Hello everyone, I am currently having an issue with the v70 that I have as the car idles roughly as I took a closer look into the problem after replacing the oil trap and hoses the go through out the car from the oil trap itself. I reset the check engine light to see if I can get a P code from the car if it finds any issues and to see where the problem may lie. To give a rough estimation of what the rough idle look like to help get me an insight here is a youtube video of what the car is doing either at cold start up or even at temp.

 

If there are no vacuum leaks, I would clean the throttle. It may need replacement though

 

for sure that I would clean the throttle to make sure and looking around for vacuum leaks if I see any obvious signs. now for the error codes that are given to me

Pending Codes

P0300 Random/Multiple Cylinder Misfires Detected

P1133 O2 Sensor Heating Circ.,Bank 1+2-Sensor1 Electrical Malfunction

End of Pending codes

Stored Codes

P0137 O2 Sensor Circuit Low Voltage Bank 1 Sensor 2

End of Stored Codes

I check all of the coils as I unplugged each one individually to see as it would affect the engine. all of the coils that I unplugged did in fact affect the engine performance while idling. I removed the MAF sensor plug to see if it affected the performance as it did as well.

I am really confounded at this issue atm and any help would be appreciated!

 

I finally figured out the issue as the Breather Hose and the MAF Sensor was completely gone and non existent and while I was at it to have the Timing Belt and tensioner pulley since the last time was covered in oil shortening it's life and I hope this will help out a lot of people on getting the rough idle issue and random misfire's done and delt with.