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. A2 not used a3 not used a4 gry to egr relayoptional this is a ground from the ecm to control the egr relay.
84502f Distributor Wiring Diagram 87 Chevy Wiring Library
Chevy tbi wiring diagram. Tbi wiring harness conversion. A1 grnwht this wire is used to energize the fuel pump relay. 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. Tbi fuel injection conversion using a gm tbi efi system. Chevrolet vehicles diagrams schematics and service manuals download for free. 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. It consists of directions and diagrams for different types of wiring strategies and other items like lights windows etc. Heres a list of the pins but they are also on the wiring diagrams above. 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. 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. 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.
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Gallery of Chevy Tbi Wiring Diagram
