Where is the main pcm and fuel relay or CCRM located in a 1995 Mercury Sable - Ford Taurus?

Answer 1

You won't find the fuel relay separate. The reason is that it is built into a module called a CCRM (Constant Control Relay Module). This is an electronic module located under the plastic panel that has all the engine information stickers on it, right over the radiator area.

Remove the 4 screws that hold that panel on, and voila!, there's your CCRM. It's a little metal box about 3 inches by 3 inches, that has a large electrical connector attached to it with a 5 or 6 mm bolt in the middle of it.

That module has all the major relays built into it, like the PCM power relay, fuel pump relay, AC relay, etc., and is non-serviceable. You have to replace the whole thing as an assembly.

I can tell you one thing though, even though I haven't seen your car. The CCRM is almost bullet proof, it does fail occasionally, but hardly ever.

The most common issue with your car, in no power to the PCM, is a loss of ground to the CCRM, which causes the power relay not to kick on. You find the CCRM ground wire at the battery ground cable, right at the battery. It will be the smaller gauge black wire coming off of the cable. Check that connection / terminal to make sure it isn't corroded, hasn't lost its continuity and just needs cleaning before you go any further.

Answer

On the radiator support. ID # on the part is 12B577.

Answer1986-1995 Taurus/Sables have a multi-relay box on top of the radiator. I was told by the dealer that inside the box is the fuel pump relay. Answer

The Constant Control Relay Module (CCRM) interfaces with the Power Control Module (PCM) to provide control of the cooling fan, A/C Clutch and fuel pump. The module also includes the electronic engine control (EEC) relay to provide power the PCM, whose electrical connector is located on the passenger side of the firewall, and whose housing is accessible behind the glove box.

Answer

I have a 1987 Mercury Sable. The fuel relay is combined with other relays mounted on top of the radiator. If you look in your car manual under engine control diagram, find the fuel pump relay wire color code, match it to the wire coming out of the relay mounted on top of the radiator--it's probably there, and should be a 1x3x3 inch (approximately) rectangular black box located just under the plastic panel above the radiator. All you have to do is take off 4 bolts and remove the plastic panel and you should see it. You should see a bunch of wires going right under that panel that its connected to. tony