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Search results

  1. M

    Starter question on 6.5 diesel suburban - high pitch whirring 1-2 seconds after start

    Shims are needed only if the bendix goes in too far and rides against the ring gear--grinding sound when cranking. You did not say you had any noise so I suggest taking them out so you get full tooth engagement. I did mine today and it also winds down for 1-2 seconds, difference may just be...
  2. M

    Need rear brake and seal advice 1994 K3500 6.5 diesel This started because the emerg

    GM mech gave me bad info!! Sorry, guess I will go out and re do mine. Thanks. By 'next' I assume you mean next loose? Maybe closest??? Might be a good bit to next loosest depending on where nut is.
  3. M

    Dead pedal in low range

    Wiring is different on some and with or without mods, BUT, my sig had some of these problems. Very hard high RPM shift in 4 lo. Never did the dead pedal thing cause I didn't push it. ECM pin was not getting a solid signal, kind of jumping around. If ECM does not see 4 lo signal no tranny re...
  4. M

    Need rear brake and seal advice 1994 K3500 6.5 diesel This started because the emerg

    If you have the single nut, woodruff key and snap ring--bring the nut tight, loosen, tighten again then line up the slot with the next notch tighter. Slide in the woodruff key. Snap ring has one end bent, that should go inward against the key.
  5. M

    Starter question on 6.5 diesel suburban - high pitch whirring 1-2 seconds after start

    Try cranking it before GP's are hot so it won't start. Just a turn or so. Should stop cranking instantly when you release the key. If solenoid is not releasing contact it will continue to crank after you let go of the key. When the engine fires it slings the bendix gear back out of the...
  6. M

    Just got a new Suburban-looking for some suggestions

    Oh--membered a thing or two. Biggest thing that kills MPG, besides a heavy foot, is the coolant temp sensor for the ECM. It's not the same one for the gauge. There is a chart for what it should read with an ohm meter at a given temp and if you are getting poor mileage check it. It's the one...
  7. M

    Just got a new Suburban-looking for some suggestions

    Great find!!! You did say kilometers. My sig is virtually stock with slight upgrade in exhaust--3" down, 3 1/2 straight out ie no soot trap or muffler and is quieter than I thought it would be, still can't hear turbo itself. If turbo is NOT working you get black smoke, should only be a slight...
  8. M

    4L80E shift issue info to share

    Thanks Ferm, preventing over pressure is why I was looking at the Transgo kit. With 250k mine is prolly worn as it does hunt. Would need to pull the valve body anyway so I would also look for the repair kit.
  9. M

    4L80E shift issue info to share

    Apologies to War, I mis-understood. Ok, so the hunting is a worn valve with the AFL circuit trying to compensate??? So, question, can the valve be replace without pulling the trans? Does the Transgo HD-2 kit fix this??? Was thinking about just the SK kit but the HD has the dual feed...
  10. M

    4L80E shift issue info to share

    War, Do you pull at 50K often?? Here is the max numbers per GM for 93-9x Max gross weight shown for any model 10,334 (combined f/r) Max ball tow Combined truck and trailer 19,000 DRW Max 5th wheel weight 12,500 DRW, (standard hitch weight ratio) That's no where near 50k, no wonder your...
  11. M

    4L80E shift issue info to share

    That would be OK, except I would want TCC unlock long before kickdown. Same for OD. And no mid throttle hunt.
  12. M

    4L80E shift issue info to share

    OK-the issues first--Select first, you get first and second. Select second, you get first and second. Only thing that changes is the 1-2 shift point. Not all of you may think of this as an issue but I do. I learned along time ago that starting on snow or ice is often better done in second...
  13. M

    Code 78

    So, a 78 by itself is a boost tracking error, where 61 is hi vs 62 being low. Was really wondering if anyone had numbers for the error---like the ECM wants "X" but got "Y". My sig threw a 78 when I pulled out to pass and had to hold WOT to get around two rigs instead of one. Well over 90 when...
  14. M

    Code 78

    Does anyone know how much boost triggers the fault?? Is it just an over boost or is it a "difference" number compared to what the ECM thinks it should be?? I read somewhere that it triggers when the ECM tries to lower boost and that does not happen. Can anyone clarify how this works...
  15. M

    Dually conversion

    Looked up the TM, I stand corrected. I did notice something for the lift kit guys tho--wedge blocks that would rotate the axle for less U joint angle.
  16. M

    Dually conversion

    Yep, thats why I suggested it, just the PDF is part of the humvee manual, the rest is good info. I spent several hundred bucks before I found it. Got a set of the 3 1/2" drums, backing plates, hubs etc for a 3500 dually tho, I can't use em. Drums are matched first cut from NOS.
  17. M

    Dually conversion

    Guy is trying to get to a dually, the humvee rear might convert to duals but would prolly be pricey compared to one from a yard.
  18. M

    Dually conversion

    That's hummVee---not the same.
  19. M

    Dually conversion

    Go to pirate4x4, has version info on the 14 bolt ff.
  20. M

    Hx-40wii safe boost on stock compression

    Here are HP calcs; Required air flow in pounds per minute = BSFC times HP times air fuel ratio then divided by 60 BSFC is defined as pounds of fuel divided by horsepower per hour, typically 0.6 Required manifold pressure in pounds per square inch is calculated as: 460 + manifold...
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