Engine cut out at 10PSI - Log Included

[lacroixdp]

I just took my car for a spin after putting in another ECU to see if mine is bad. I also stuck on new wires and new plugs gapped at .28. Last week, the car was missing under boost - it was doing all right today until this log below. I got what I'm guessing is fuel cut, but my O2 readings don't look right to me and I could use a second set of eyes. I'm sorry - my logging choices for this test run is admittedly crap and I forgot to log my injector duty. I've only had the car just shy of a month, so mods are light - definitely nothing aggressive. Thanks to all who can assist!

 

[spyderturbo007]

Do you have a bigger version of that log? It's really hard to read. Also, what logging program are you using?

 

[lacroixdp]

Sure do - here it is! I was using MMCd 1.5d but I just learned of 1.8g and installed it a few minutes ago. If I need to do another run with better logging with the newer version I can go do that. Thanks!

 

[DSM_PWR]

It looks like your not at 100% Throttle?

Have you checked the obvious like
*Boost leaks
*Vacuum Leaks

What kind of plugs did you use? And what kind of boost?

 

[lacroixdp]

Did a boost leak test a few weeks ago and Saturday while I was installing my exhaust - vacuum lines are not leaking, although some are starting to crack. I'm going to replace all of them next weekend. I'm using NGKs - I don't have the box handy to tell you the model number off the top of my head. I'm only running 10lb of boost at the moment. You know, I noticed my throttle is a little odd too. It reads 10.98 idling in place. The throttle pedal is also a little sticky. I think it may need adjusted - it doesn't feel like I'm ever getting WOT.

 

[DSM_PWR]

Try doing another pull with full throttle, it says your TPS signal isnt going all the way 100..

 

[lacroixdp]

Will do - I'll go romp on it real quick

 

[jrohner]

Don't log the useless stuff, it just makes it harder to read and wastes samples updating stuff we don't need to see. I don't know about the others here, but I prefer a copy/paste to here over the screenshot that ends up way too small. Your pdf would be ok if you rotated it and got rid of the extra stuff.

 

[jrohner]

I'm assuming COOL is coolant temp, why is only 26 degrees?

 

[lacroixdp]

Here's my run up and down the street - I did 3 pulls at WOT, at least according to my pedal. Obviously it's lying to me, since 10% is idle and I can't go much above 70% It didn't do the engine cut this run though. jrohner, next time I'll cut the unneeded stuff so I get faster refreshes. I'm not sure why it's saying 26 degrees... my gauge is a touch left to the middle and on the reader it said 192F when I checked it.

 

[spyderturbo007]

You'll want to find out what's going on with the coolant temp provided the car was warmed up when you made your log. Also, ~10 TPS reading at idle is correct for a 1g, but you are having issues when going WOT. It should read ~100%, so that's the next thing that needs fixed.

When tuning WOT, log RPM, IDC, timing, knock and front O2 only (O2-R when dealing with MMcd). That will maximize the number of samples per second and make tuning much easier.

 

[lacroixdp]

Will do - thank you very much! I'll fix my WOT and try her again!