Causes cylinder misfire

you felt it or the OBD2 told you?
or both, ?
this a engine swap? 2000 Acura TL Mini?

misfires hot, or cold engine, or both,
in gear or not,idling, slow, fast or hills only, or all time?

check that the HT leads are separated and not touching each other. The misfire may be simply the spark being inducted into the plug with the least resistance and is random and that is what is setting off the light.

Or just spark plugs or wires. Or Distributor/ignition. check the cheap things first. Also, replace your fuel filter.

the P0301 means Cylinder 1 Misfire Detected, and the P0303 means Cylinder 3 Misfire Detected. I think have known how to fix the problems after you knew where is the problem.

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mini vci for toyota tis

This is strange. The tcs is a traction controll error. If you are getting misfire codes and traction control warnings, then I would have your control module tested to make sure it is not having intermittent power issues to each component.

Instead of the auto-zone trip , take it to the dealer !

More likely the ignition control module than coil hence the codes.

Regards

Lloyd Six

Check the wiring. to Coil, plugs, Crank Positioning Sensor. check to see if the wire is in good condition sometimes if wire is checked, in poor condition it will allow bleed through especially when the wires get hot. This is why it will often start when engine cools down and why it shuts off when your sitting cause it heats the wires up there is not the cool air running accross the wires when sitting. Good Luck and a grt day. Would appreciat 4 thumbs up if this was helpful.

See if your car has an ignition control module. They will go bad over time and cause random engine misfiring. Just went thru it with my 2002 Buick LeSabre. 120,000 miles on the engine. Replaced plugs, plug wires and check the coils. It was the ICM.

My TL would do the same, crank, crank, crank, give it gas, crank, etc, then finally, after everyone was looking at me like i was crazy, it would eventually start.
I noticed that strangely enough during this time, I filled up w/ regular gas at the same Exxon 3 times n a row, instead of going to shell like i normally do. (I used regular from shell or chevron in mine for 8 years & never a problem) Oddly enough,it would drive ok, kinda rough, for a short time then, i would walk out a store & it wouldn't start. I would give it gas while I was crankn it sometimes even until a cylinder would misfire & make that pop. when it would finally idle, just barely enough for me to put it n drive, i would step on it to keep it going. I even rode around for a week with that scanner hooked up to my car & the only code that EVER came up was cylinder misfire & only if i had to get on it & make it misfire. I put that fuel injector in my gas tank every time i filled up for about a month after the exxon fill ups & went back to shell & put plus instead of regular. We checkd the fuel pump, fine, the fuel filter, doesnt have one.
I have been fortunate to not have it happen since then but, I did some research on it & found that it could also be that the valve that controls the emissions, it would sometimes get stuck & not open/close properly thereby causing the engine to not be able to receive or give off the correct amount of air flow & therefore it wouldnt turnover to start until i would force it by giving it gas or making it misfire, or waiting a while for it to cool off.
Also, check out ur air compressor & make sure its not starting to go out. turn off the ac & see if it still sounds like ****. if it sounds better when its off then the fact that its going out causes it to pull more on the engine in order to keep it going. This could be why its running rough, like feels like its having trouble shifting in 3rd & 4th gears.
Just some advice I found helpful when I had the issue, dont know if its the cause of ur issue but, i thought I would let u know.....
I hope this helps ..... good luck!