Hello all-

This has been a mystery for me(P0300 code), I'm hoping you can help me figure this out, here is some backstory..

The symptoms were the usual, a stutter when accelerating, low power. So I thought maybe one of coils went bad, so I went to pull the coils and the ignition coil connectors for cylinders 1&2 practically fell apart in my hand. So I rewired the coil connectors with new plugs, and everything worked fine for 1 day. When I did redid the coil connectors I also switched out the Plugs and coils(just in case).

Now today, it is starting to stutter when accelerating again. To be more specific it stutters between around 30-70 mph. Another thing, If I drive through the stutter and get the car to ~80mph and drive it steady at that speed for a few seconds, the stutter stops completely; even if I come to a complete stop and accelerate back up it has no issues at all for the remainder of its use.

Here's a little side issue that I'm not sure if their connected. For a few months now, When I start the car after its been off awhile, and say jump on the highway. The temperature gauge on my dash will shoot over to H, and tell me I have low coolant; when in fact my coolant tank is full. There's never any smoke, or signs that its overheating. The gauge just goes to H than comes back to the center and the low coolant warning goes away; this last all of ~10 seconds.

Any insight as to what my issue may be would be greatly appreciated!

Thanks.

 

bump......

 

any insight?

 

????? plzz

 

I found this thread that might provide some other items to look into. Sorry, haven't had this issue or even really seen anyone posting about it recently. If you do get it sorted please report back just incase anyone else (me for example ) ended up having a similar issue.

p0300 code - AudiWorld Forums