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circa 1988 Grand Marquis/Crown Vic manual anyone?

I am trying to find out the relay layout for my 1988 Grand Marquis and I am hoping that someone here has a manual or similar vehicle that will show you this.

I have four relays, mounted on the inside fender wall, driver side, near the window washer fluid tank. My question has to do with which one is which. I am trying to replace two of them. My relay mounting has two actual black rectangular housing boxes. The one closest to the inside firewall has two relays mounted inside. The second one closer to the window washer fluid tank, has one relay inside, one green colored relay mounted outside closer to the tank.

The two that are mounted in the black rectangular housing closest to the firewall have the following wiring (as close as I can tell the colors): #1 - red/black, black, orange/black, large wire black/orange #2 - black, red, orange/black, tan/black

The one inside the black rectangular housing closest to the window washer fluid tank has the following wiring: yellow, yellow, yellow jumped across two connections, and black

The one outside that rectangular housing, closest to the window washer fluid tank is green in color and has the following wiring: a large orange wire, a large yellow wire, yellow/blue, red

If anyone can give me any clue of which relay is which, please let me know. Thanks and take care, Sharon

Reply to
Sharon
Loading thread data ...
1- EEC power relay :Coil : red-lt grn / blk-lt grn contact : org-blk / blk-org

2-A/C WOT relay :Coil : red/org-lt-blu contact : pnk-lt blu / blk-yel

3- Fuel pump relay coil : tan-lt grn/ red contact : yel/org

4- Horn Relay : coil : yel-lt blu / yel- lt grn contact : dk blu / yel lt blu

hope this helps, you can also proceed by elimination, disconect relays and see what happens, : no horn, dont hear fuel pump, car doesn't start......

Have fun :)

Reply to
Spark

Sharon - check my reply under "Still Won't Start" - maybe it will help. Look on Ebay for a factory shop manual.

PoD

Reply to
Paul of Dayton

I had a similar problem myself on my 87 Town Car, a relay was draining the battery, but after replacing it and a boost, it would crank and start. Another problem was that it would crank but not start, and it happened to be the ignition module under the distributor... I will send you the wiring diagrams for that year , you will have to enlarge them to get a clear picture.

Reply to
Spark

I already found the fuel pump relay spot by pulling each relay and using the product cross reference option at AutoZone's website. It did match the coloring scheme that you told me. I am still unable to start the car. It has juice to the starter (new battery, new battery connections). And I have changed out the EEC relay and the Fuel Pump relay.

My original problem started when I went out one morning to start the car and it was dead. Got a new battery, since it was a used car and I had no idea what shape the original was in. Still couldn't get it to crank over at all (just clicking). If I trickle charged it enough to get it going and jiggled the wires near the relay boxes (with the ignition key out), I got a clicking noise down near the starter. As if one of the relays was trying to make contact even though the car was turned off. That is why I switched out the EEC and Fuel Pump relay. I think this may have been the original problem that drained both batteries. Could be there was a short in a relay that kept it running when the engine was turned off.

In any event, I returned the new battery and got another. Came home, connected up battery, new cables, and relays properly. It still will not start. It cranks over and all accessories now light up completely, but no starting. I have never heard the fuel pump run on my car, so it is hard to figure out if it is running or not. I checked every fuse in the fuse box, none blown. I know that there are fusible links that have something to do with the fuel system, but I have no idea where they are. I am not sure if there are circuit breakers involved either.

Suggestions and ideas would be greatly appreciated. I am going to the library to see if I can scrounge up a manual. I am on a VERY limited income, that is why I am driving an older car and trying to get it working myself. I cannot afford a tow or a $62 hour mechanic. Thanks and take care, Sharon

Reply to
Sharon

Not sure if you sent these, but I never got them. I went to the library and found ones for an 85. Figure they can't be too much different, and so far I haven't found any difference. But I sure could use a 'walk through' the electronics end of the fuel delivery system. I looked in the Mitchells and Chiltons at the library and they tell you nothing. I know there is at least one fusible link involved, because of the fuel pump relay wiring. Are there others? I hate to go through the expense of having someone put in a fuel pump if it is only a link. I, so far, have changed out the EEC and fuel pump relay. I am going to spritz the air cleaner with starter fluid this morning and see if it will start. If so, it is most likely fuel and I will want to check for any links, breakers, and fuses before I resign myself to calling it quits.

Take Care, Sharon

Reply to
Sharon

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