TBI computer controlling electronic tranny? - Third Generation F-Body Message Boards

Charlo · 05-30-2003, 11:21 PM

I searched but could not find anything about the subject. I think some trucks had a 4l80e in them with a TBI engine. I currently am running the 7747 computer. Where can I find info on controlling a 4l80e with a TBI computer? Has this been discussed before?

Charlo

steve8586iroc · 05-31-2003, 10:32 AM

The only computer that will control an electronic trans is a pcm that GM started using in 94 or 95 I think.

Steve

dimented24x7 · 06-01-2003, 03:12 PM

they started using the pcms as early as 93. My 93 s-10 has a 4WD 4l60-e in it and ive always wondered the same thing (really, really hate cfi) because i wanted to run my 4.3 on a tbi and still use thne stock trans. I dont think its really possible though. The number of times the pcms fire the injectors is different tehn that of the tbi systems.

Charlo · 06-01-2003, 03:30 PM

How complicated are the PCMs? I just converted from carb to TBI 454 on my truck. Or are the PCMs only for CFI?

Charlo

dimented24x7 · 06-01-2003, 03:46 PM

pcm is short for power train contol module, and im sure they are much more complicated then the stone age 8 bit ecms we have. Pretty much all cars and trucks sold today have pcms that govern the engines and transmissions operation.