03 19 09 0345 am post 1655197 i know there are posts with wiring schematics for tbi on for example 1986 305 tbi gmc pickup somewhere on this faboulous forum and yet i need a link to it. One of the most popular efi conversions to older chevy engines or any engine for that matter is the gm tbi system using the 1227747 ecm.
Coil Wiring Diagram 88 Chevy Truck No Spark Tbi 88 Gmc 5 7
Chevy tbi wiring diagram. Generic tbi fuel injection block diagram acronyms individual components and their function schematic diagram the actual installation theory and modes of operation calibration equipment variables the subject of this session is throttle body fuel injection. Tbi wiring harness conversion. 1923 chevrolet car wiring 1923 chevrolet general wiring 1923 chevrolet superior model 1923 chevrolet wiring 1925 chevrolet superior model series k 1927 chevrolet capitol and national 1927 chevrolet capitol and national models 1928 chevrolet general wiring 1928 chevrolet wiring 1928 chevrolet. A1 grnwht this wire is used to energize the fuel pump relay. Chevy 350 engine wire harness diagram wiring diagram data tbi wiring harness diagram wiring diagram includes several comprehensive illustrations that present the link of assorted items. A2 not used a3 not used a4 gry to egr relayoptional this is a ground from the ecm to control the egr relay.
Chevrolet vehicles diagrams schematics and service manuals download for free. Heres a list of the pins but they are also on the wiring diagrams above. It consists of directions and diagrams for different types of wiring strategies and other items like lights windows etc. Tbi fuel injection conversion using a gm tbi efi system. The beauty of the tbi systems used on the small block chevy and the 43 v6 is that the systems all work basically the same and gm has kept the wiring the same so there no real need to have the exact wiring diagram for the system you are installing. What is covered here is generally applicable to most tbi systems but we will be putting.
There are many others that will do the same thing but the 1227747 is most well known and documented and will be the basis for this article.
Gallery of Chevy Tbi Wiring Diagram
