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Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: BMW
Satisfied Customers: 3950
Experience:  Owner at Carolina Auto Service & Sales , 20 years Experience in Foreign & Domestic vehicles
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2011 BMW 328i xDrive with 3.0 misfires in cylinder #2 with

Customer Question

2011 BMW 328i xDrive with 3.0 misfires in cylinder #2 with the A/C on. Coils, plugs and pressure differential sensor have been replaced. The instant the A/C shuts off the car returns to normal.
Submitted: 1 year ago via
Category: BMW
Customer: replied 1 year ago.
Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Expert:  Chad Farhat replied 1 year ago.
Hi my name is ***** ***** I will be assisting you todayAfter changing the coil,plugs etc...did you run another scan on it and where there any fault codes left, or you just getting #2 cylinder misfire only?Let me know , I believe I know what your issue is here? But I need to check few things for me ?
Expert:  Chad Farhat replied 1 year ago.
I got a message to call you , is that what you want a phone call?
Customer: replied 1 year ago.
Couldn't clear #2 misfire until I drove the car for a bit.
Expert:  Chad Farhat replied 1 year ago.
How many miles please ?
Customer: replied 1 year ago.
It said it was permanent so I was going to clear it after I drove it for a bit.
Customer: replied 1 year ago.
What do you need me to check?
Customer: replied 1 year ago.
79K miles
Expert:  Chad Farhat replied 1 year ago.
If you have changed the #2 coil &. Plug and you still misfiring , what you need to check next is you FUEL INJECTOR CIRCUIT OR THE FUEL INJECTOR ITSELF IS BAD . If you have a capable scanner I can help you figure it out , I need one that can pull up O2 sensor data and I want to read me the fuel trims , do you have access to one ?
You are either getting to much fuel or very little fuel , or we have a vacuum leak ?
Let me know
Expert:  Chad Farhat replied 1 year ago.
May ask also if the coils where bought from dealer or Orem brand or it is after market coils?Thank You
Chad ( aka - Jhook1398 )
Customer: replied 1 year ago.
Not a vacuum leak. How would it only happen with the AC In and it doesn't happen right away. I could have the AC on for 20 minutes before it acts up and it stops the second I shut the AC off.
Customer: replied 1 year ago.
All Bosch parts
Customer: replied 1 year ago.
No scanner here
Expert:  Chad Farhat replied 1 year ago.
You said no vacuum leak , what are you basing this on please ?
Customer: replied 1 year ago.
If I had a vacuum leak the car would act up all the time especially when cold.
Expert:  Chad Farhat replied 1 year ago.
Not nesscesarly , but you are the expert I guess .good luck . I will opt out .
Customer: replied 1 year ago.
Probably best
Customer: replied 1 year ago.
Refund this site is useless.