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  1. jonleroy2506

    Instrument cluster electrical question...

    That's some pretty complicated stuff for a guy like me, I'm gonna try a working tach sensor off my uncle's truck tomorrow, and if that doesn't work I'm gonna have to look into troubleshooting the teca, although I think I've already ruled out a teca failure. I'm really just banking on a new tach...
  2. jonleroy2506

    Fuel pump location 1991 7.3 idi 2 tanks

    Okay good to know, I was honestly quite relieved when 10 gallons of diesel and some bleeding was all it took to fire right up. I wasn't all about the idea of dealing with a fuel issue on top of my electrical Sent from my moto g(6) play using Tapatalk
  3. jonleroy2506

    Fuel pump location 1991 7.3 idi 2 tanks

    I know I started this thread on the topic of fuel pumps, but turns out I was just running wayyyy low on fuel and drawing more air into the pump than fuel... Lol should have checked that first. Someone tell me I'm not the first person to do that Sent from my moto g(6) play using Tapatalk
  4. jonleroy2506

    Instrument cluster electrical question...

    Even if there isnt a specific voltage for me too be looking for, are the two voltages from the two sensors different enough to tell me that at least one of them isnt working? Sent from my moto g(6) play using Tapatalk
  5. jonleroy2506

    Instrument cluster electrical question...

    Pulled codes a long time ago, there weren't very conclusive, just confirmed some sort of limp mode. Haven't pulled codes in a while, it the new tach sensor doesn't pan out I will probably pull them again to see if I can isolate a different problem Sent from my moto g(6) play using Tapatalk
  6. jonleroy2506

    Instrument cluster electrical question...

    Well turns out I was on the right track throughout this whole process but I didnt fully understand the wiring to the dash - I do now tho. None of my gauges were working because fuse 18 was blowing. I thought I had fixed that (i disconnected the main engine wiring plug and all my gauges, other...
  7. jonleroy2506

    Instrument cluster electrical question...

    Here is a picture of an 89 cluster that I have out of a parts truck, mine is a 91 but both clusters look pretty well the same. They both have that circuit board mounted on the bottom right corner in the picture, do you think that could be an icvr in the bricknose's?
  8. jonleroy2506

    Instrument cluster electrical question...

    That does ring a few bells form when I first started digging into this truck. From what I have ready there is some sort of Instrument Voltage Regulator (IVR) on my truck, but the reason I quit looking into that is because I couldn't seem to find a separate voltage regulator from the one on the...
  9. jonleroy2506

    Instrument cluster electrical question...

    Hey all, Been going through electrical issues lately and have made several posts, and I know someone asked me not to make several threads pertaining to the same issue because that makes my progress hard to follow, but I think this question is different enough to warrant a new thread. I...
  10. jonleroy2506

    Dual brake warning diode assembly

    Okay the transmission is definitely in limp mode that is exactly what is happening. I have no o/d on and off light but when my lights are on the back light for the o/d is on. I'll have to check that plug on the passenger side, I have checked it in the past and it seemed fine but at least that's...
  11. jonleroy2506

    Dual brake warning diode assembly

    Fuse 18 quit blowing, but my tach still doesn't work. Transmission appears to start in 3rd gear always. My dash lights are working again but that may have been a different fuse. While test driving it after getting all that fixed up it completely died and wont start now, some fuel related issue I...
  12. jonleroy2506

    Fuel pump location 1991 7.3 idi 2 tanks

    The fuel pump relay is on the driver's side in the engine compartment there are two relays there by the diagnostic port, one is for the fuel pump system Sent from my moto g(6) play using Tapatalk
  13. jonleroy2506

    Fuel pump location 1991 7.3 idi 2 tanks

    I already checked the Injection pump solenoid, and it's working fine Sent from my moto g(6) play using Tapatalk
  14. jonleroy2506

    Dual brake warning diode assembly

    Turns out that engine wiring harness deal was toast, I fixed that and some of my issues went away, thank you for that information
  15. jonleroy2506

    Fuel pump location 1991 7.3 idi 2 tanks

    Hey all, got a few questions about fuel pumps on my truck. First of all, I have two tanks, do I have 2 pumps? Second, where are they/it? I was just driving it after getting the dash put all back together after fixing an electrical issue (or so I thought) when the truck quit and won't start...
  16. jonleroy2506

    Dual brake warning diode assembly

    Thank you for the advice, I wil try to keep asking questions on the same thread in the future. I have found the low vacuum switch, the cluster (obviously) and the chime module, but i dont know where the water if fuel switch is. Is it on the fuel/water separator? Also, what do you mean by the...
  17. jonleroy2506

    Dual brake warning diode assembly

    Hey all Recently I've made several posts about the electrical problems I've been chasing down in my truck and I have another lead as to what might be the problem... Very long story short my 1991 F250 7.3 idi ats turbo diesel with e4od tranny is in limp mode and I've been trying for about...
  18. jonleroy2506

    Need wiring diagrams for 1991 f250 7.3idi with the e4od transmission!

    Hey all I am still trying to trace an electrical issue in my truck but I don't know what to do next without a wiring diagram. I cannot find one on the interwebs anywhere. I need to confirm that the wire coming out of the load side of fuse 18 splices into two wires that run into the two...
  19. jonleroy2506

    tachometer not working electrical problem

    I already tried that, but it's not the sensor its a direct short to ground between the fuse and the tach
  20. jonleroy2506

    tachometer not working electrical problem

    Hey everyone, I recently asked a question about diagnosing an e4od/tachometer problem I have been having in my truck, and received many good pieces of advice and ideas, however sadly none of those ideas panned out. I have been digging some more and at this point have torn my dashboard to...
  21. jonleroy2506

    E4od not shifting and no tachometer... not sure what to try next

    I decided to just throw on a pair of coveralls and risk getting a little wet to pull that heat shield and connector and it was definitely a little oily. I cleaned it up as best as I could which truthfully probably wasnt really well but I couldn't get an air hose out to the truck and now ive got...
  22. jonleroy2506

    E4od not shifting and no tachometer... not sure what to try next

    Okay I managed to start the truck and check the fuse, which blew again but that served to remind me that none of my electronic gauges are working right now, which probably makes whether or not the tach sensor works obsolete. Some of the dash lights still work which would lead me to believe that...
  23. jonleroy2506

    E4od not shifting and no tachometer... not sure what to try next

    Okay I will have to try that selahdoor. Sadly I can't right now because Im charging the truck, as of a couple days ago it won't hold a charge for whatever reason. If the fuse doesn't blow with the tach sensor unplugged what will that tell me?
  24. jonleroy2506

    E4od not shifting and no tachometer... not sure what to try next

    Thank you for the quick reply. I just got down under the truck and in the brief time I was down there (there is a lot of snow on the ground here so i tried to stay out of it as much as possible) I found two connections to the transmission. One was just above where the shifting linkage attaches...
  25. jonleroy2506

    E4od not shifting and no tachometer... not sure what to try next

    Hey all, I am new to this forum, I have read a lot of posts but this is my first. I know that there are a lot of posts related to this issue, but I have read over a lot of them and I can't seem top find any that adress quite the same issue as I am having. I have been digging for several...
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