Latest Ford 300 Inline 6 Wiring Diagram Two Wires By The Coil - FordSix Performance Forum - ^ no start - 4.9l, 5.0l, five.8l, 7.5l - from corroded or unfastened cord splice in 12a581 wiring assembly ^ wiring - 12a581 wiring assembly - corroded or free wire splice ensuing in possible no begin mild truck: 1987-90 bronco, f-one hundred fifty-350 collection.
This relay is is located on the air purifier aid bracket, underneath plastic defend. This relay is also inside the diagram that i published with the gas pump relay. Examine the diagram to healthy up the wire colors.
A. Cut out the awful section. B. Reconnect the wires together. C. Solder the wires with resin core electric solder. 6. Use heat shrink tubing (wt5625) to insulate the splice. Tape (eoaz-19628-a) and positioned lower back into the harness. 7. Reconnect the poor battery cable. 8. Take a look at the vehicle for proper operation.
All 3 of these are tested when the engine is being cranked over. There are two way of checking for gasoline. Gasoline stress and gasoline trigger. Each are very critical and must be present for the car to start. Gas pressure is self explanatory. You just hook up the gage and notice what the studying is. Fuel trigger is check with a noid light. The injector receives unplugged and the noid light receives plugged in to the injector clip. With the engine cranking over, this light need to blink. That is the sign to the injectors from the computer. You could have all the fuel strain in the world, however it wont matter if the injector isn't pulsing fuel into the cylinder like it need to! Compression tester, spark tester, gas stress gage and noid light are all available at your local automobile store. All 3 checks play a very essential part in diagnosing a no start condition. Be extraordinarily careful while doing these exams.
2. Discover the gasoline pump relay, determine 1. Three. Trace the # 37 circuit wire (yellow) from the fuel pump relay into the 12a581 wire harness. Four. Cautiously reduce away sufficient harness wrap to reveal the splice (about four or five inches). 5. Look at the splice. If loose or corroded, restore as follows:.