04 redline v6 awd MISFIRE!!!!

[justin302]

I have 40k on the engine and got codes that idication multiple missfires!!!! I read one thread with someone who had about the same problem. My 04 still runs fine, it threw the code when I passed someone at 75mph. I was wondering if anyone has had the problem and what has saturn done to fix it.????

[ssicarman]

What are the codes? Any other codes? With the codes erased can you get them to come back?

[Bigdaddy94sc2]

There are many things that can cause it..... Is it codes for misfires on every cylinder? Car run fine now?

God I hate getting these..... PITA to find it quickly.....

[justin302]

It is the p300(multiple misfire) p301 p305 for cylender 1'n 5. The car runs perfect. And yes it has done this code 3 times for me. I clear it every time and it still pops up. It does it when I floor it and it shifts into another gear, not every time just here and there.

[ssicarman]

Have you checked the coils and plugs for cylinders 1 and 5?

[myoung]

The PCM needs a calibration, take it to the dealer and they will get it together.

[Bigdaddy94sc2]

Or possibly the PCM replaced and terminals fixed....

[justin302]

Somehow I cannot believe it is the coils or plugs. I will lean to the pcm update. Now someone mentioned a bad connection on the pcm is this common??? It just seems like you would feel something in the performance of there was a bad connection. It runs to consitant. Thanks for the help though. Will the dealer charge for a re program or re flash of the pcm???

[justin302]

Well just today I hit about 97mph without realizing it (california freeways are easy to lay your foot into it when there is no traffic) and I tried to step on it again, well it turns out the engine light flashed at me again (i'm guessing that you can only go 100 mph or slower???). I plugged my scanner in and got the identical engine missfire codes as last time. So the other times I get the same codes the computer must be screwing up thinking i'm going too fast or some rpm protector????

[bigc791]

Or possibly the PCM replaced and terminals fixed....
Agreed. I have seen 3 early build 3.5 with that issue.
Carmen

[D C]

When was your VUE built? What month/year?

[justin302]

05/04. I was just interesting that I got the exact 3 codes when I tried to breech the 100mph limit. These are the EXACT same 3 codes it has tossed at me on much lower mph occasions, but at high rpm's.