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Thread: 64K bootable image for '95 LT1 PCM

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  1. #1
    Fuel Injected!
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    Thanks EDZIP, I do have 9 chips total. Well tried the BNDH file and fans came right on as I turn the key. I actually tried to start it for craps and giggles and would fire right up but go dead 5 sec later. It did this every start up. It would not connect with aldl cable. I do have 3-4 virgin chips I'll play with. I just don't understand. I did a much much better job on this solder job and now look at me. It has nothing to do with it being a B-Body PCM right. I know that is stupid question being the PCM part numbers are the same but I just thinking. It is for sure an Intel chip. I'll get it. It's hard for me to give up on something. If you guys think of something please let me know. I'll keep you posted.

  2. #2
    Fuel Injected!
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    I apologize for hijacking this post. Finally had time to mess with it today. After much testing I finally got it going. Apparently the chip has to be seated way further up than I thought. I know a lot of you told me that was something to no over look and knew that had to be the issue. I stacked 4 cut pieces of credit card for the floor. I tried from none all the way up till I got to the 4th piece before it worked.
    On the first PCM that had the corrosion. I removed the socket and put a new one in. It's the same way being that it needed 4 pieces of credit card for the floor. I don't understand how when I did that first one, one piece worked and not now. Ohh well both are working,,,,,so far haha.
    Thank you for all the help guys!

  3. #3
    Fuel Injected! EDZIP's Avatar
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    Good for you..I suspect that the spring tension and contact alignment were affected during the R&R process. Could be the sockets also..if you get in a bind I have extras that were made in Israel.

  4. #4
    Fuel Injected!
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    I thought I had replied. Thanks EDZIP, where did you purchase your sockets. I have 2 types in which both have their pros and cons.

  5. #5
    LT1 specialist steveo's Avatar
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    Aug 2013
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    I apologize for hijacking this post. Finally had time to mess with it today. After much testing I finally got it going. Apparently the chip has to be seated way further up than I thought. I know a lot of you told me that was something to no over look and knew that had to be the issue. I stacked 4 cut pieces of credit card for the floor. I tried from none all the way up till I got to the 4th piece before it worked.
    On the first PCM that had the corrosion. I removed the socket and put a new one in. It's the same way being that it needed 4 pieces of credit card for the floor. I don't understand how when I did that first one, one piece worked and not now. Ohh well both are working,,,,,so far haha.
    Thank you for all the help guys!
    isn't that annoying? i struggled with this for ages too.

    you would figure if you put the plastic piece back that you broke out before soldering, it would be ok.. but for some reason that height isn't quite right either.

    i found that if you look very carefully at the socket and insert the chip very slowly, you can see the socket pins move a bit when they begin to make contact, so you can tell what the maximum height is, and then set it a bit lower.

    i never quite trusted my socketed ecm for a running vehicle after seeing how finicky the sockets were.

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