O2 doesn't appear to be cycling...

I also see some DTCs in there.

Is your MAF unplugged? MILs for IAT, Baro, and Vol Airflow circuit would help explain poor running. They are all static in the log display.

Your coolant and IntTemp are also registering -74 degrees. Your throttle position is showing a static 100%?

MAF is plugged in, yeah.

Something is not right electrically. Is everything plugged back into the ECU properly?

The car absolutely will not come close to running right with the airflow circuit like that. Gotta fix that first.

Why cant I see the log? I have DSMlink

I can't look at the log right now. But from the other posts I would say you have a blown sensor ground.

blownsensorground [ECMTuning - wiki]

That's the first thing that came to mind for me, but it seems unusual that the values are different. And this would be kind of surprising if it was just installed after coming back from ECMlink - assuming they did the socketing and testing.

The coolant and intake temps are a constant -74, which is similar since they're both the same value. The o2 value is 5V which seems to fit.

I'd at least double check so you could possibly rule it out.
blownsensorground [ECMTuning - wiki]

But the car in stock form will run very rich. If you just install DSMlink/ECMlink on a stock car (not tuned), it will most likely run around 9.8:1.

Yeah I figured. But the weird thing is I went ahead and put back the stock ECU I had until I figured out what was wrong, and its STILL running extremely rich/bad.

Now I have a problem




Update
Basically, I bought ECMlink for monitoring. Yes, I DO want to tune with it LATER on, but for now I'd like for it to just run nice. A friend of mine installed ECMlink about 2 months ago and he is COMPLETELY STOCK, T-25 and everything and he had no problems at all when he swapped his old ECU for a V3 ECMlink. Ran like it always did, all he did was add the rev limiter and anti-lag. So it really surprised me when I put in the ECU and all of a sudden the car runs horribly. Even when I put back the default ECU it had. It was socketed and everything from ECMTuning Inc.

Don't really know what else to do, and I can't get access to the forums till tomorrow when I get the chip number (left the car at my shop cause it was running so bad, didn't want to risk driving it).

Also, another thing I did forget to mention, the car WILL NOT START with the ECMlink ECU on anymore. It only starts up with the original ECU that I had first, and still runs really bad/rich.

Did you open up the EPROM to check it out yet?

nope, haven't done that. I'll check it out tomorrow first thing in the morning at the shop.

Just came back from the shop. EPROM/Chip is fine.

Chrispy, I just sent you a PM!

PIMking said:

Why cant I see the log? I have DSMlink

Click to expand...

You need ECMLink to view the logs- different format.

ECMTuning, Inc.


Don't worry, you're not missing much. Intake temps are -74*f, Coolant temps are -74*f, MAF is 0.0 Hz, Front o2 reads constant 5 volts, and Throttle Position stays a constant 100%. I'm lost, for sure.

?

I actually just took my car to a friend who supposable tunes pretty good (he usually uses SAFC) looked at my car and said he wasn't touching it when he saw the log/what it was doing. He told me the solution was buying SAFC.. . Pointless really cause even with the stock ECU in, it runs bad.

Am I in a lost cause situation? :s

Chrispy0530 said:

Am I in a lost cause situation? :s

Click to expand...

No based on what the other guys are saying, you broke something. Did you change anything else at the same time as you put the new ECU in?

Chrispy0530 said:

Am I in a lost cause situation? :s

Click to expand...

No, you simply need to read that link that Snowborder714 posted above. Compare the info within that link to the information I posted from your log:

ECMLink: "A blown sensor ground trace will be evident in datalogs. It will result in -40F intake and coolant temp readings, 100% TPS, an unusually high Baro reading (like 37 inHg) and O2 voltages greater than 1V. The car will also most likely not even start."

Jus: "Intake temps are -74*f, Coolant temps are -74*f, MAF is 0.0 Hz, Front o2 reads constant 5 volts, and Throttle Position stays a constant 100%"

Notice a pattern here?

Chrispy0530 said:

?

I actually just took my car to a friend who supposable tunes pretty good (he usually uses SAFC) looked at my car and said he wasn't touching it when he saw the log/what it was doing. He told me the solution was buying SAFC.. . Pointless really cause even with the stock ECU in, it runs bad.

Am I in a lost cause situation? :s

Click to expand...

I don't think its a lost cause - unless you have a seriously blown engine - which based on the various readings probably is not the case.

Did you actually open up BOTH ECUs to physically verify that he sensor grounds are not blown?

Even if not, as others have said there is clearly something not working right (probably electrical and involving one or several sensors in the air/fuel sensor systems). As a result the ECU(s) are not and will never be able to properly manage the engine until that is solved. No amount of tuning with DSMLINK will do it, nor changing to AEM and an SAFC (a piggyback system with far more limited range of tuning capabilities than either DSMLINK or AEM) certainly will not.

I wish I could be more helpful actually diagnosing the specific problem(s) but I'm as sure as I can be the underlying issue is not DSMLINK in and of itself.

You also really need to consider an FPR, even with the 190 although it sounds like thats not really the main problem(s).

See you Sunday at the meet.

As steve asked, did you touch ANYTHING when you installed ECMlink? Either install bolt on parts or wire something in (maybe clutch cut wire)?

I would do a few things. You should go over your whole engine bay and make sure all electrical connections are seated properly, including the MAF. If you can post a picture of the EPROM board, that might be helpful. If the car won't start anymore with the EPROM, it's sounding more like the sensor ground.

I sent Tom an e-mail to see if he has any suggestions.

I'll post a picture once I get to the shop.

I did however get 3 codes,

-P0110 IAT Sensor Circuit Malfunction
-P0100 MAF or VAF A Circuit Malfunction
-MAP/Baro Circuit Malfunction

But the thing is, if my ground sensor is infact blown, then it's pretty much BOTH my ECU's. Both ECU's make my car run bad. The only difference now is that I can get the car started with the non-chip ECU but runs bad, and I can't get it started at all with the chipped one.

Something has blown sensor ground. And whatever it is probably blew sensor ground when you re-installed the stock ECU too. So now it's running poorly. The symptoms are simply too coincidental to ignore. You have to fix whatever is blowing sensor ground. Wiring in a wideband kit powered off sensor ground, for example. would do it. I'll echo the same question posted above...what else changed between the last time the car ran normally and the time you installed the ECMLink ECU? Surely something else changed.

Thomas Dorris

Chrispy0530 said:

I did however get 3 codes

Click to expand...

Yeah, all those codes are related to the same basic problem. When sensor ground blows, ALL voltage references made by the ECU are screwed up. The ECU is just really confused now because everything looks messed up to it.

To fix that blown sensor ground, you'll need to either *carefully* patch the blown trace yourself or send it to someone to do for you. We'll certainly do it here free of charge if you want to send it in. Just contact me offline to arrange. [email protected]

EDIT: Oh, I suppose it's also possible that the sensor ground wire is simply disconnected or otherwise broken off the ECU harness. Might want to check that too if the ECUs really appear to be fine internally. More information, including what to look for and which wire to check can be found here.

blownsensorground [ECMTuning - wiki]

Thomas Dorris

Thanks,

I'll go ahead and check everything again. But the only thing I have done to the car in the past couple days is install a AEM UEGO wideband. Not currently installed to the ECU yet, but going to do it today.

Chrispy0530 said:

But the only thing I have done to the car in the past couple days is install a AEM UEGO wideband.

Click to expand...

Please check where you have pulled your ground reference from for this installation.

Thomas Dorris

Okay, solved the electrical issue. Pretty much pegs at every RPM.


Now for another log.