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  1. S

    1993 Explorer XLT fuel pump issue.

    1993 Fuel Pump After extensive investigation, as I wanted it to be something cheap, I took the computer out and attempted to test it. Any rate I replaced the computer that is on the driver side front door panel. A little over 100.00 with a 1 year warranty. Replaced it started engine, drove for...
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    1993 Explorer XLT fuel pump issue.

    1993 Ford Explorer Fuel Pump Issue
  3. S

    1993 Explorer XLT fuel pump issue.

    Fuel Pump Issue Ok that makes sense. Make sure there isnt a short on the coil side of the relay to ground. If you unhooked the battery at any time before you did the code test you may have erased all the codes from the computer. I did that. Just make sure, battery is unhooked, both...
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    1993 Explorer XLT fuel pump issue.

    Fuel Pump Stuck What method did you use to determine it is the computer? I would check all wiring related to the fuel pump relay. Especially grounds. Also at the ecc test point, as if it closes the circut there it will run continously. I discovered several oil soaked spots on wiring on...
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    1993 Explorer XLT fuel pump issue.

    Ford Explorer Success
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    1993 Explorer XLT fuel pump issue.

    Pcm Shorty: I would like to thank all of you for the responses I received. I researched through all of the leads you all gave me and finally (frustrated) I decided to take the computer out of the Ex and remove the cover. I found the problem I think.. In the front left side (connector...
  7. S

    1993 Explorer XLT fuel pump issue.

    I took the dash apart and the bulb is good what else would stop the CEL from coming on?
  8. S

    1993 Explorer XLT fuel pump issue.

    B+ at ?? Shorty: B+ was connected by me to the AC Clutch, not the WOT relay, sorry I confused all. I was just checking to see where I actually had any volatges and what they were on whatever connectors, and I checked the AC connector and had nothing and I knew that or thought that the the...
  9. S

    1993 Explorer XLT fuel pump issue.

    FP Test lead *l Improper fuel pump relay operation (should operate when FP (test) lead is grounded with ignition key in RUN position). This test lead is it the one on the eec connector. If I cross it and the one to the left of it, the relay clicks and the pump runs. but vehicle wont start...
  10. S

    1993 Explorer XLT fuel pump issue.

    Crank Sensor Wires Ok, I cleaned the crank sensor and separated the brittle wires, and spread them apart and sprayed carb cleaner in the intake and the vehicle will run for a few seconds. Dod ot twice and both times, it ran smooth. But died. Am investigating for a used PCM I guess from a...
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    1993 Explorer XLT fuel pump issue.

    AC/WOT Relay I am still working on the Ex. Today I found that the AC/WOT relay is not clicking when you turn on the key. I has lost the AC about a year ago and thought the clutch coil was bad, so I dug deep into it today and foiund that if you put B+ to it and ground with the connector...
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    1993 Explorer XLT fuel pump issue.

    billmnfl: The box has two tabs on the left side. Press them in and box will lift up, There is a bundle of wires on a tab that is hooked to the rear of the box. Snap it loose and the box will move upwards about a foot. But it is still tight at the front of the vehicle as the feed from the...
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    1993 Explorer XLT fuel pump issue.

    TPS Voltage Do I need to use chassis ground or is there a ground in the connector terminals? Referencing the goofy readings from the previous email. Also I used a test light when I had the B+ coming from the battery to test the grounds with and I touched the test light to the case of the...
  14. S

    1993 Explorer XLT fuel pump issue.

    PCM Power I have completed testing the "3" power leads on the pcm plug. 1-37-57 and they appear ok. Testing the ground circuts 20-40- 60, seem ok also. I am assuming I have the right pcm pinout diagram. There were no pin numbers on the plug that I could find. I had a guy tell me to check...
  15. S

    1993 Explorer XLT fuel pump issue.

    Test Connector and Fuel Pump The pump will run if you short the pins in the test connector, relay on fuel pump clicks. I tried to start it with this hooked up but no start. It still will not click the fuel pump relay unless you short it. Should I pull the PCm from the kick panel and check...
  16. S

    1993 Explorer XLT fuel pump issue.

    EEC TEST Connector Shory: Am excited, did the fuel pump on the eec test connector and the relay clicked and the pump ran. I dint see if it cycled or shut off after 5 seconds but it runs when you close the two slots on the left side of the connector. Maybe we are getting some where...
  17. S

    1993 Explorer XLT fuel pump issue.

    Shorty: No problem, I did check in the fuse (distribution) box and there are 3 relays interconnected by a red wire, and they all had power, that was my original reference. I will go look for all 3 red wires coming into the computer. Can I just pull that plug off and check wire from that...
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    1993 Explorer XLT fuel pump issue.

    CEL & Power Leads Shorty: You referenced all "3 leads" Are there 3 feeds at the computer or you referencing the distribuition box connectors also. Also do you know what pins I short on the eec Test connector, to try to get the fuel pump to run? It has one large one with I think 6 pins...
  19. S

    1993 Explorer XLT fuel pump issue.

    Fuel Pump Do you or anyone know if the ignition switch would have anything to do with no fuel pump, considering all the rest of things in this post, or if there are any other relays anywhere connected to the CEL light etc. I am hard pressed to get this going as it is the only vehicle I...
  20. S

    1993 Explorer XLT fuel pump issue.

    PCM Power Checked the red wire just before it enters the control box and it has power with key on, dead when key off. Thank You for the wiring diagram.
  21. S

    1993 Explorer XLT fuel pump issue.

    Wiring Diagram Shorty: Have a partial drawing in a cheapy covers all explorer manual but it is not exactly my explorer specific.
  22. S

    1993 Explorer XLT fuel pump issue.

    Red Wire Shorty: I took bottom off distribution box. Red wire is in three places. Feeds from one relay to another and is hot with key on. Dead with key off. I checked it from the ECM relay to the next as is is chained one to the other and all are hot with key on, dead key off.
  23. S

    1993 Explorer XLT fuel pump issue.

    Red Wire Where is the red wire. I looked all over and found pimk and white, it is hot with key. I pulled the distribution box loose, but it has a cover on the bottom. Do I need to remove the cover? I did slide a meter probe to the relay and there is one hot key off, and two hot with...
  24. S

    1993 Explorer XLT fuel pump issue.

    PCM Relay Ok, relay clicks. changed it out with one of the others in the box. When plugged it it clicks strong. So I guess it is ok. or not?
  25. S

    1993 Explorer XLT fuel pump issue.

    CEL Light No the csl light does not come on, only thing I see is the battery icon, and the ABS light. I have checked all over the explorer and not sure how to proceed. Appreciate your help. Thank You
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