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  1. tekrsq

    Transfer Case Shift Motor Relays ??

    I can't believe there have been 0 responses. Well anyway, about a week or so after posting this, I started the truck, and the shift motor disengeged, and it came out of 4wd. When checking it again, I would hear a lot of clicking under the dash for about 3-5 seconds, then it would engage 4wd...
  2. tekrsq

    Transfer Case Shift Motor Relays ??

    99 EB, 5.4...............Where exactly are the 4x4 shift motor relays at under the dash ?? Almost right on schedule, my 4x4 stopped working about 3yrs after replacing the shift motor. So I replaced it again, but now when I selected 4Hi, I hear a lot of clicking under the dash (which is new)...
  3. tekrsq

    My first expedition. 98 Commercial 5.4L

    I second changing out the fuel filter. Also, what is hanging down behind your grill on the passenger side ?
  4. tekrsq

    Sun Load/ Auto Headlight dash sensor

    Anyway, like so many people with this age of vehicle, many parts are no longer made. I need to know if anybody has either bypassed this dual sensor altogether, or found some aftermarket parts that can be adopted to work. Basically, my auto headlights do not work (which is not a big deal for me)...
  5. tekrsq

    Understanding SFT's

    I guess I should mention that the fuel pressure regulator, fuel filter and pump are about 10, 000 miles old, the COPs and plugs about 30,000, and the injectors are about less than 10,000 along with a reman engine. It runs great, except when it suddenly starts losing power.
  6. tekrsq

    Understanding SFT's

    I have a 5 Star Tuning SCT X4 on my 99 5.4L. Normally, my STFT's stay between 0.95- 1.10 depending on temp and speed. Yesterday while at about 75mph (2100 ish rpm) it suddenly had episodes of losing power for a brief second, then pick up normal again. When it would do this,my STFT on both...
  7. tekrsq

    Im just trying to understand

    I have been told by multiple people that the GEM's need to be programmed to your truck. Not sure what happens if it isn't, but your issue sounds like it could be a ground related issue.
  8. tekrsq

    Reman Engine Resources

    33 hrs for R/R ??? I just had my 99's 5.4 replaced last year and the shop quoted me 21hrs for R/R. That 12hr difference would have been close to an additional $2,000 in labor for me. WOW.
  9. tekrsq

    Diagnosing overheating from 200 miles away

    Oh, this brings back memories. My 99 EB 5.4 overheated about 3 yrs ago....with about 180,000 on it. After replacing the t-stat, radiator, and a coolant flush, it was still running warm. When I pulled the water pump, I discovered ALL of the fins were completely gone. They had rusted off...
  10. tekrsq

    Oil cooler

    Typically, on these engines, when the oil and coolant are mixing (and you're sure you don't have a cracked head), then it's usually the gasket between the oil filter housing and the block. I had to change mine on my 99 right after I bought it. It wasn't fun, but it's not the worst job I've...
  11. tekrsq

    cigarette lighter power

    Short answer is it's not easy. You basically have to unplug the port from the factory wiring, then install a separate, key activated circuit and connect it to the port. I had this same issue with my 99 when I was trying to install a dash cam. I ended up just buying an install kit for the dash...
  12. tekrsq

    Getting to the GEM

    About 2 yrs ago, I had an electrical gremlin on my 1st gen that I looked for almost 3 months. I weas convinced the GEM was bad, and was even confirmed by a Firestone station. However, the Firestone would not replace the GEM because it had to be programmed by the dealer. When I took my truck to...
  13. tekrsq

    Oil cooler

    What makes you think you need to replace the oil cooler ?
  14. tekrsq

    Intermittent electrical issues

    About 2 yrs ago, I had an electrical gremlin on my 1st gen that I looked for almost 3 months. I weas convinced the GEM was bad, and was even confirmed by a Firestone station. However, the Firestone would not replace the GEM because it had to be programmed by the dealer. When I took my truck...
  15. tekrsq

    Light Sensor Amplifier

    Um..yeah....been doing that, but they don't work. So I need to know exactly how to test those sensors with a DVMM.
  16. tekrsq

    Light Sensor Amplifier

    Does anybody know how to test the light sensor amplifier...and actually the light sensor itself also, on my 99 EB ? I'm still trying to get my auto headlight feature to work, and I have narrowed down the issue to those 2 things, but I can't figure out how to test them.. Apparently neither are...
  17. tekrsq

    99 EB 5.4 intermittent shut down issues

    I thought I updated this thread as SOLVED. I ended up finding a new PCM diode and PCM relay and replaced them both. I have not had the issue since replacing them.
  18. tekrsq

    No crank, no start, 99 EB 5.4

    Is your odometer reading normal, or ---------------- ? My 99 EB was doing the exact same thing, and the odometer had the dashes. Tried a TON of things, but it ended up being either the PCM relay, or the PCM fuse. I don't know which one because I replaced them both at the same time. I forget...
  19. tekrsq

    1998 Eddie Bauer with codes...Where do I start??

    Did you ever figure out the issue ??
  20. tekrsq

    99 Mach stereo subwoofer is 4 ohm

    I saw that, but wasn't looking to go that deep....if I didn't have to. All I needed was the sub. I pulled the CD changer and switched out the head unit almost 10 yrs ago.
  21. tekrsq

    99 Mach stereo subwoofer is 4 ohm

    I can't believe that after all these years nobody has posted (that I could find) exactly what the rating for the stock 1st gen Mach stereo subwoofer amplifier is rated for. For many years I just didn't care that the stock subwoofer was blown, but I finally decided to replace it and see what...
  22. tekrsq

    Not wanting it to be a head gasket

    Plugs and COP's will cause a misfire, but so will bad injectors. They're electrical devices too, and can fail, not to mention the normal carbon buildup. The plugs and COP's have about 15,000 miles on them. I've ran injector cleaner through it multiple times over the years, but apparently...
  23. tekrsq

    Not wanting it to be a head gasket

    New engine is in, and almost 500 miles put on it. I initially had an issue with the brand new engine running "warm"....in the area of 210-215F on an 85F day, running at 70-75 mph. After watching my gauges for about a week, I was hoping the issue was a faulty thermostat....even though it was...
  24. tekrsq

    Radiator Replacement Question

    Ok, here's the deal. My engine was just replace with a new 5.4 reman. It's having little "Mickey Mouse" issues with it that are getting tweaked. The one that bothers me though, it runs 200-205+ F at highway speeds, on a 85-90 degree day. My old engine ran 193-200 all day.....rarely over 200...
  25. tekrsq

    99 4r100 Bypass Kit ??

    Just had my transmission cooler lines replaced (including the bypass line) and now the trans is overheating. So I assume the baypass vavle isn't working. However, I cannot find a bypass delete kit specifically for my 99 EB 5.4, 4R100. All I have found have been for the 7.3 engines with the...

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