What's up everybody, I've been trying to deal with a lot of the problems with my 2000 Acura 3.2tl for a while now. I have had misfires upon misfires since early last year to the point that in about October of 2007, Acura stated that my transmission had a new extended warranty, so they replaced my transmission. Just last week now, I'm driving my car, and it starts to shake severely. So i brought it and replaced my spark plugs, did an oil change, and have been filling up with premium gas. The code at Auto Zone is P0303 which states

P0303 - Cylinder 3 Misfire
Cause may be: ignition system plug, ignition system wire, ignition system coil
Vacuum Leak
Injector Fault
High low fuel pressure

I have no idea what to do...should I just take it back to the dealer...only thing the Acura in Philadelphia serviced my car and I'm in Jersey right now.


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I kind of had similar problem just yesterday. the light came on. I did the diagnostics and found 4 codes P0300, P0303, P0306 and P1399. Started by changing all the spark plugs since I have not done that since the car had 65K (now 164K). Once I did that all of the codes except one, P1399, disappeared. Checked all of the coils by unplugging them one by one while engine was running. Come to find out that there was no reaction when I disconnected the wire on 3rd cylinder. Drove the car this morning and did diagnostics again. This time code P1399 went away and P0303 reappeared. Bought new coil, replaced it and the car runs fine at least for now.

2003 Acura TL type-s