i've been searching the forum, but i can't seem to find a fix for p0300 ( random misfire). is there a fix, and if so, would someone please post.

 

I think my car had that problem before I bought it. There's a sticker under my hood telling me that the car had been reflashed by Mits, I guess to solve that problem. If I'm wrong....please someone correct me.

 

good luck, there are a million threads on this. My 03 had this and it is really, really, really annoying. Pick up a C Reader off rom ebay and plug it into your OBII port-this helps a lot. Go to VISHNU.com and he sells them there as well.

There is a recall from Mitsu on this, I believe. If your car is under warranty or stock, talk to them.

Good luck it is a horrible problem. It made me trade my 8 for a 9.

 

I forgot to mention, my problem became much worse after installing an ACT Lightened Flywheel and Exedy clutch. I do not know why.

 

sorry to burst your bubble, but the 9's have this problem too. mine just started it about 5k miles ago. now it happens about once a week. light comes on, stays on for a day or so, goes off. no idea why.

 

You need to diagnose why youre getting a random misfire. There isn't one single solution for any given cel code. Try to find a friend or a friend of a friend with a solus and vantage.

 

i believe the mitsu had a recall on this. they reflashed the ecus.

if you go to aktivematrix's download section, you can find a rom that the dealer flashed in a customer's car to fix the p0300 error, then with ecuflash and a tactrix cable, you can reflash your ecu yourself to fix it.

don't forget to copy your fuel/timing/boost maps if your ecu has already been reflashed.

 

If its any help I took my evo to the stealership to get reflashed. The reflash erases your flash if you have one. I simply took my car to ams afterwards and got reflashed. No problems since. GOOD luck.

 

Dealer flash. Went from getting the CEL once a week to once a year after the dealer reflash.

 

hope this sheds some light on the problem....

https://www.evolutionm.net/forums/sh...d.php?t=321822

 

SO been to the dealer and i they said it should have fixed it but, on the way back home same code!!! i cant find a way to get it off but to drive the car like a 80 year old!!! any another ideas??

 

Okay I have also received a P0300 error on my 03 evo and i was wondering if there is a universal fix or a rom i can DL that allows me to rid the ecu of p0300 errors