Random Misfire 0300: Dealership reflash available...
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From: California
Originally Posted by RaysurX
Ok.
08/12/04 (Dated so that I can update as needed)
Got the Mitsu reflash last Saturday. Since then, I've put on about 300 miles and today after driving to work and while idling to cool down.... I get the ugly glowing light shining in my dash again.... argh. BTW. Bone stock car.
I won't know for sure what the code is until I get it pulled..... but I've only been getting PO300's...
Secret Chimp... I went to xxxxxxx Mitsu too.... I guess I need to call Doug or Matt to see what happens next.
Love the car and the service at the dealer... but my faith in the quality and response by CORP MITSU is dwindling...
08/14/04 (Saturday) 10:00am- Update
SES code was the 300 code again.
Tech re-flashed it again and we took it for a test drive to try to replicate the SES again. No luck Gonna give it another try... if I get it again.... I was told Mitsu would be called and we would go to the next step to try to troubleshoot. Everytime I have gottent the 300, I have NOT noticed any hesitation while driving as described by some others....
Will update my post like this as more develops....
2nd update of the day
08/14/04 (Saturday)4:00pm
No more than 8 hrs after the re-flash..... again the SES light pops on.
Again... bone stock car. Normal (not extreme) driving style.
More as it develops.
08/12/04 (Dated so that I can update as needed)
Got the Mitsu reflash last Saturday. Since then, I've put on about 300 miles and today after driving to work and while idling to cool down.... I get the ugly glowing light shining in my dash again.... argh. BTW. Bone stock car.
I won't know for sure what the code is until I get it pulled..... but I've only been getting PO300's...
Secret Chimp... I went to xxxxxxx Mitsu too.... I guess I need to call Doug or Matt to see what happens next.
Love the car and the service at the dealer... but my faith in the quality and response by CORP MITSU is dwindling...
08/14/04 (Saturday) 10:00am- Update
SES code was the 300 code again.
Tech re-flashed it again and we took it for a test drive to try to replicate the SES again. No luck Gonna give it another try... if I get it again.... I was told Mitsu would be called and we would go to the next step to try to troubleshoot. Everytime I have gottent the 300, I have NOT noticed any hesitation while driving as described by some others....
Will update my post like this as more develops....
2nd update of the day
08/14/04 (Saturday)4:00pm
No more than 8 hrs after the re-flash..... again the SES light pops on.
Again... bone stock car. Normal (not extreme) driving style.
More as it develops.
Spoke to Service Manager at dealer.... Trying to arrange a Mitsu rep to take a look at my car. More later.
Last edited by RaysurX; Aug 16, 2004 at 07:00 PM.
Update. After 4K miles, with one long 16hour drive and lotsa city driving, I am still SES light free! 
.
Thanks to the Evo god my car is performing like (I think a normal;>=) car should be, again.
.Thanks to the Evo god my car is performing like (I think a normal;>=) car should be, again.
Originally Posted by EVOeight
I kept getting the P0302 no matter how many times I reset the ECU. It would come on within 50 miles after a reset. After researching the issue for several days, I came to the conclusion that I had the "sticky injectors" from using cheap *** octane booster. I added something to my gas tank and have not had the check engine light since. That was about 1500 miles ago so it seems to be fixed. I will post what I put in my gas tank after I am sure the check engine light is gone for good.
I am wondering if the P0300 is really the same "sticky injector" issue but just with multiple cylinders...
I am wondering if the P0300 is really the same "sticky injector" issue but just with multiple cylinders...
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Joined: May 2003
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I noticed after one tank full of gas with my "additive" that I had WAY more power, since the P0302 pulls tons of ignition timing. It idles and runs like new now. I am really starting to think that maybe all of the P0300 codes are the "sticky injector" issue and not driveline harmonics. Has anyone had the dealer reflash correct the issue permanently or does the code come back after a while?
I have gotten the flash from Mitsu and have not thrown the code since. It's been about 3 weeks now, and it's my daily driver. I put on anywhere from 10-50 miles per day, with variable driving conditions. I looked at my invoice from the flash but it did not have the milage indicated.
