64K bootable image for '95 LT1 PCM

[Winchy]

Hey EdZip,
This is fantastic! I am lucky to have found this thread. Not two hours ago, I bricked my '95 LT1 PCM while flashing with WinFlash. I have never had a problem flashing with anything else. Today I decided to try WinFlash and it killed it.
I cannot communicate with it anymore. The LEDs on my ALDL adapter won't even flash anymore. They used to go wild as soon as I plug in the laptop.

I was going to send it out to the TunerCat people. They say the can fix it for $25 but, I see here you were able to bring it back from the dead. Would you mind it too much to paraphrase what you did? I am not foreign to electronics, so if you want to get down to techs, I am fine with that.

I am not trying to get out of the $25, I really want to learn how to do this since I have the feeling this is going to happen again. I want to get the EEPROM on a ZIF if that is possible and buy a dozen of of those little suckers just to be on the safe. :)

Could you please share the knowledge?

Thanks.

[EDZIP]

Hey EdZip,
This is fantastic! I am lucky to have found this thread. Not two hours ago, I bricked my '95 LT1 PCM while flashing with WinFlash. I have never had a problem flashing with anything else. Today I decided to try WinFlash and it killed it.
I cannot communicate with it anymore. The LEDs on my ALDL adapter won't even flash anymore. They used to go wild as soon as I plug in the laptop.

I was going to send it out to the TunerCat people. They say the can fix it for $25 but, I see here you were able to bring it back from the dead. Would you mind it too much to paraphrase what you did? I am not foreign to electronics, so if you want to get down to techs, I am fine with that.

I am not trying to get out of the $25, I really want to learn how to do this since I have the feeling this is going to happen again. I want to get the EEPROM on a ZIF if that is possible and buy a dozen of of those little suckers just to be on the safe. :)

Could you please share the knowledge?

Thanks.

Follow this thread:

http://www.gearhead-efi.com/Fuel-Inj...-repair-source


BUT bookmark this thread...it has the (2) bin files that worked. As a matter of fact the repaired PCM is still in the car working great. If you run into any problems...just send me an email.

Ed

[Winchy]

I'm all over this like soy sauce on a dumpling. Thanks man!

[troutdog311]

Killed my 16188051 this weekend mid flash. I cannot find the ED80009-ND socket nor the AN28F512 chip online besides in bulk. I tried searching many different keywords without any luck. I've replace a few bios chips in the past that were pre programmed and many integrated video chips with my cheap flow bench. I'm wondering do I really want to spend all this time "trying" to get this going. I am willing to do so but if there is someone reliable that can install the socket and program a few chips I may take that route. I've got another ECM already but a socketed ECM would be great for future bricked units. Thank you

[troutdog311]

Found some Flash AN28F512 chips. Will any eprom socket work? Sorry for the back to back post. I have some free time at the office.

[troutdog311]

Finally got the programmer in yesterday. It 3 tries but the 3rd times the charm right. The first time I used the Flash BlueGray file above. After I programmed the chip and installed all seemed well. The fans didn't come on like when it's bricked. I used TunerCats and it got maybe 30% and had a wrong message sent error. Next go round I used the BNDH FirstHalf file. After installing the fans came on immediately so it was a no go right off the bat. Third try I used another chip and went back to the Flash BlueGray file and I also used EEHack. I did the stability test first and passed all 15 and I knew we had something. Flashed my latest bin file. The ole LT1 came to life! Thank you all for the help.

[steveo]

make sure your chips are the correct height in the socket. i had a hell of a time. if they are too low the pins make poor contact