1990 Chevy silverado Z71 5.7 TBI EFI, vortec heads with CSFI conversion. NEED HELP!

[Hog]

I guess what was confusing me, it that you said your programmer soldered something into it. Are you talking about the black PCM?

peace
PAuly

[Aksl]

Yes, the black box PCM, 1996-1998, mine is 1998. Well, he soldered a socket for the chip, so he can take it off any time and reprogram it.

So now, the chip can be easily taken off, programmed and installed just by clicking it in the socket place..

[Hog]

That's an odd way to recalibrate those PCMs as they are a flash based PCM. Most people simply flash new calibrations through the OBD2 port. I use Tunercats OBD2 and I can recalibrate the 1996-97 and the 1998-2000 blackbox PCM's by plugging into the OBD2 port.

peace
Hog

[1project2many]

It's not so odd if you don't have flash software!

[Aksl]

Well, I'm not a programmer, and only have experience with Mercedes diagnosis C3 brick multiplexer that I have for my smart brabus.
So as I understand, I need a new flash software, for my pcm, with some changes programmed for my setup.
Is there a solution for me to knolage how to do that my self? What do I need to do it? And can I do it with eprom programmer, since I have a socket that I can take the chip of the pcm. Is their a automotive software, that can read using eprom in which I can make changes, without programming code, like eprom is usually programmes the chip with code, but which can give an easier possibility to change setting, just like in efilife, or tunercat interface?
Thank you.

[Aksl]

Hi everyone, problem solved, it was in crank position sensor. The sensor is placed in a metal mounting, which has a 6 wall like an Allen key hole, and for each vehicle, the sensor is placed in a different angle (direction of the mounting bracket, in total 6 possible directions). So that was the problem!