4 3 Chevy Tbi Sensor Wiring Diagram

Ect sensor connects directly to ecm with two wire connector gm p n 12146312 or 29036979 delphi ts10075 used widely in gm vehicles sensor is a non linear thermistor which varies resistance with temperature. Testing the oxygen sensor commonly referred to as o2 sensors on your 4 3l 5 0l or 5 7l gm vehicle is not that hard to do. Fuel injection computer pin out chart for 4 3l 5 0l and 5 7l with a 4l60 e automatic transmission.

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4 3 chevy tbi sensor wiring diagram. 1993 pcm connector pin out chart gm 4 3l 5 0l 5 7l. Page 1 of 2. Lay the harness out on your work bench and have each sensor plugged into the harness then trace each wire back to the ecm connector you will be able to separate a lot of uneeded wires consult wiring diagrams. The ecm sends a precise 5v reference to the thermistor and uses the return voltage to establish temperature by.

Basic connections are standard but it is easy to customize one for your needs. Once you have each wire identified and layed out then you can set it up on the engine and start tailoring it to fit your engine. This is a basic tbi harness for all engines using ecm 1227747 and 1228746 type ecm many others can be used. Chevrolet vehicles diagrams schematics and service manuals download for free.

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