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  1. Y

    Suburban original roof "rack" and roof tent

    I've never had good luck with roof racks - they always seem to leak. I am missing some floors out of a first year Jeep XJ because of that. My burb doesn't have any holes in the roof and I'm glad I found it that way, I'd be afraid to put my fat you-know-what up there anyway for fear of...
  2. Y

    What is supposed to go here on the HVAC blend box?

    I'd use the actual foil HVAC tape, not typical off-the-shelf "duct tape". The actual HVAC tape holds up much better over time.
  3. Y

    New Speedometer Question

    I know on the squares that use TBI, there is a speed sensor that relayed the vehicle speed to the computer. If your truck has a carb instead of a TBI, its a pretty good bet you won't need to worry about the speed sensor.
  4. Y

    My new HF welder

    Far from "thrown to the wolves" - thats a million times better than any of the work I've done with a MIG.....
  5. Y

    Let's talk one man brake bleeder

    I've never been able to get a solo bleed system to work - I can keep air from being drawn back in through the hose, but short of gooping up all around the bleeder threads theres no way to keep air from just getting sucked in past the threads. I spent DAYS trying to get the air out of hydraulic...
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    ALDL data logging

    Not looking to change anything (I figure Chevy probably knew what they were doing when they set it up) - mainly just wanting to know why it does what it does and when, so when it doesn't I am not floundering around. The 1000RPM+ idle when in neutral/park does worry me some just because dropping...
  7. Y

    Braking Me

    Contaminated shoes will definately grab badly and uncontrollably - I had that happen when an axle seal leaked on one of my British cars and also when a rear wheel cylinder failed on a Jeep at one point. They get kind of gummy and sticky (which seems counterintuitive if they get an oily substance...
  8. Y

    ALDL data logging

    I'll try to see if I can get to the PROM ID number sometime over the long weekend coming up (won't be at an internet-enabled location until Monday at that point though). I had it out once when I replaced the ECU (I was chasing phantoms at that point) and everything looked undisturbed when I...
  9. Y

    ALDL data logging

    I've got ADX files that say they are for the 1227747 computer. One of them was obviously not right because the reported coolant temp started at 300+ centigrade and came down as the engine warmed up...found and loaded a different file which seems to give mostly rational values. Apparently some...
  10. Y

    Is there posi in this?

    Easy test (and doesn't require opening the diff cover). Lift both rear wheels off the ground, put the trans in park or 1st, engine off. Turn 1 rear wheel - if opposite wheel turns the other direction, you have a basic open diff. If you cannot turn the wheel, put the trans in neutral and try...
  11. Y

    ALDL data logging

    OK here are the relevant (hopefully) screen caps that show the measured parameters and the toggled flags. There is a LEAN error flag set, the ECU triggered the SES light with a lean code a couple weeks ago, but it did not come back on during this 10-ish mile test trip. I am not sure I put...
  12. Y

    ALDL data logging

    Well not exactly. Without the resistor it will give me idle@750 when in gear (drive or reverse) but seems to not really assert any control when in park or neutral. With the resistor it wants to idle@1000 under any circmstance. I'm using TunerPro RT - I have the laptop containing the log files...
  13. Y

    ALDL data logging

    Having had some more time to fiddle with and capture some data with this thing; I have now run into a couple things I do not understand: 1 - The 10K resistor does not do what I expected: It does "something", but I can't figure out what. Suggestions from folks on here indicated that the 10K...
  14. Y

    Intermittent High Idle and Occasional Hesitation on Acceleration

    I did change the coolant temp sensor last year sometime thinking that could be the issue (that was before I got the ALDL cable so I had no real data to go on at the time) - I doubt my old one was defective since nothing changed and the ECU is getting proper CTS readings. There certainly is some...
  15. Y

    ALDL data logging

    I'm using TunerPro RT because I was told getting WinALDL to work on Win10 was hit or miss. If you have the Moates cable you need to use the FTDI driver for it. I've monitored and logged the data stream on 10-15 minute drives and the TPS doesn't seem to have any odd or stray jumps. With pedal...
  16. Y

    Intermittent High Idle and Occasional Hesitation on Acceleration

    I don't have any way to burn a chip - and I'd probably want to find a way to read my existing chip first to confirm what it has programmed before going thru all that to find out it wasn't the case. I don't think its a vacuum leak or faulty IAC because when I do the procedure to reset the IAC...
  17. Y

    Speedometer Reads Fast

    Mine reads around +5 at highway speeds (indicated 70=65 actual for example), which is about an 8-12% error rate. However, at the suggestion of folks here on this forum I checked the odometer accuracy, and it is only 2.3% off which could be easily explained by tire size. I thought perhaps the...
  18. Y

    Intermittent High Idle and Occasional Hesitation on Acceleration

    Tunerpro RT can also show you the flags as well as the data stream, as long as you have the right ADS or ADX file. On mine I can see when the gear select goes from PARK-NEUTRAL to DRIVE (I don't think it knows which gear you are in, just that you are in a gear). It also shows when I'm in open...
  19. Y

    ALDL data logging

    Most of the sensors will probably be the same for the 454 TBI (which is what I have) but they will likely be in different places making the wiring become more than a direct swap. The other, larger issue is the computer and its programming. The same physical computer is listed as being for all...
  20. Y

    ALDL data logging

    I've only had the cable/software working for a day so far so I'm sure theres a long learning curve ahead, but you already gave me some good clues. My IAC while driving was up around 145, and seems to immediately jump between 90-something to 140-something in unison with using the throttle. When...
  21. Y

    Hydro boost brakes sometimes get very tight

    I am glad I stumbled into this topic! I have a friend with a P30 based motorhome that is having pretty much the same kind of hydroboost problem (and no way to revert to vacuum in the space available). He has had the system worked on multiple times with parts replaced, no leaks but the problem...
  22. Y

    ALDL data logging

    Plugs, rotor wires and cap are all less than a year old. Didn't think of a misfire being the cause of a lean spike, but now that you explain the logic it makes sense. Was playing with it well after dark last night trying to get the hang of the software and adjusting the TPS - didn't see any...
  23. Y

    ALDL data logging

    Is a slight varience (like 124 to 132) an acceptable range? I did see it go up significantly (like 145ish) for just a second and that -as expected- did trigger the SES light for a minute or 2 before it went back off. Unfortunately that was before I had the data logging figured out so I didn't...
  24. Y

    ALDL data logging

    Yes I did - and was even able to take the whole setup for a litlle trip thru the side roads last night. Then realized I had no idea how to actually log data with the software, spent a good 30 minutes sitting in the driveway fiddling with it and then took ANOTHER little ride down the side roads...
  25. Y

    ALDL data logging

    I remember finding a couple for sale around that price (and in truth might have been tempted had the Moates alternative not been available), but it was never clear whether the seller had all the correct cables and software cartridges. I would have been highly angry to spend that much only to...

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