1989 Chevy Tbi Wiring Diagram

A2 not used a3 not used a4 gry to egr relay optional this is a ground from the ecm to control the egr relay.

1989 chevy tbi wiring diagram. A1 grn wht this wire is used to energize the fuel pump relay. 90 350 tbi vacuum lines. Tbi wiring harness conversion. Workshop repair and service manuals chevrolet all models free online.

You can use a late 80 s or early 90 s gm tbi definition. Page 1 1989 wiring diagrams r v p truck models when reference is made in this manual to a brand name number or specific tool an equivalent product may be used in place of the recommended item all information illustrations and specifications contained in this manual are based on the latest product information available at the time of publication approval. If you have access to a scan tool use a hook up for a 1990 350 cu. 1989 90 5 7l v8 vin 7 lo5.

1 for access to the idle stop screw pierce the cap with an awl and carefully pry the cap from the side of the throttle body. Access our free throttle body injection tbi repair guide for chevrolet full size cars 1979 1989 through autozone rewards. Find chevrolet 57l350 hose line tubing and get free shipping on orders over 99 at summit racing. 1989 v8 350 5 7l vin k tbi 1995 v8 6 5l dsl turbo vin s 1997 c 20.

Consult a service manual or see below for any check engine light code definitions. As you can see from the above diagrams compared to a carburetor the tbi is much. This is a basic tbi harness for all engines using ecm 1227747 and 1228746 type ecm many others can be used. Here s a list of the pins but they are also on the wiring diagrams above.

For a gm tbi application to read the data or to check for stored codes. Typically technical support is limited to the customer with only a harness purchase due to the complexity of variables we have no control over. 1989 wiring diagrams r v p truck models when reference is made in this manual to a brand name number or specific tool an equivalent product may be used in place of the recommended item all information illustrations and specifications contained in this manual are based on the latest product. Do not sell my personal information.

1228747 truck 1989 90 5 7l vin k lu5. Print below is a listing of vacuum diagrams for most of the engine and emissions package combinations covered by this guide. All chevrolet tbi s use a speed density fuel calibration using a map sensor much like the speed density tuned ports. Vacuum line hose diagram for a 1989 chevy 350 engine with tbi.