Firefire in cylinder four / random misfires

Hi. You have misfires on cylinders 4, 5 and 6. If there are no faults on cylinder 1, 2 and 3 then I would check the power to the left bank injectors. Also check spark plugs and ht leads. If there are running issues then this should be an easy fix. If the faults are very intermitant then it can be a bit tricky to isolate.

go to you tube and see if they have a video of this problem , put in search box your problem and out you tube on the end and it will take you to the video you need

My car was doing this and I had to get all new coil packs... Mine were replaced under recall at the dealership at no cost. If you take each code and google it, or even check a VW forum, I'm sure the members there can provide a lot more thorough information...... I have a 2001.5 Passat myself and when one thing goes out they all follow suit. I will help with some research for you and post back...... But I'd check the coil packs that sit atop the spark plugs.

Compression check may tell you something.

could be time for a tune up also check the spark plug holes for oil if the valve cover gasket are leaking into there can also have a bad coil if the check engine light is on have it scanned at a auto parts store (most do it for free)the code can lead you to the bad cylinder exp code p0301 is cylinder number one p0306 is cylinder number six and the same for p0302-p035

it:s possible if need more parts wil replace, but my diagno.this problem with trans. ATF. low level .as what i understand from you complain

Try the crank pisition sensor that is vary likely to be the couse of your misfires its working but its intermintly shorting out telling the pcm that you have a misfire and setting the codes

Check the spark plug for that cylinder, the wire and coil. Also check for any vacuum leaks around that cylinder. See my "How To" on finding a vacuum leak.

replace both and also check for a loose ecm ground

Pop the heed, see the air box on the very left? On top of that box is the Ignition Control Unit. Little black square w/ winds about 1/2"
thick....

That is the problem. Or Your MAF sensor...
I don't know how to chech the Ignition Control Unit with out the proper tester.

But the MAF is located directly below in side the box.
If you POP off the large hose that comes out of the front of the air box. You can see the MAF, spreay it some contact cleaner for electronics not BREAK CLEANER>>>>>>.

Regards