P0303 code - misfire on 3rd cylinder after 52k milees

Tuan · #1 (**permalink**) 10-02-2009, 01:44 AM

After a search, i found only one other post regarding this OBDII code. It sounds like it's very uncommon. I've never seen this before in the newer cars ever since the dwell/rotor and single coil are obsolete.

I haven't had time to investigate the problem, but I will follow up after inspecting the cables and spark plugs.

niko3257 · #2 (**permalink**) 10-02-2009, 09:29 AM

Quote:

Originally Posted by Tuan

After a search, i found only one other post regarding this OBDII code. It sounds like it's very uncommon. I've never seen this before in the newer cars ever since the dwell/rotor and single coil are obsolete.

I haven't had time to investigate the problem, but I will follow up after inspecting the cables and spark plugs.

there is no cables. just coils over plugs.
change your plugs and see what happens first.
if it still happens you have a bad coil.

Krizz · #3 (**permalink**) 10-02-2009, 07:41 PM

You might want to read through this thread

Constant speed "stutter"

If I recall, they don't ever post the actual code, but it does turn out to be the coils causing misfiring and stutters, if you can make it to page 4.

A number of people seem to be having the problem, not sure, but I think they all were GD owners.

Good luck

EDIT - Bernardi is showing slightly different part #'s for the GD's & the GE's coils, also, the GE's have an insulator added, I wonder if heat was the cause of the coil problems in the GD's?