Help with a 5-speed swapped 93' S10 8625 $E6 Vin "Z" TBI 4.3

[Philalbar1]

Hello everyone, I have a 93 S10 with a TBI 4.3 V6. The 4L60E crapped out and I was able to buy the truck super cheap! I haven't had the best of luck with GM autos, so I also bought a 92 parts truck with the 5-speed in it, but didn't realize that the ECM was a 7427 or 7724 (don't remember exactly)

Long story a little shorter, I can't swap over the ECM, and I have bought TunerProRT and an AutoProm, but I'm having problems with the truck not wanting to idle down between shifts or rolling to a stop. Once the truck is sitting still, it runs GREAT (700-750 RPM idle and no hunting) and I've rebuilt the throttle body Just In Case, but no idle improvements. It seems to run better under load etc, but it still doesn't want to de-rev between shifts.

I'm sure this has something to do with the auto-trans configuration giving me trouble, but I can't seem to find a bin file that will work for my setup. I was looking for a BCPM or something similar, with no success. I have managed to code in the e-fan $E6 Fan Control v100, and it works great with my Intrepid cooling fans, but I really need some advice and/or direction as to how to get this ol' gal to run properly. Any and all help would be greatly appreciated!

~Phil

[1project2many]

I was looking for a BCPM or something similar, with no success.

http://www.gearhead-efi.com/Fuel-Inj...ll=1#post74168

[Philalbar1]

1Project2Many, Thanks for replying, but I misspoke on that initial post. I have tried the BCPM bin in the past, and have run into lots of little problems with the California edition having all the emissions components that my truck doesn't have equipped. Is this something I just have to go through one-by-one and compare with the bin from my factory chip, and then turn off from the BCPM or is there a non-california 5-speed "Z" engine bin? I'm pretty new to this whole deal, but I'm trying to learn. Thanks again for your reply!
~Phil

[1project2many]

In my software there is a very short list of calibrations specifically for that engine and five speed transmission.

Model Year 1992 CBJX5723
Model Year 1994 BDCM5424
Model Year 1994 BHRL5909

There is a spreadsheet which shows a number of manual transmission applications. To me that list is questionable because many of the applications listed as "manual" show up for me as "no transmission type listed." BCPM is one of them. But I can look through my calibrations tonight and see if I have any listed in the spreadsheet as manual transmission, then check to see if they actually are manual trans.

Otherwise you can try copying data from the 5 speed cal to your auto cal. One of the files in the post I linked contains a list of all the differences between the manual and auto trans files.

[Philalbar1]

In my software there is a very short list of calibrations specifically for that engine and five speed transmission.

Model Year 1992 CBJX5723
Model Year 1994 BDCM5424
Model Year 1994 BHRL5909

There is a spreadsheet which shows a number of manual transmission applications. To me that list is questionable because many of the applications listed as "manual" show up for me as "no transmission type listed." BCPM is one of them. But I can look through my calibrations tonight and see if I have any listed in the spreadsheet as manual transmission, then check to see if they actually are manual trans.

Otherwise you can try copying data from the 5 speed cal to your auto cal. One of the files in the post I linked contains a list of all the differences between the manual and auto trans files.

That's what I was afraid of. I know that the 93 was a bastard year that flipped between the 4L60 and 4L60E. I think they made a lot of changes since the electronically controlled trans needed to communicate with the ECU on a much deeper level. Now that my GETRAG is in, I just need the ecu to ignore everything but the engine and tailshaft speed. I have looked through a spreadsheet before containing all the different applications, and I've tried to find the factory PROMS for a manual vehicle. I found these in that spreadsheet that say 4.3 with 16168625 ECU and MAN trans: AYXC, AYXK, AYXY, BAAK, BCPK, BCPL, BCPM, etc. but I have yet to find one TBI 4.3 "Z" motor with manual trans that is available anywhere.

I saw your differences txt file, and there were around 600 differences. I came up with the same thing when I was looking before. I can try to copy over the bin file from the truck's original prom if you think that would help since it doesn't have the 4 letter code on it. . .

I appreciate you taking the time to try and help me find something that will give me a starting point for tuning. I've been digging into this issue off and on now for about 6 months, and every time I make some headway, I find another issue that kicks me right in the goodies. Just for grins and giggles, are any of the configurations you posted above for the 16168625 ecu? They aren't pulling up in the spreadsheet I have. Thanks again for all your help and patience!!!
~Phil

[1project2many]

If you follow the thread in the link I posted, there is another link to yet an older thread which talks about this very problem. If you haven't read that, it might be helpful to spend a few minutes with both. I believe the files I listed are for the 8625.

Thank you for pulling the BCC's out of the spreadsheet. I'm not sure if you're saying that you've tried all of the calibrations you listed, or if you're saying you're unable to find copies of the files.

There is another tool which may help identify BCC's for manual transmission equipped vehicles. TIS2weballows one to look up GM calibrations. Feed in a valid VIN, select the transmission type, and it will provide calibration information. I have started by attaching a screenshot of the calibrations it shows for a 1993 4.3 w/ manual transmission, with "pluggable" computer (vs flashable) and Federal emissions. There may be additional calibrations for high altitude, California, and Export vehicles. Someone will need to associate the BCC's below with the correct controller part number but unfortunately I'm out of time this morning.

You may end up creating your own manual transmission file. We could create a starter file similar to what I did in the other thread. I am happy to help. What are the problems you've had with the California 5 speed calibration you tried?