Q: Car shaking after Coil and Spark plug change

asked by on

I had multiple misfires on my BMW, codes were for MAF, and Cylinders. I changed all these this things, including all Ignition Coils, Spark plugs and MAF, it ran perfectly for a day. Then when I turned on the car this morning, it barely would crank up, kept shutting off, and had a bad shake. It was not doing shaking this bad before I changed everything. I don't know what else to do....

Hi Kevin. OBD-II error codes don’t always tell the entire story or provide the exact reason for an engine misfire. In fact, most error codes have 5 to 10 possible sources, which can be misread or assumed is a specific component. For example, the P-0300 OBD-II code has 18 possible sources that can cause a random misfire. One of the best resources we have on our site are a series of OBD-II trouble code articles, like this one for example, where car owners with some technical knowledge and understanding on repair issues can read possible causes and repair solutions. You can review them by clicking on the advice tab and selecting the articles and questions section. Type in the error codes you are receiving and you’ll likely find some good tips. If you don’t have access to this information, have a professional mobile mechanic come to your location to complete a check engine light inspection.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Car shaking after Coil and Spark plug change

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Car shutting off in the middle of driving

Hello. The first thing that I would suggest that you do is have an inspection of the electrical charging system completed. It is possible that the alternator is working intermittently. There are brushes inside of the alternator that conduct electricity....

Q: My car needs service..but I don't know where to start. My brake light is on..but i just did the brakes 2months ago and my engine l

You should have the computer and ABS systems scanned for codes to get an idea of the problem you may be having and then a repair can be made. If you want a mechanic like one from YourMechanic to come...

Q: My dash board don't work my front light work when I change my light into high beam and my back window won't go down

As unfortunate as it is, your vehicle would be considered flood damaged. Diagnosing electrical problems in a flood damaged vehicle is nearly impossible. This would take many hours or even days to determine which wiring harnesses and circuits have been...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.