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  1. DHud

    98 K1500 motor swap but no start

    That's helpful @Schurkey - I'll check the battery threads to make sure I don't have that problem again - and maybe even switch over to your design... Thanks!
  2. DHud

    98 K1500 motor swap but no start

    UPDATE: Good News Guys - She's Running! And, as most of you have already experienced in your years of wrenching, it was a stupid little thing. The Battery's Negative Terminal Bolt. As you can see in the attached picture, I heeded @Schurkey in post #9 way back when and cleaned the snot out...
  3. DHud

    98 K1500 motor swap but no start

    Hey all! Back from our weekend away and had a chance to do some tinkering on the truck last night: UPDATE: - Good news: I was able to get the starter to engage while installed in the truck by jumping it straight from the battery with Jumper Cables - I then started narrowing down the possible...
  4. DHud

    98 K1500 motor swap but no start

    Unfortunately I'm not going to be able to give an update until next week bcs we're heading out of town for a wedding/mini-vaca tomorrow.... I was hoping to tinker with the truck before we left but another car in the family fleet needed emergency attention! Battery passed the Load Test - so...
  5. DHud

    98 K1500 motor swap but no start

    AMEN to that!! Follow Up Question to your thoughts about marrying the old starter to a new flywheel. When connecting the flywheel of the newly installed motor to the torque converter of the original transmission, do you need to be mindful of which holes of each line up with each other? If so...
  6. DHud

    98 K1500 motor swap but no start

    Makes total sense - I’m impressed at how well you explain complex things - you should be a shop teacher! *Flexplate is from new motor - automatic *Starter is original from the old motor, new pairing with this engine *Starter sounded normal/strong/no hesitation - no shims installed with original...
  7. DHud

    98 K1500 motor swap but no start

    @Caman96 , I have a question for you too: I repainted the bracket that holds the wire harness on the back side of the engine - the ground bolt attaches through this bracket (see image and the red arrow I added to show what I mean). Would painting this surface compromise the ground or is the...
  8. DHud

    98 K1500 motor swap but no start

    That's good stuff, @Road Trip - thanks for the deep dive into the starter mechanics. I appreciate understanding how things work bcs it helps to troubleshoot problems. I plan to get the battery load tested tomorrow. I have done as much inspecting as I can on the Power Lead from the battery to...
  9. DHud

    98 K1500 motor swap but no start

    I had a little time to work on the truck during the little guys’ nap time! Update: Pulled the starter and did a bench test myself - got it to engage with no problems using jumper cables and a battery. (Bummer - I was hoping this would be the obvious problem) Reinstalled the starter and tried...
  10. DHud

    98 K1500 motor swap but no start

    Good logic - I’ll pull both the starter and battery and do some testing to make sure the battery is good, not just new, and the starter responds as it should. I’m praying the starter is shot - that seems to be the easiest solution at this point in the process. Have an excellent Father’s Day...
  11. DHud

    98 K1500 motor swap but no start

    I like this thinking - but how do I test for voltage drop on these lines if I can’t get the starter to engage before everything dies? The “Ping - dead” result is immediate…
  12. DHud

    98 K1500 motor swap but no start

    Thanks everyone for your contribution to the troubleshooting process. You guys are amazing! @Road Trip here is the update per your protocol in post 46: 1) Recharged the battery back to 100% - CHECK 2) Removed all 8 spark plugs while waiting on the charger to finish - CHECK 3) Remove 12v...
  13. DHud

    98 K1500 motor swap but no start

    It’s a brand new battery bcs that was part of the original problem… thanks
  14. DHud

    98 K1500 motor swap but no start

    My ‘98 doesn’t have it either. I did extensive videotaping during the removal of the motor and my footage shows only those 2 grounds - not a 3rd (#7 in diagram). Update: spark plugs are out and engine turns free and smooth by hand. Interesting insight - after I got “ping and dead” the last...
  15. DHud

    98 K1500 motor swap but no start

    Thank you! That answers my question - which means all my grounds are clean and correct and so are my power leads off the battery…
  16. DHud

    98 K1500 motor swap but no start

    Thanks @Caman96 for helping. The question I’m wondering is about that 3rd ground wire that appears as #7 in the diagram from post #54 above. I don’t believe I have a second braided wire coming from above. The only ones I have look like the picture of your engine - 2 grounds to that bolt. Is...
  17. DHud

    98 K1500 motor swap but no start

    This is really helpful in the Big Picture of troubleshooting things like this. All grounds are shiny and tight and connected per the diagrams above on both the front of the engine and the rear - and so are all power leads coming from battery. I rechecked all of that the other day. But I do...
  18. DHud

    98 K1500 motor swap but no start

    Love it. I got it from my dad who did the same with me. Attached is a pic of us pulling a motor out of a 71 Cougar he had... pic was taken shortly before he passed. He was my "over the shoulder" guy for stuff like this!
  19. DHud

    98 K1500 motor swap but no start

    Sorry for the delay in getting back to you all...while I'm trying to get this truck running, we are also fostering twin 2yr old boys!!! Quite a juggling act these days at our house. I will go back and run through the protocol as best as I can manage it and let you know what I find out. Won't...
  20. DHud

    98 K1500 motor swap but no start

    I appreciate the tutorial! No judgment felt on my part - I'm new to this level of mechanics and am I'm happy to be a sponge for the collective wisdom of others like you. To answer your question, "which way did you disable the Ignition system in order to accomplish the engine prelube effort?"...
  21. DHud

    98 K1500 motor swap but no start

    The Crank Position Sensor is the original one from my truck with the original motor.
  22. DHud

    98 K1500 motor swap but no start

    Yes I can turn the engine by hand. I did have voltage to underwood fuse block, but now I don't anymore. It looks like the Aux B 30a fuse is blown. It was not before...
  23. DHud

    98 K1500 motor swap but no start

    Crank was strong - no issues or fading... And yes, I heard motor run before it was pulled. Motor was stored in dry place for about 6 months before install. All I did was replace Oil Pan and Valve Cover gaskets, new spark plugs/wires, thermostat, and installed new Power Steering Pump and Water...
  24. DHud

    98 K1500 motor swap but no start

    A1: No history of issues with Starter - truck started fine every time with old motor - no hesitation. Reinstalled same starter with new motor assuming it would be fine. Starter looks pretty worn, but when taken out, it operated as expected. A2: The only behavior change since the beginning are...
  25. DHud

    98 K1500 motor swap but no start

    Update: since the last “fail test” earlier today, the power is not returning as in all previous times. Truck is still without power over an hour later. It was taking 3-5 mins to restore all other times, but now it’s dead as a doornail!

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