Project Winter Beater

[123abc]

Time for a weekly pic update...

http://www.mitsustyle.com/photopost/data/627/medium/SDC11538.JPG

http://www.mitsustyle.com/photopost/data/627/medium/SDC11539.JPG

Took it bombing around on some of the gravel roads here. I've learned that I have a lot to learn about how to control an AWD car on gravel. It sure is a ton of fun though...

[turbotalon1g]

Very nice beater.

[123abc]

Very nice beater.

Why, thank you. It looks decent from about 10-20 feet away. lol

[123abc]

The car has developed what feels like fuel cut at about 4k. Drives around perfect until I start going more than 50% throttle and the boost goes above 12 psi.

I've checked:

-Plugs
-Mafs
-fuel system for leaks
-Boost leaks (none)

On my datalogger the only thing that looks fishy to me is the injector duty cycles go from 20-30% all the way to 80 something percent right before it cuts out.

As of right now, I want to say the pump might be taking a crap? It's an evo 9 unit that I replaced in the winter time a couple weeks before swapping motors.

[123abc]

So I think I've found the problem. I took the cop setup off a few days back to inspect things and ever since it's been on like 3 cylinders. Well I took the cop back off today to check the plugs, put it back on and it ran fine till i touched the gas again. Then it was missing. I took the cop off and sure enough, one of the wires were pulled out of the stock plug on the cop side of things.

I crimped it so it's hardwired for now to get me to work. When I get to work, I'll solder it up until I find a stock plug again.

[123abc]

Well it drove fine on the way to work but still cut out under load. Pulled it inside the shop right away and soldered the 3 wires up. Pulled it out of the garage and it was back to missing again. On my lunch break I took it home and would only run right if it was between 2500 and 4k. Anywhere else in the rpm range and it would be on 3 cylinders.

I know for sure the number one cylinder isn't firing for whatever reason because I can cut the number one injector on my datalogger and it doesn't change the 3 cylinder running. I'm waiting for some motivation to hit me today and get my ass outside to mess with it some more. I have a stock coil pack and wires I picked up from Twack, just waiting for said motivation...

[4g63tcrazy]

Yeah I didn't like my COP when I had it on my car. It looks sexy, but performs poorly. I'm sure the stock ignition setup will fix all your issues.

[123abc]

Yeah I didn't like my COP when I had it on my car. It looks sexy, but performs poorly. I'm sure the stock ignition setup will fix all your issues.

Mine's been great for the last 2 or so years. I don't understand why it has started giving me problems now.

[123abc]

Having the stock coil pack and good wires on it (Thanks Twack) got it back to driving status but not full on boosting yet. Still fuel cuts after I changed out the sock on the pump with a brand new one in hopes I don't have to change the pump. Also checked the mafs and it seems to be in good working order. I read with those if you tap them with a screw driver at idle they shouldn't change readings at all, but a bad one will. Having the screen off the 3 in. gm maf wouldn't be causing this, right?

It's acting like it's running out of fuel before the injectors though. IDC's shoot way up from 65% way up to 115% on one of my pulls right before fuel cut. That's how my Laser acted before I put the evo9 pump in.

[123abc]

So I've now replaced all 4 injector plugs with newer ones off a 420a and still no difference. What I don't understand is I'm getting 11.7 v on both wires that go to the injectors. Shouldn't I get 12 + on one wire and the other is a ground that the ecu operates?


I'm going to swap my evo 9 pump back in and also re-wire it and see if that helps. I'm seriously out of ideas. I really want to run it this weekend at the autocross.