Recent content by ralmo94

  1. ralmo94

    1990 4.3 TBI crazy high idle

    What diagnostic tools do you have available? Are you able to look at aldl data? How does it idle with the TPS unplugged? Possibly a bad wire going to the TPS? Should be a reference 5vlt reference ground, and signal between 0 and 5vlts based on throttle positions. 5vlt full throttle.
  2. ralmo94

    Service codes 32 and 35/temperature gauge not working

    Temp sender for gauge is separate from the one the ECU uses. Gauge sender should be on the head on the driver's side. For your codes I would start by looking at your egr vacuum line, then check out your egr.
  3. ralmo94

    The Stupid Electronics Questions Thread

    I guess by your screen name you have a 96? If so, it could possibly be the hazArd switch, when mine was bad it did all sorts of things like that.
  4. ralmo94

    In need of a 02 express van 5.0 and 4l60e 2wd stock file

    Had no idea about the cat and o2 difference, almost sounds like a Cali vs Fed emissions deal. Never really looked at a 305, I always assumed it was setup the same as the 350. Hp not making it available to change those parameters doesn't surprise me
  5. ralmo94

    5.7 v8 rough idle, hesitation and shudders in reverse and drive only

    I usually start with a good thorough visual inspection of all vacuum lines and connectors. p0102 is Mass airflow sensor low, could be signal dropping off from it. Is there an oiled air filter? common issue is over oiling them and the oil contaminants the MAF. you can get a can of mass...
  6. ralmo94

    In need of a 02 express van 5.0 and 4l60e 2wd stock file

    Have you tried the repository on HP tuners website? There are .bin files available at gearhead-efi.com, but you won't be able to use HP to load them. You should be able to make a 5.7 file work fairly easy, IMHO all you would need to change is the displacement, as long as the 5.7 and 5.0use...
  7. ralmo94

    The Official Vortec 454 Info thread

    Mine did just fine in od with 18k gross ( counting truck ) data logs showed normal tranny temps. Converter locked doesn't heat ATF up that much, unlocked torque manipulation does. With 3.73 and small tires I couldn't imagine driving over 65 in 3rd for sustained periods, with 265 tires, that's...
  8. ralmo94

    The Official Vortec 454 Info thread

    For what it's worth, the calibration engineer I had correspondence with told me that at the proving grounds the 4l80e could handle locked up tc in OD pulling 18k up a grade, all the other autos I know of all say to tow with od off, 4l60 included. IMHO as long as you have enough power to pull...
  9. ralmo94

    The Official Vortec 454 Info thread

    I guess kinda back on track, lol, mine seems to do best between 2200-2400
  10. ralmo94

    The Official Vortec 454 Info thread

    Here is 4.10 245/75-16 vs 3.73 225/75-16 Looks like you are still a little lower than me about 4 or 5 mph at cruising rpm. I couldn't imagine towing in 3rd unless I couldn't maintain speed in 4th. You might get better mpg in 4th.
  11. ralmo94

    The Official Vortec 454 Info thread

    3k is fine as long as you have good oil. Lots of opinions on that, but I had a GM calibration engineer tell me that the best thing to run in these is 10w30, and that aligns with what my own research is. That's what I personally run, and I don't change my oil on intervals, I check my oil...
  12. ralmo94

    The Official Vortec 454 Info thread

    4.10 vs 4.56 265/75-16
  13. ralmo94

    The Official Vortec 454 Info thread

    Here is 4.10 vs 5.13 on 265/75-16
  14. ralmo94

    The Official Vortec 454 Info thread

    Here is a compare of 265/75-16 4.10s vs 225/75-16 4.10s
  15. ralmo94

    The Official Vortec 454 Info thread

    Towing in OD won't hurt the 4l80. It's made for it. It even has a lower OD ratio than the 60e. What is hard on them is slow shifts in second gear for creature comfort, and pulling a long grade with torque converter unlocked, both can be solved with programming. What size tires you run...
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