With that being said, the car did stumble badly once in third while accelerating, but it did not throw the code, for what that's worth.
Just a side note-
I have also thrown the PO335 and PO340 codes a couple times in recent weeks too, but not since the flash. The techs found nothing wrong in relation to these codes.
With that being said, the car did stumble badly once in third while accelerating, but it did not throw the code, for what that's worth.
Just a side note-
I have also thrown the PO335 and PO340 codes a couple times in recent weeks too, but not since the flash. The techs found nothing wrong in relation to these codes.
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From: Between the Blue and the Sand
Originally Posted by RaysurX
Ok.
Secret Chimp... I went to xxxxxxx Mitsu too.... I guess I need to call Doug or Matt to see what happens next.
Love the car and the service at the dealer... but my faith in the quality and response by CORP MITSU is dwindling...
Secret Chimp... I went to xxxxxxx Mitsu too.... I guess I need to call Doug or Matt to see what happens next.
Love the car and the service at the dealer... but my faith in the quality and response by CORP MITSU is dwindling...
And you can't sell the car to rid yourself of the problem! You won't get a smog cert with the SES light turned on. There is no selling a car when you know there are defects.
My situation is handed off to the lawyers at this point.
SC~
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From: Between the Blue and the Sand
Originally Posted by EVOeight
I am really starting to think that maybe all of the P0300 codes are the "sticky injector" issue and not driveline harmonics. Has anyone had the dealer reflash correct the issue permanently or does the code come back after a while?
SC~
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Joined: Jun 2004
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From: Minneapolis, MN
Okay-
Here is one for you. I drove the car from Jacksonville, FL to Chicago, IL. SES light on the whole way, the car stumbled and bucked, and just ran like s***. Then it sat for three days, no driving. I turned it on for a final drive from Chicago to Minneapolis, and the SES light was off. No hesitation issues, no light, nothing...The light had never gone off by itself before for me, has anyone had an experience like this...I am at a loss for words.
-Fritz
Here is one for you. I drove the car from Jacksonville, FL to Chicago, IL. SES light on the whole way, the car stumbled and bucked, and just ran like s***. Then it sat for three days, no driving. I turned it on for a final drive from Chicago to Minneapolis, and the SES light was off. No hesitation issues, no light, nothing...The light had never gone off by itself before for me, has anyone had an experience like this...I am at a loss for words.
-Fritz
Fritz, yeah the light goes off after you cycle the ignition 4 times or so (I can't remember how many it takes). Just hang in there I'm sure it'll be back. =/
The only reason the light didn't go off before was because the thing was misfiring before that Nth ignition cycle.
The only reason the light didn't go off before was because the thing was misfiring before that Nth ignition cycle.
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Originally Posted by Secret Chimp
I have had new injectors installed by my dealer. The light stayed off for about 250 miles...then came back with a vengance. So I know the issue is not injector related in all cases.
SC~
SC~
EVOeight, it's been proven that there's some 'play' in one of the transmission shafts that causes this issue. That's why Mitsu released the ECU reflash, which I now believe simply included a higher threshhold for knock at that particular frequency. The sticky injectors are not "not" a problem however. That's actually the 2nd step for troubleshooting this issue if the reflash doesn't work.
Unfortunately for most of us having this problem, NEITHER solution works.
Unfortunately for most of us having this problem, NEITHER solution works.
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From: California
Originally Posted by webguy330i
EVOeight, it's been proven that there's some 'play' in one of the transmission shafts that causes this issue. That's why Mitsu released the ECU reflash, which I now believe simply included a higher threshhold for knock at that particular frequency. (snip)
Is this also referred to as a "walking crank" or is this a completely seperate issue?
^ no no completely different problem. That's apparently not an issue on the Evo. This has to do with a particular shaft (I want to say input shaft but I'm not positive) which develops play over time due to wear. It's different for every car (depends on driver, car usage, factory machining, etc.). This is why I believe not everyone has or will experience this issue in particular.
Also I should note that this is just what I've gathered from months of research and a few good ears at Mitsubishi dealerships.
Also I should note that this is just what I've gathered from months of research and a few good ears at Mitsubishi dealerships.