1987 Chevy Tbi Wiring Diagram

All the wires at the connectors have alpha numeric addresses showing where the other end of the wire is located ac cording to the grid.

1987 chevy tbi wiring diagram. 1988 was the last year of carburetors on gm s passenger cars. Here s a list of the pins but they are also on the wiring diagrams above. I m looking at the wiring diagram and there is no hall effect on it. Although just a small number of cars were equipped with tbi in 1987 this changed very rapidly in 1988 when it was introduced on the f bodies camaro and firebird and expanded to include the chevrolet caprice monte carlo and the truck lines as well.

This is a basic tbi harness for all engines using ecm 1227747 and 1228746 type ecm many others can be used. Tbi wiring harness conversion. Wiring diagrams description these diagrams use a new format. Typically technical support is limited to the customer with only a harness purchase due to the complexity of variables we have no control over.

A2 not used a3 not used a4 gry to egr relay optional this is a ground from the ecm to control the egr relay. 73 76 diagrams 73 76 cab interior 73 76 chassis rear lighting chassis cab and stepside 73 76 chassis rear lighting fleetside and suburban 73 76 engine and front lighting. 1987 chevy s10 2 8 tbi wiring diagram. S tbi no fuel spray from injector answered by a verified gm mechanic.

The wiring diagrams use an alpha numerical grid and an address for each wire entering the harness to show where it comes out. Here are the complete wiring harness schematics for the 73 87 series pickups. Basic connections are standard but it is easy to customize one for your needs. The diagram is surrounded by a alpha numeric loaction grid.

The wiring diagrams in this manual use a format which reduces the number of lines on a schematic by showing each wire connection at the terminals and components but only one wire for the wiring harness. A1 grn wht this wire is used to energize the fuel pump relay.