Me too. That doesn't sound like a "miss"

 

My car has 11,000 miles on it no mods that would have anything to do with engine performance just a turbo timer, K&N drop-in, Tein high tech springs and thats about it. They are now thinking it's something with the crank trigger. I also informed them that I've contacted a lawyer and if they don't get it this time I will begin the lemon law process. The service manger was actually quite cool about it, he said that he understands and will get the work orders together for me to send to mitsubishi as a record of them making a reasonable attempt to fix it.

 

you could also ask the service manager to get the district manager involved. When my car was going through pretty much tthe same thing (dealer not able to fix), I asked the service manager to contact his district manager. 2 or 3 days later my car was fixed for good.

 

man that sucks...

 

i m tellin u...mitsubishi should change its name to mitsubi****

 

No need for all that man.. Every car manf has stories like these.

 

I have this fault also...please post if a solution is found....it has been mentioned elsewhere on this forum this is a problem is with the ECU...the infamous "300 code" manifesting itself again, sit tight, I think Mitsubishi will issue a recall for this....

 

What about taking it to another dealer?

 

They have involved the regional rep. I know the p0300 is a common problem for these cars and the dealer says that they have seen that code in several Evo's. They also said that my missfire is alot more severe than what they have seen in other cars. It is also not a random thing that happens on occasion. It happens every time you accelerate in third and fourth gear @4,000 rpm. Every time. It just started doing it one day about a month ago and hasn't stopped since. It really concerns me that they have no idea where it is coming from. They have talked to tech line, the regional rep, and the engineers in california. I would like to think if it were a soon to be recall issue they would be able to give the dealer some guidance.

 

i went through a simular situation recently.. my transfer case went and they tried telling me that i had mess with it and i was like hell no!!!! the car had 2500 miles on it.... they told me they couldn't aprove it that the DM had too... i told them i would wait 4 either the DM to come down now or call and i wanted to speak with him.... about 2 hrs later they came back and the DM said to replace it..... they put mine in yesterday... and the car is running better than when i bought it...... the TC was in pieces...........

 

If you bought the call new then you are nearing the terms for filling a lemon law. I went through a similiar problem with a c5. Stayed in 2 different shops for 8 month period and never resolved. You can file with the national highway safety administration, they can help with lemon laws. Plus tha carry data on all cars with problems, recalls etc. Document everything, 100% important to you're case. Document what was done, how many days it was in the shop. Document all conversations, that would be important to you're case. Best of luck as it is diffictult when you file the lemon law as the dealers will be very reluctant to give you a new vehicle without proper documentation.
Hope the best for you




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I had the exact same problem. Misfire when under WOT or any throttle when the rpms got too high and I can tell you misfire causes a fuel cut, but feels completely different than just a fuel cut. Misfire is waaaay rougher and the car coughs and sputters afterwards. Turns out my fuel pressure regulator vacuum line came off causing my fuel pressure to drop under throttle. Put the vacuum line back on. No more misfire (big surprise) but I was still getting fuel cut at 4000 rpm (hence why I said there is a big difference in the feeling). This was more like hitting the rev limiter but not actually getting to it. Turns out the aftermarket fuel pump I had in there drew too much current and fried my fuel pump control unit, which I will be replacing on Monday. I pretty much debugged this problem myself with the help of the subaru Tech's wiring diagrams and step by step instructions. Because I did a lot of it myself they didn't charge me for labor Just 150 for the controller. Hell I even showed the tech that his multimeter was bad by comparing it with my fluke and he was like "i'll be damned my multimeter is bad." The only thing I really lacked in figuring out the problem myself was the manual that told you which pins to test for a bad fuel pump controller and the tolerances of the resistances you should be getting. It was the floating ground from the controller to the pump itself. It had a variable resistor on it that should be getting over a megaohm and I was only reading 6.6kiloohms (fried like a kfc). BTW it took me about a week to figure this out. Luckily the car was still drivable if you stayed outta the throttle.

Check your fuel pressure and make sure it isn't dropping. If it is then you have your problem. Of course there are many causes for misfire this is just another one I thought I would add to the table.

 

They are now looking at spark plugs and coilpaks. Seems rather elemetry but, I would think that would've been where to start. I'm going to die laughing if it's a coil and they have replaced the turbo and a bunch of other stuff and all it was is a bad coil they should've noticed from the start.

 

When they replaced the turbo, you shoulda slipped a T3/T4 in there...

 

I had a similar problem in my eclipse. there was a small hole in one of the spark plug wires so when enough energy went through the wire (higher RPM), it started grounding itself at the engine block instead of the plug, causing a misfire. Low RPM it worked fine. It acted just as you described.

BTW You are right, if the first thing they replaced was the turbo (which has inspection criteria for god's sake) rather than troubleshooting the basics (fuel, spark, air) I have no pity for them.