1992 Ford Ranger 2.9l Crank but no Start

[beckers0347]

This may be a dumb question but I'm having the same problem, when bypassing relay, I take the relay off and that's a picture of the plug itself that goes into the relay under the hood passenger side correct?

I don't know exactly what your asking but as for the location it's under the fuse box on the passenger side it's a green plug with a black or black/green really plugged into it, Ill add a picture of the connector. And if you having the same problem with bypassing the relay it's most likely the inertia switch or a wiring issue because bypassing the relay just completes a circuit and turns on the fuel pump.

 

[Paulos]

No, that is a picture of the test connectors that should be in the immediate area of the fuel pump relay and ECM relay (passenger side firewall). They may also be down low in front of the blower motor. They look like this

 

[Oscara18]

I don't know exactly what your asking but as for the location it's under the fuse box on the passenger side it's a green plug with a black or black/green really plugged into it, Ill add a picture of the connector. And if you having the same problem with bypassing the relay it's most likely the inertia switch or a wiring issue because bypassing the relay just completes a circuit and turns on the fuel pump.

The inertia switch would cause me to lose fuel pump and spark to ignition coil? I've changed TFI/ ignition coil/spark plugs and wires/ fuel pump relay. With key in fuel pump does not turn on but also no spark. Found inertia switch but it's not the original, it's some aftermarket one that's not re-settable

 

[Shran]

I would check continuity through the inertia switch or temporarily bypass it with a jumper wire and see if your fuel pump runs. It's only purpose is to cut power to the fuel pump in the event of a roll over, it does not cut power to the ignition coil.

No fuel/no spark sounds to me like you have a grounding issue somewhere. I would check the ground wires that are normally connected to the negative battery terminal - usually there is one wire that goes to a round connector and from there splits into two wires. That grounds both your ECM and fuel pumps... I would also check the ECM ground right next to the computer under the passenger side kick panel.

 

[Oscara18]

I would check continuity through the inertia switch or temporarily bypass it with a jumper wire and see if your fuel pump runs. It's only purpose is to cut power to the fuel pump in the event of a roll over, it does not cut power to the ignition coil.

No fuel/no spark sounds to me like you have a grounding issue somewhere. I would check the ground wires that are normally connected to the negative battery terminal - usually there is one wire that goes to a round connector and from there splits into two wires. That grounds both your ECM and fuel pumps... I would also check the ECM ground right next to the computer under the passenger side kick panel.

Will do, thank you!