7060 works V.4 not V.5, Help read log-fix Bucking !

4x4poor · Post by **4x4poor** » Tue Feb 22, 2011 12:48 pm

I am using Moates extreme aldl and a 1993 K3500, truck will connect to T.P.RT and will give a data dump of all the info but will not stream live. I need to log to try and find the culprit for the truck bucking badly once warmed up and in closed loop. Especially from a stop. like all fuel is being lost but if I run the truck in forced open loop it will run decent albeit rich but does not buck and such. Have tried everything to remedy the issue and nothing worked

4x4poor · Post by **4x4poor** » Tue Feb 22, 2011 12:52 pm

I am using V5 and the only ADS available from moates for the 7060, Proper bin and def... Any help would be appreciated as the truck is down for weeks now. And at 3.60/gal 5 mpg aint good. thats no travel trailer or car trailer, just the vehicle unladen

Six_Shooter · Post by **Six_Shooter** » Tue Feb 22, 2011 2:46 pm

Currently I use V4 to log the '7060.

I was out on Sunday tuning a friend's 1971 Cutlass that uses a 7060 ECM. (Custom 4 bbl throttle body as well.

)

I will work on getting V5 to connect, but haven't had time yet. Getting a dump of data is more than I could get with V5 for some reason.

V4 with the ADS available from the downloads page works just fine though.

4x4poor · Post by **4x4poor** » Wed Feb 23, 2011 6:03 am

From the download page here or at moates? I couldn't find a download from here for the $85 def. I got it from moates site and it didn't ave any guages set up in it so I copied the guage code from another persons file and pasted it into my file. How could I find a previous version to download?

Six_Shooter · Post by **Six_Shooter** » Wed Feb 23, 2011 10:38 am

I must have got it from moates.

4x4poor · Post by **4x4poor** » Fri Feb 25, 2011 6:53 am

Thanks. I erased T.P.RT V5 and installed V4.??? and VOILA. Works. Now to find someone who can interpret the data. Interested?. May start a new thread for that. Thanks again. and lemme know if you get V5 to work on the 7060

Anyone else interested in helping me figure this out. Truck runs fine cold/open loop, warms up idles fine but starts Bucking as soon as I take off from a stop. If I pin it it will pick up and go but bucking comes back as soon as I reengage throttle. From looking at the log it seems as if the bucking begins right before EGR is engaged. Also EGR shuts down when I floor it which would lead me to believe faulty EGR possibly, but I have unplugger vac from it and same exact problem still. All sensors check out fiine but I noticed final saref (timing advance) drops down as well during problem. Possible the EGR has something to do with timing being retarded through knock sensor?

http://download970.mediafire.com/wrdryt ... 1stlog.csv

4x4poor · Post by **4x4poor** » Sat Feb 26, 2011 3:28 pm

Someone has to have seen this that is able to help. Please help if you are a tuning expert

EagleMark · Post by **EagleMark** » Mon Feb 28, 2011 12:43 pm

I'm not an expert but I will try to help.

Are you the same guy that posted on thirdgen? Looks the same!

Looks like the data is correct but your vacuum is low, like 13 inches at idle and should be closer to 19. The O2 sensor is seeing the same thing, the data shows very rich at the O2.

Is the motor stock? If so you need to look for a vacuum leak, make sure the hose to MAP sensor is conected to port on rear of the TBI. Maybe check vacuum there and elsewhere. Look for a vacuum leak or a stuck open EGR valve. This has to be fixed for anything to work correctly. It may even be a bad MAP sensor but highly unlikely as they are very robust and hardly ever fail. HTH

4x4poor · Post by **4x4poor** » Mon Feb 28, 2011 1:48 pm

would a vac leak show rich at o2 during idle, or lean?

EagleMark · Post by **EagleMark** » Mon Feb 28, 2011 2:52 pm

Rich at idle and that's what your O2 sensor is reading. It's going max (I forget what max is) but just over 1 volt.

Your kpa idle vacuum is in 40s which tranlates to about 13 inches of mercury. Stock cammed engine should be 19-20. So the ECM sees a load and adds fuel. O2 sensor sees rich and wants to take away fuel... your ECM is having a nervous breakdown!

Like I said I am no expert but I do know nothing is going to be right unless you find this issue.

EagleMark · Post by **EagleMark** » Mon Feb 28, 2011 3:19 pm

Look at line 4003 of your log. Your warmed up there. You have been idling a while. 725 to 750 RPM good voltage like 13.6 Manifold vacuum 46.52 = 13.7 inches of vacuum (low)
You got a vacuum leak! Or a big cam! Or a bad MAP sensor. I don't see any glitches so it's not itermitent.

Your entire log in general says the same thing.

4x4poor · Post by **4x4poor** » Tue Mar 01, 2011 6:12 am

I don't think there is a vac leak, tried to find one yesterday but no go. What I still dont understand is why the timing is being pulled out around what seems to be the same time the EGR is being commanded on to around 35% duty cycle. seems as though the egr signal from the pcm is jumping to the esc circuit and causing it to pull timing without just cause. I know it seems far fetched but this whole scenario is. Especially since the same problem occurs with the knock sensor unplugged whick does give me a cel. how would I go about tricking the computer into still seeing the dizzy if I through a mechanical dizzy in there? Possible? without running in open loop full time?