986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post

FFourie · 02-19-2018, 10:48 PM

Hi,
I am driving a `99 Boxster 2.5.
This car has lately developed a misfire only when the car idles at working temperature.When the car is cold there is no misfire and when driving the car the engine runs smoothly. The engine management light remains on .
The fault codes indicate that the three cylinders on bank 1 all misfire I have replaced the lambda sensor on bank 1 but the problem persists

Any suggestions what causes the rough idling and how to address the problem?

02-19-2018, 10:48 PM	#1
FFourie Registered User Join Date: Aug 2012 Location: CapeTown ZA Posts: 9	Misfire on one bank only Hi, I am driving a `99 Boxster 2.5. This car has lately developed a misfire only when the car idles at working temperature.When the car is cold there is no misfire and when driving the car the engine runs smoothly. The engine management light remains on . The fault codes indicate that the three cylinders on bank 1 all misfire I have replaced the lambda sensor on bank 1 but the problem persists Any suggestions what causes the rough idling and how to address the problem?