Went to reprogram my PCM with a file I got from Bryan. I used LT1 Edit, everything seemed fine, didn't loose connection or power, got to 100% and I shut down as normal. Then I go to scan it, (Just to make sure there are no problems), and now my fans stay on all the time, the SES light is flashing about 1 time every 5 seconds and PCMcomm says no connection can be made with PCM. What is going on here??? I even tired to d/c the battery for a few minutes and that didn't work either. Someone help please.

~John

 

Have you tried to reflash with your previous program? What are you using, LT1edit? If you are then try downloading the previous flash and see if the checksum is correct.

 

This just happened to me Wednesday night. I downloaded a new program from Bryan and I have the same problem. From the info I have found the PCM is fried. If you find a different solution let me know. Look up my post and you will find some more info. He is out of town and I have an email out to him.

Chris

 

Brokenz: Yes..... I'm using LT1 Edit. I did in fact try to scan and reflash the PCM. I tried scanning with: PCMcomm, FreeScan and the progscan utility Bryan sent me. Everything comes back with a message that states the PCM is not responding.

1QUIKTA: Looks like we are in the same boat here w/o any paddles..... or PCM's for that matter. I too, sent an E-mail to him explaining the sitution. I am hopful he will do what is needed to resolve the problem. I've read in other posts that the actual PCM needs to be sent somewhere and the chip re-burned. I am looking forward to seeing if Bryan is able / going to do this for us. I've also heard he is a really nice guy to work with and stands by his work. We'll see on Tuesday or Wednesday. Let me know if you hear anything and I will do the same. Thanks

~John

 

the computer is gone.

i am assuming he sent you a .bin file and with LT1 edit you are supposed to use .lt1 files i believe. i know with tunercat if you flash the car with a .lt1 file then it is ruined but still completes the flash process like normal so it doesnt seem like anything is wrong besides what you are experiencing with the fans and SES light. so since you can fry a computer with tunercat using a .lt1 file then it seems safe to assume the same would happen flashing a .bin file with LT1 edit. i also know Bryan generally emails people .bin files... or he did for me at least. sorry for the bad news.

 

What you are saying is correct. Bryan does send out .bin files. I asked him before doing anything if I would be able to convert the .bin to a .lt1 w/ a conversion program and he said yes, that will work with out any problem. He left for vacation, though, before I got a chance to try it and discover my PCM to be a paperweight.

How did you go about flashing your PCM using a .bin file?? I would guess you have TC then and not LT1 Edit?? Thanks.

~John

 

i use tunercat.

why didnt you convert the file then if thats what he told you?

 

I'm not sure I know what you mean. He sent me the file on a Wednesday night. I checked my mail late that night and saw it was in a .bin format. I then asked him if I could convert it so I could use my LT1 Edit. He sent me a reply Thursday morning before he left saying it would work. I checked my mail Thursday night when I got home from work and found it would be ok. I tried it, found something was wrong, but it was too late then to ask him any more questions, he already left.

John

 

right here you say he told you to convert the file. isnt that what you mean?

 

Yes, it appears he told you it would work if you converted it.

Jordon Musser, from this board, wrote a small program that converts between .lt1 and .bin files. It works great.

 

Ok, I see what you are saying. Yes, I did convert the file before programmed the PCM. I wasn't sure how to use the DOS programmer he sent in the zip file, so I wanted to be sure I could convert the file and use LT1 Edit to program it before I did anything. He then sent a message saying it would work, I then converted the file and programmed w/ LT1 Edit. I hope that clears things up.

John