | Cold Wthr | Rear Climate | 3rd Row | Running Boards | iPod/USB 2019 G30 530e Sport | Adaptive | Drv. Assist+ | HK | HOV Access 2018 F83 M4 Comp. | Exec | DCT | First M Car 2009 E93 335i (Sold) Sport | Prem | 19" 230 | Logic 7 | iPod/USB | Sat | HD Radio | Comfort Access | Heated Seats | Pure Joy E36 328is GoKart (Sold) Manual | HK | Trip Comp. | 17" Rims |
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ignition coils, p0300, p030x, spark plugs |
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