Powerlogger doesn't work in my car

[achalmersman]

I'm not saying your wrong I appreciate all input. But I put a lot of time in it today. I have always worked by the statistic that says if a problem didn't exist before, than something you did probably caused it. After several hours today of testing I am pretty confident that somehow the issue only happens when the I/O board is plugged into the power logger. It would never do it when that was unplugged. Plug that in and problem returns. Over and over. I started then taking inputs off the board tk determine if it was a sensor or just the board being connected that was causing the issue. I need just a little more time with the wideband disconnected to draw a conclusion. I'll keep you posted. If I have wastes my time and cannot find a pattern I will take a coil and or module off another TB I have. You might be right.

 

[SCOOBY DOO]

I'd try another ECM with the PL attached...and see what happens.

 

[achalmersman]

Yea I really want to. But I don't have another ECM other than the factory one. The whole reason I bought a reman unit was I didn't want to hack up my original ECM case. I may get over that worry very fast lol

 

[SCOOBY DOO]

I've had a couple of ECM's do some weird things in the past. Not saying that's what your problem is...just throwing that out there for you.

 

[Boost231]

Best of luck but my guess is its not the ecm or anything to do with the power logger. . What fuel are you running and what boost. If I missed it..

 

[achalmersman]

93 octane. Its not the fuel. Burned 1/4 tank to almost dry testing today and filled up. No effect. Running about 18 lbs boost right now. Tuned back on timing and rich on fuel until I get this figured out

 

[greeneyegi]

im going through the same issue....check this out...
http://www.turbobuick.com/forums/th...-sd2-caught-a-log-finally-please-help.414273/

my next step is to run a seperate hot wire to the 2 power wires on the computer.when i cut the factory plug at the battery and bypassed it by 12",it caused it to really run bad.so i think im on something their.

 

[achalmersman]

My ECM is not resetting. The reason I couldn't get the program to stick using PL is I was trying to do it with a 5.6 chip when I thought it was a 5.7. Read your thread though. Seems like the same frustration level! Some of those connections in Bison's post WOW!

 

[greeneyegi]

for some reason i cant download your log,it just opens my powerlogger.
on your log just your volts drop off?

 

[achalmersman]

No one or two frames everything drops to 0v with the exception of like MAP, Fuel Pressure, extras that I put in. I'm in the car right now getting ready to run again. Took the ECM apart re-cleaned the terminal with contact cleaner, plugged and unplugged PL a few times and put back together. Will report back shortly

 

[greeneyegi]

No one or two frames everything drops to 0v with the exception of like MAP, Fuel Pressure, extras that I put in. I'm in the car right now getting ready to run again. Took the ECM apart re-cleaned the terminal with contact cleaner, plugged and unplugged PL a few times and put back together. Will report back shortly

yep same issue here.

 

[achalmersman]

Not fixed. Gosh I'm getting frustrated. Going to eat some dinner and go back at it. Getting sick of beating my car to death trying to figure this out. I still have not had it do it when the I/O board was unplugged.

 

[greeneyegi]

maybe start with the board plugged on the computer without any inputs put on it.then put one at a time till you can recreate the issue.maybe narrow it down to one of the inputs or the board?

 

[achalmersman]

maybe start with the board plugged on the computer without any inputs put on it.then put one at a time till you can recreate the issue.maybe narrow it down to one of the inputs or the board?

Yea I did that. Did it I got down to only WB on the board and it still did it. Going to try again with no inputs.

I should also note that when it does it real good it sets a code 42. Sometimes a bunch of others but always at least code 42

 

[SAMBALLS1]

I chased a gremlin like that for 8 months. New parts . . . Testing it would do the same thing. .problem would come and go. . Well it ended up being a bad motor mount. . .motor would tilt under load and make contact with battery line.

 

[achalmersman]

Thanks for the idea. Just checked that. Looks good. Engine has the ole ratchet strap on the alternator bracket too. Can't get it to do it now. I give up for tonight. I've burned about 3/4 tank of fuel in 24 hrs doing just WOT blasts around a radius of about 3 miles of my shop. I'm going to install my alky nozzle and call it a night. I'd doesn't want to mess up tonight anymore so it must not want to be fixed lol

 

[buickruss]

Same problem here.
Only with the powerlogger I will get an infrequent Drop to zero. Lasts about 1 frame and then back running smooth. Tried 2 ECMs and cleaning connections, checking grounds ect. ONLY happens with the Pl connected. The Direct scan never had an issue like this. Wish I had a good solution.

 

[greeneyegi]

i sent my whole computer,powerlogger and chip to eric,he used it in his car for a few days and it was fine.put it back in mine and it was the same,it went away for a long time,then came back with a vengence.now its constant like achalmersman is.
i hope someone figures this out.ive walked away from mine for a while so i dont get to frustrated.

 

[achalmersman]

Wow. Its nice to hear people chime in on this. Wonder if there was a bad batch of components that turned into a bad batch of power logger boards. How old are your guys units? I got mine from Eric about 3 weeks ago

 

[Boost231]

I'll bet good money it's not the powerlogger. At least on the car I've been working on. It does it with or without the power logger installed. I did about everything to it. Next thing would be to direct wire the ecm power and ground. I bet that fixes the issues