The 74 harness has only 2 solid pink wires going to the fuel injector harness plug. In this article ill show you how.
Fuel Injector Circuit Wiring Diagram 2 4l Chevrolet Malibu
5 7 vortec spider injector wiring diagram. Otherwise you have a throttle body injector system. Install the wiring harness connectors and brackets. Using a wiring diagram i knew that i needed to locate pin 31 in the c2 red connector of the pcm. A wiring diagram is a streamlined traditional pictorial representation of an electrical circuit. 43 l v6 50 57l v8 vortec. My neighbors truck died on him he said he had low fuel pressure.
Anyone have any idea how i wire the original 57 pink wires to the 2 pink wires on the 74 connector. This was pretty easily done since i had the plenum off of the spider injector assembly and the numbers of the cylinders are embossed on the body of the assembly see photo 3 of 3 in the image viewer. Vortec v6 fuel injection harness 96 99 part 2 days ago chevy v6 spider injector chevy vortec engine diagram chevy vortec 5 7 harness schematics 4 3 injector upgrade gmtop rated plus. It still had the old style csfi injector spider which is prone to failure by leaking fuel pressure though it lasted him well over. A spider injector is located underneath the intake plenum and this is multi port. How to replace the spider injector on a cheyv motor.
This page covers just the basics of the cpi and csfi engines from 1992 through 2004. At the end of the article ive made some recommendations on where you can buy a cpi. Assortment of 57 vortec wiring harness diagram. Vortec engines have spider injectors and they are super expensive to replace 40000 85000 each. 43 or 57 liter. Diagramsthe spider gears with the rear axle gears inside the housing.
Any links to wiring diagrams. Back in 1992 general motors introduced a new type of fuel injection system known as cpi or central port injection or also known as cmfi central multi point fuel injection. Testing a leaking spider fuel injector assembly or a leaking fuel pressure regulator gm 43l 50l or 57l can seem impossible since both of these bad boys are located inside the intake manifolds plenum but they can be tested and its far easier than you think. It shows the elements of the circuit as streamlined forms as well as the power as well as signal connections between the tools. Hi i have a 97 k1500 350 vortec ive removed the spider injector and have bought a fuel injector o ring kit from chevrolet. 1996 1998 vortec 57 hesitation problem duration.
There is only one spider injector for each engine it has 6 legsfuel tubes that go to each cylinder. Any other wiring issues i will run into trying to use the 57 harness on the 74.
Gallery of 5 7 Vortec Spider Injector Wiring Diagram
