2002 Volkswagen Jetta 1.8t

[1mean85gt]

I’m working on a Volkswagen Jetta 1.8t. I am having a hell of a time figuring out where to go with this thing. Vehicle ran fine while driving and the randomly threw a flashing CEL. vehicle was towed to my house where I scanned and pulled codes. Codes are as followed.

16486-MAF low input
16684-random/multiple misfire
16685-cylinder 1 misfire
16686-cylinder 2 misfire
16687-cylinder 3 misfire
16688-cylinder 4 misfire
17704-cooling system malfunction
17522-bank one sensor two resistance two high
17763-cylinder one ignition circuit open circuit
17584-02 correction behind catalyst limit attained
P0351-ignition cylinder 1 malfunction

I have switched MAF,replaced the down stream o2 sensor. Swapped out coil number one with a replacement. I’ve also replaced the pcv valve and inspected for vacuum leaks. There were none that I could see or hear.
Is there anyone here who is any good with these things? I am out of my skill set with this one and any help would be appreciated. Thanks for reading all of this.

[Siegel1719]

How does the timing belt look?

[Beigg]

Does it drink coolant or is low on coolant?

[1mean85gt]

How does the timing belt look?

I believe you have to take off the valve cover to get to the timing chain. I haven’t looked at it yet but was getting ready to

[1mean85gt]

Does it drink coolant or is low on coolant?

Coolant level is fine. None in the oil or on the ground

[Siegel1719]

Sorry your right I was confusing 2.0 with 1.8.