oneslowz28 01-26-2006, 10:10 PM ok first off i went into the garage and read my pcm with tuner cats and then came inside to work on the tune. well after working on it some and getting it where i wanted it i went back outside and proceded to load the tune. well it erased the pcm memory and then a error came up saying that the connection to the ecm was lost. it then tryed reconnecting and then when that failed it tryed to reprogram the tune and that failed as well. now if i try and load a stock tune i have on the comp it says that it cant communicate with the pcm. the cable is hooked up right and the connections are good. is there a reason why this happened?
can it be fixed? or do i have to buy a new pcm?
btw i have the moats cable
infinitebird 01-26-2006, 10:37 PM You're probably screwed. You don't have to buy a new one, you can have that one repaired, I forget the place that does that.
Hope this doesn't happen to me. So far I have close to 10 successful writes, also with that cable.
infinitebird 01-26-2006, 10:38 PM are you plugging it directly into a serial port or a usb to serial converter
The moates cable is a direct usb cable, no serial.
oneslowz28 01-26-2006, 10:41 PM yea its a direct usb cable. omg this sucks can someone find out who fixes them so i can ship this thing off asap
MEAN LT1 01-26-2006, 10:51 PM I had this happen one time. Whayt I did first was take out the pcm fuse and let it set for a little while. Plugged the fuse back in and it took a little while for it to crank but it started. Try it, it wont hurt none.
Loadre 01-26-2006, 10:51 PM It's not a cable problem, the PCM is fried so it just won't connect.
oneslowz28 01-26-2006, 11:07 PM what caused it to fry?
Loadre 01-26-2006, 11:13 PM It lost connection for whatever reason in the middle of uploading.
Imagine backing up your hard drive onto a CD. If your computer shuts off in the middle of burning the CD then it will stop right there and not correctly "end" the CD. This is what to your PCM.
oneslowz28 01-26-2006, 11:30 PM oh ok
turbo_Z 01-26-2006, 11:54 PM Make sure you have the most recent Tunercat update. I have had this happen before too where it lost connection right after it erased the old memory. Try not to upload the file from a floppy disk but off the hard disk and try a different computer next time.
oneslowz28 01-26-2006, 11:56 PM i have the new update
Slow260z 01-27-2006, 05:32 AM AKM cables will remove the chips and put a connector on the board and reflash chips for you. Not cheap but it isn't an easy task. I had one done for my setup. I am develping a board to collect data at a faster rate and KNOW I will lock it up so bit the bullet on one that was locked up.
AKM is the only one I would trust to do the task.
Good luck
shoebox 01-27-2006, 08:43 AM AKM cables will remove the chips and put a connector on the board and reflash chips for you. Not cheap but it isn't an easy task. I had one done for my setup. I am develping a board to collect data at a faster rate and KNOW I will lock it up so bit the bullet on one that was locked up.
AKM is the only one I would trust to do the task.
Good luck
I don't think AKM does this any more. Pretty sure MadZ does, though.
Try taking power off the PCM for a while like MEAN LT1 said.
Dave '97 Z28 M6 01-27-2006, 01:50 PM Imagine backing up your hard drive onto a CD. If your computer shuts off in the middle of burning the CD then it will stop right there and not correctly "end" the CD. This is what to your PCM.
That's an excellent analogy... the first time I've seen it described this way!:thumb:
steve9899 02-01-2006, 02:23 AM it would be cheaper to get a pcm from a scrapyard then have someone socket the pcm
Maybe, but then it can happen again.
If you don't want to socket, then Ion will fix it for $40. Socketing is $60.
jsetzer 02-01-2006, 02:34 PM Have ION fix it, or check with Brian, don't know if PCM4less does these or not. I would fix it, because I have lt1edit and it is tied to the vin on my pcm.... I don't think tunercat does that though.
An extra is nice for emergencies, but I am keeping my main one.
plan Z 02-06-2006, 11:29 AM are the updates found at tunercat's website? i've never downloaded any of them.
madwolf 02-06-2006, 02:58 PM Socketing and a set of extra chips will comes in very handy when you've failed your upload and you need the car ASAP. Believe it or not, the $60 charged for the socketing is a steal considering how much time and effort is involved in doing it. It also pays off by the 2nd fail. (2 repairs = $106 shipped and socketing + 1 set of extra chips is $103 shipped)
speedracer69 02-07-2006, 02:43 PM I F-ed up two computers before i knew what the deal was.
Here is the the thing when you go to re-write your computer.
1-Put it on a slow bat charger.
2-take out the fan relays-so the fan will not turn on.
3-turn off ANY thing on your car that uses ele.
after that it should be ok.
infinitebird 02-07-2006, 03:55 PM I F-ed up two computers before i knew what the deal was.
Here is the the thing when you go to re-write your computer.
1-Put it on a slow bat charger.
2-take out the fan relays-so the fan will not turn on.
3-turn off ANY thing on your car that uses ele.
after that it should be ok.
yes i always make sure nothing is running on the car and that the tuning program is the only one running on the comp. haven't had any issues yet.
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