e90 rough idle issue

vye90n52 · 11-05-2024, 09:19 PM

I got a 2011 n52 bmw 328xi. Recently i noticed when im in d and my foot on the brake the car start intermittently shake every 5 minute or so and the rpm jump from 600 down to 500 and back to 600. I changed all the spark plugs and coils and it didnt fix it. Any ideas as to what cause this ? Thank you in advance

BashShah · Yesterday, 05:16 PM

when your tank is near empty, then go to Chevon and put half or full tank of their best with Techron. It will clean your injectors and ports since your car is naturally aspirated.

let us know what happens after finishing the tank.
Run it at high rpm for a bit for, high spirted driving will help.

11-05-2024, 09:19 PM	#1
vye90n52 Registered 0 Rep 1 Posts Drives: BMW 328xi 2011 Join Date: Nov 2024 Location: Colorado iTrader: (0)	e90 rough idle issue I got a 2011 n52 bmw 328xi. Recently i noticed when im in d and my foot on the brake the car start intermittently shake every 5 minute or so and the rpm jump from 600 down to 500 and back to 600. I changed all the spark plugs and coils and it didnt fix it. Any ideas as to what cause this ? Thank you in advance
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Yesterday, 05:16 PM	#2
BashShah Colonel 311 Rep 2,017 Posts Drives: 2012 335i Sedan Join Date: Oct 2012 Location: Vancouver, Canada iTrader: (0)	when your tank is near empty, then go to Chevon and put half or full tank of their best with Techron. It will clean your injectors and ports since your car is naturally aspirated. let us know what happens after finishing the tank. Run it at high rpm for a bit for, high spirted driving will help.
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