DSMLink logs(caution: slow child tuning) - Page 3

1992awdlaser · 08-04-2008, 03:31 PM

Quote:

Originally Posted by LandoAWD

The only one remotely close, and I tried all but PLX when I hopped in the car, was the r1. Still about .2 low, but dang close.

Popped the hood whn I got home and it seems as though my Dodge Garage modded BOV is drawing air through the bypass nipple...don't think it was doing this before. Possible BOV issue here? Thoughts?

If you have a blow-thru setup it shouldn't cause any airflow metering problems. The gm-maf will know about the air. Obviously it should be fixed though.

LandoAWD · 08-04-2008, 03:50 PM

Indeed. Noticing a bit of surge as well. I'll either Stop-leak the SOB (from Dejon) or upgrade.

LandoAWD · 08-04-2008, 05:32 PM

Something is definitely off. Went outside and sat and logged...fuel trims are whacky.

No changes to the airflow sliders. Tell me I'm retarded, then tell me why.

1992awdlaser · 08-04-2008, 06:56 PM

It is because of your o2 voltage. Now it is almost acting like it is dead. When it is dead it will be stuck on .02 or .04 volts. Maybe it is going bad. Right now because of it the ecu is seeing lean and trying to add fuel to get the air/fuel better. The o2 voltage should bounce around between a pretty low number and .7x volts at idle and cruise.

blcknspo0ln · 08-04-2008, 11:13 PM

Well he told you why, can I tell you you're retarded?

LandoAWD · 08-05-2008, 05:48 AM

A cruise log and idle log attached from this AM.

The car now wants to idle at 1250ish (set at 1k, I think) and will cycle the O2 as long as IT is idling where IT wants to. Mentioned the surge...definite compressor surge when shifting/letting off. I want these things to be related to one problem, but it seems a couple may have cropped up at once.

Oh how I missed these things.

1992awdlaser · 08-05-2008, 06:14 AM

Do youk now what iscposition reads at idle?

LandoAWD · 08-05-2008, 06:16 AM

I'll grab it around lunchtime. I actually went out to go through scottsee's page on idle when I noticed the weirdness with the AFR and such.

LandoAWD · 08-05-2008, 10:55 AM

Startup/initial idle, then a log of how it was after a jog to the Chinese joint.

1992awdlaser · 08-05-2008, 11:18 AM

I think the first thing you need to do is test the isc motor. I am thinking that it is bad. This could be the cause of all your problems.

The reason I think the isc is bad is because you have the higher than desired idle. In order to bring that down with the biss screw it would have to be turned in. But in order to bring the iscposition closer to 30 the biss screw would have to come out. So you can see if you do one thing the other is going to get worse. I just think the isc motor is bad and it won't move like it is supposed to.

LandoAWD · 08-05-2008, 11:33 AM

Interesting. I'll try to get a resistance test done today.

LandoAWD · 08-05-2008, 04:22 PM

ISC tested out ~34ohms for each of the pin pairs. Reset the ECU to try and get it to learn idle. ISC position reading 0 still and had to up the 50hz slider 5% to get the O2 to oscillate.

Retightened couplers around MAF...noticed the RPM wire was still tapped to the CAS and pulled it.

Frustrating.

1992awdlaser · 08-05-2008, 04:53 PM

Try turning the biss screw in to move the iscposition. I skipped the second log before when the car was warmed up. So I was basing my previous statement off of the iscposition of 120 in the first log. Turning the screw in should bring the idle down and the iscposition up. Sorry I skipped the other log.

Make sure the car is warmed up with everything like radio, a/c, etc. turned off.

LandoAWD · 08-05-2008, 06:17 PM

Mod list updated. Spoke with Jon tonight...guess what components are blocked off in the TB?

FIAV and ISC.

Damnit.

.

Sooo, back to sorting cruise and WOT, then? I'll get the idle sorted with the BISS, but should I use the Simulate Idle Swithc feature?

BOV issue still present, but as mentioned, shouldn't affect this process.

Again, damnit.

1992awdlaser · 08-05-2008, 06:25 PM

Use the biss to bring your idle closer to your target idle that you have set in dsmlink. Then use the simulate idle switch feature.

LandoAWD · 08-11-2008, 10:40 AM

Again with the weirdness...

Note the STFT and LTFT in this idle log. Err, what?

blcknspo0ln · 08-11-2008, 12:29 PM

Tuning STFT/LTFT is like dealing with women, you never know what it's going to be the next day

LandoAWD · 08-11-2008, 12:31 PM

Why'd we make you a "wiseman" again?

Bastard.

1992awdlaser · 08-13-2008, 08:03 AM

Is the bov still leaking? Where it is leaking does the hose go after the maf for the source? If yes to both questions that could explain the fuel trims and the high vacuum that the boostest is showing. If not, then I would have to say this is one for the dsmlink forums.

LandoAWD · 08-13-2008, 08:04 AM

Still leaking, extra nipple vented, before the MAF.

Dave implied the same thing on the Link forums, but I haven't heard anything since reporting that the extra nipple is not (nor has it ever been) plumbed back.