Q: Misfire, loss of power, CEL comes on... Replacing ignition coils did not fix

asked by on October 17, 2016

My BMW is running very rough, misfires often, idles rough, extreme loss of power, acceleration, etc. Took to the "BMW Repair Shop" and had the walnut blast done, but opted to replace the spark plugs (Bosch plugs) and ignition coils myself. New Coil Stamp V 8647689-01 0 221504 470 16-07-05 F 01033 BOSCH ALL CEM 01

Old Coil Stamp V 7562744 80-02 0 221504 470 06-09-13 D 04860 BOSCH ALL CEM 01

The old coil has a different bottom end.

Did I use the right coils? Could the be something else wrong?

My car has 91500 miles.
My car has an automatic transmission.

Check Engine Light is on Inspection $79.99 - $89.99 Get a Quote
Loss of power Inspection $79.99 - $89.99 Get a Quote

Hello. The numbers you have provided did not yield any results through my search. If the part numbers are different, and the ends are physically different, then they may very well be different coils or it may just be an updated design. I would verify with a parts specialist or BMW dealership if the parts are compatible or not. Also, keep in mind that it may be possible that the coil packs are not the source of the issue. If the Check Engine Light is on I would scan the trouble codes as they may help shed some light on if the coils are the issue or not. A certified professional from YourMechanic can come to your car’s location to diagnose the Check Engine Light and loss of power in order to make the correct repairs.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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

What others are asking

O2 Sensors

As you may know the oxygen sensors, which are part of your emissions system, read exhaust gases to determine whether or not the appropriate amount of oxygen is present in the exhaust. Based upon this reading, this information is relayed...

problem starting engine

Hello there, thank you for asking about your 2011 BMW X5. This may be a variety of potential issues but most likely related to a fuel delivery problem. Try checking idle air control module which regulates the air flow intake...

High idling, jumping while idling, idle air control valve code

Hi there. This can be caused by the issues that you mentioned or a number of other things. You need to make sure all of the connectors are making good contact. I would then need to know what codes are...

P0171 & P0174

These two trouble codes are both related to the oxygen sensors located after the catalytic converter detecting that your vehicle is running lean. There could be a fuel pressure problem, vacuum leak, a vacuum hose left unplugged, an intake air...

problem starting engine

Hello there, thank you for asking about your 2011 BMW X5. This may be a variety of potential issues but most likely related to a fuel delivery problem. Try checking idle air control module which regulates the air flow intake...

Gascap warning on 2007 Caravan

For the first issue, the gas cap will need to be replaced sometimes. I had a 2009 Dodge Charger that this happened to also. It's not something you can control. As for the second issue, it seems like it is...

Every time I turn my steering wheel left, my BMW ABS light flashes and the car stutters and loses all power

Hi, thanks for writing in. Your car ABS system is equipped with wheel speed sensors which monitor wheel speed and relays this information to the computer which tells the ABS system how to react when the car is out of...

while driving at speed above 40mph i feel humming sound from real which die down on appling break.

Thanks for writing in about your Hyundai Santa Fe. From what you've described, it sounds like it may be from the rear wheel bearings. When the rear brakes are applied, the brakes will quiet the noise down. Have a mechanic,...

Engine light coming on

The diagnosis by another place may be correct, however, the Check Engine Light can go on for many reasons. If you'd like to have a second opinion on the Engine Light or have this service done for you, consider YourMechanic....

Related articles

P0563 OBD-II Trouble Code: System Voltage High
P0563 code means a voltage reading is out of the normal range due to a faulty alternator or starter, battery, voltage regulator, or wiring issues.
P2247 OBD-II Trouble Code: Oxygen Sensor Reference Voltage Circuit Open - Bank 2 Sensor 1
P2247 P2247 code definition The P2247 diagnostic trouble code is an indication that there is a problem with the bank 2 sensor 1 oxygen (O2) sensor reference voltage circuit. Related Trouble Codes: P2243 OBD-II Trouble Code: O2 Sensor Ref...
P0446 OBD-II Trouble Code: Evaporative Emission Control System Vent Control Circuit Malfunction
P0446 code definition P0446 is an OBD2 diagnostic trouble code that indicates a fault within the evaporative emission control system. Other EVAP...