Question about 1998 Ford Mustang
Changed CCRM and PCM all fuses good no voltage at inertia switch
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Posted on Jan 02, 2017
At this point I would get a haynes manual from somewhere like autozone so you can get the wiring schematic. I believe the relay is turned on by the computer. It sounds like there is a wiring issue between the relay and the inertia switch. Have you checked the harness long the frame for damage or plugs in the engine bay.
Posted on Jan 02, 2010
the answer is no they are not the same. the constant control relay module or integrated control module is located on the right inner fender well under the hood. it has a 24 pin connector going to it and it controls various things like the cooling fans and the air conditioning system.
Posted on Jul 08, 2010
SOURCE: 98 Ford Ranger 2.5 liter
Iwould check the fuel pump next for 12 volts . If you have it there then you need to look at the fuel pressure regulator. The way this works is one side hooks to engine manifold vacuum and the other is pressure from the fuel pump and supplys the injectors no electrical involved but if the diafram goes or leaks you would get less or no fuel to the injectors . Its kind of hard to say for sure with out seeing it but it sounds like a no fuel issue it could be the pump so you need to investigate some more to find out if it is electrical or fuel related good luck with it
Posted on Mar 09, 2011
SOURCE: 1997 ford thunderbird 4.6l
Hi, have you checked the fuel pump relay? It is turned on by the PCM. You can try swapping it with a similar relay in the box under the hood. If that doesn't work, probe the relay socket with a 12 volt test light to see what's going on. With the key off, there should be one hot terminal in the relay socket. With the key on, there should be 2 hot terminals and one ground terminal. To find the ground terminal, hook the test light clip to battery positive and probe the socket. A grounded terminal will light the light brightly. The pump terminal should light the light dimly. The 2 hot terminals should not light the light at all. Please let me know if you have questions, and thanks for using FixYa.
Posted on Mar 14, 2011
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You have a fuel pu,p driver module that gets the power from the inertia switch and the power for the fuel pump comes from that module. I would start by checking for a wiring problem. Below is a picture of where that module is located. At the plug of the module you want to make sure you have good continuity from the pink and black wire at the module to the inertia switch. Then you will want to make sure you have continuity from the fuel pump to the module in the brown and pink wire. That should be the power source to the fuel pump. One other thing to keep in mind and that is the PCM controls ground to the fuel pump so this may be an issue. Try that first to see if you have a wiring problem. If you have power from the inertia to the module but no power coming out of it to the fuel pump this may be your problem. Hope I was able to help...
Posted on Feb 29, 2012
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