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P0300 Screenshots

Car-specific questions and tuning advice for the Lancer Evolutions. EVO 8 and 9 mostly, but earlier models welcome.

Re: P0300 Screenshots

Postby honki24 » Wed Jul 16, 2008 7:59 am

The idle one is the normal one for me that I have a trouble getting rid of. The cruise one: Try looking at the timing in your rom in the cruise area. Try smoothing it out some. Your code was at 45* timing advance. I had the same thing once. I smoothed out the timing in that area (basically raised all the low timing cells) and got better cruise plus no more cruise P0300. May give that a shot.
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Re: P0300 Screenshots

Postby Deepnine » Wed Jul 16, 2008 10:31 am

First testing showed the problem is gone. Had only one hour for driving, but i it comes back i'll tell you.
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Re: P0300 Screenshots

Postby Deepnine » Thu Jul 17, 2008 7:22 am

After a long trip at night, the problem came back.
Locks like fuel cut to me, but i don't know why.

Any ideas?
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Re: P0300 Screenshots

Postby honki24 » Thu Jul 17, 2008 11:29 am

Fuel cut? That's a whole nother ball game. You may get a P0300 if you hit fuel cut... but that shouldn't surprise you. If you're getting fuel cut on a lancer though... you're doing something wrong. :mrgreen:
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Re: P0300 Screenshots

Postby Deepnine » Thu Jul 17, 2008 12:01 pm

There shouldn't be a fuel cut, ist none to light load. A a smal honda makes more power at the time it always happens. Injector DC is about 11%, there is nothing to cut for safty.

But i have no explanation.
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Re: P0300 Screenshots

Postby honki24 » Thu Jul 17, 2008 7:58 pm

lol, sorry brah... I don't think I can help on so little data.
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Re: P0300 Screenshots

Postby Deepnine » Thu Jul 17, 2008 8:25 pm

Your right!
Logfile:
http://www.eclipse-ig.de/users/andel/ecu/20080717.ecd

Problems:
716 sec to 732 sec
916 sec to 975 sec
Look at injector pulse width.

Car:
Like stock stock stock 2G, with 95er ecu and 14b turbo.

I have lots of log files, with this problem.
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Re: P0300 Screenshots

Postby honki24 » Fri Jul 18, 2008 11:10 am

Waaaiiit waaiiit wait. Now I see. I was previously confused by 2 things: Your Avatar, and your posting in DSM and EVO threads. I had just assumed you owned one of each (def. not uncommon). I don't understand DSMs nearly well at all. My expertise lies in the EVO. Sorry man, my suggestions are very ROM based. Like I say everywhere, I use the ECU+ for tuning and extra features, but not the actual fuel and timing tuning. I flash my ECU for that. I wouldn't begin to know how to approach your problems by only using the ECU+. Just not enough control. Sorry man, thought this was for a lancer.
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Re: P0300 Screenshots

Postby Deepnine » Fri Jul 18, 2008 7:55 pm

Sorry to confuse you.
I own a dsm, with the knowhow of an evo.I just don't like the design of evos, so i build my perfect solution bewteen evo and dsm. I'm familiar with both, but more dsm.
I think the ecu's of dsm and evo are not that different. Evo is just more evolved. :D
Fuel and timing its also done with the flash (evo) or eprom (dsm). Differend procedure same result.
I'm switching parts all time. Actually i'm playing with ecu and dsm ecu's on stock engine.

I think the problem must come from the ecu, maybe from a failure sensor input or caused by ecu+ (i don't thing so).

On dsm this behavior shouldn't be possible, when you ingore the ecu+.

What would you say, if this happend to an evo?
I think there might be some security feature, i don't understand.

Sorry for my bad english, is a long time ago i learnd it in school. Understanding is quite good, but writing is a horror for me. :D
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Re: P0300 Screenshots

Postby KevOVIII » Sat Jul 19, 2008 1:48 pm

Your English is pretty good! :)

Well, I've been sending Tom logs of my drives for him to analyze. I've looked at the log of where I think the P0300 triggers the CEL light but couldn't find anything out of the ordinary.
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Re: P0300 Screenshots

Postby honki24 » Sat Jul 19, 2008 3:17 pm

Well if it were a lancer I'd say your boost cut is too low or your ecu is reading false load (ie you are altering MAS HZ via ECU+ too high (rich)) so the ECU thinks you are at a load that you really are not at. If it thinks that then it will trigger fuel cut because it only knows boost by load, it doesn't actually have an OE MAP sensor. If you're using the ECU+ to add fuel, try lowering your settings and see if that stops the fuel cut. Or if you have the ability to disable or raise the fuel cut parameter in the ECU itself, then do that.

That was pretty good english imo too.
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