mattgiroday

Hello everybody,

I'm new here, and new to the Audi scene. I just got a 2003 Audi A4 Quattro 1.8t, however I am having some mechanical issues! My engine light is on, with the codes P0300 (random/multiple cylinder misfire), P0302+P0303 (cylinder 2+3 misfire), and P0118 (engine coolant temp sensor 1 circuit high). So I looked up what to do about these errors, and found out that ignition coils were the most likely culprit as far as misfires. So I went out and got new ignition coils and spark plugs for cylinders 2+3, and a new coolant temp sensor! The misfires are still occurring, however only when the engine is cold on startup (car rumbles, engine light flashes, and I experience a loss of power), and it pretty much goes away after I give er' some gas. Any thoughts on what else could be the problem causing these misfires? Also, now every time I drive the temp sensor randomly goes up to 130 C' once, and the coolant warning comes up. Shortly after that however, the gauge goes back to 90 degrees celsius, and it doesn't happen again. I find that the gauge flares up to 130 when I am experiencing a loss of power during driving (like if I am starting to go up a hill). It is pretty random. Any thoughts on what is causing these problems? Any advice is greatly appreciated!

Thank you,

Matt

lyleswk

Misfires while cold on 2 and 3 and erratic coolant temps and sometimes under heavy load? Sounds more like a blown head. Almost identical symptoms with a 2.3 Ford turbo engine several years back...

Go back to the seller...